FP, DFB and VCSEL are three common semiconductor laser architectures, but they control optical feedback in different ways. FP and DFB devices are commonly edge-emitting lasers: FP lasers use a facet-defined Fabry–Pérot cavity, while DFB lasers add a wavelength-selective grating to control longitudinal modes. A VCSEL uses a short vertical cavity between distributed Bragg reflector mirrors and emits perpendicular to the wafer surface.
That architectural difference affects much more than the drawing of the chip. It changes spectral behavior, emission direction, beam shape, array capability, manufacturing approach, packaging choices and the applications where each device makes the most engineering sense.
A practical first approximation is:
- Choose DFB when a narrow, predictable wavelength is central to system performance.
- Choose VCSEL when surface emission, compact arrays, fast short-reach links or active 3D sensing are central to the design.
- Choose FP when a cost-effective edge-emitting source can meet the optical requirements without the additional spectral control of a DFB device.
There is no universally “best” laser diode type.
The correct architecture depends on what the optical system must control: wavelength, linewidth, power, beam, modulation, package, temperature, fiber interface or total system cost.
If you are new to semiconductor lasers, start with What Is a Laser Diode? How Semiconductor Laser Diodes Work. This guide focuses on how to choose between FP, DFB and VCSEL architectures.
DFB vs FP vs VCSEL at a Glance
The following comparison is a useful starting point before looking at individual datasheets.
| Feature | FP Laser Diode | DFB Laser Diode | VCSEL |
|---|---|---|---|
| Full name | Fabry–Pérot laser diode | Distributed feedback laser diode | Vertical-cavity surface-emitting laser |
| Typical cavity | In-plane facet cavity | In-plane cavity with wavelength-selective grating | Vertical cavity between DBR mirrors |
| Typical emission direction | Edge | Edge | Surface |
| Longitudinal modes | Commonly multiple | Usually one dominant mode | Device-dependent |
| Optical spectrum | Relatively broader | Narrow and strongly mode-selected | Device-dependent; single- or multimode designs exist |
| Wavelength control | Moderate | Strong | Application- and design-dependent |
| Beam geometry | Typically asymmetric / elliptical | Typically asymmetric / elliptical | Often more rotationally symmetric |
| 2D array integration | Difficult | Difficult | Strong advantage |
| Power scaling | Strong single-emitter options available | Optimized more for spectral control in many designs | Single emitter + scalable array options |
| High-speed modulation | Possible | Strong in telecom designs | Strong advantage in many short-reach designs |
| Common applications | General optical sources, pumping, broad-tolerance systems | TDLAS, spectroscopy, wavelength-defined telecom | Datacom, ToF, 3D sensing, proximity sensing |
| Main selection reason | Simplicity and cost-performance balance | Spectral precision | Surface emission and array scalability |
This table should not be interpreted as an absolute specification sheet.
A high-performance FP device can outperform a poorly matched DFB in the wrong application, and a VCSEL optimized for datacom is not automatically suitable for a ToF illumination system.
The architecture gives you the design direction. The actual part still has to be qualified against the system requirements.
Three Semiconductor Laser Architectures
The most important difference between FP, DFB and VCSEL begins inside the optical resonator.
FP Laser Diode: Facet-to-Facet Optical Cavity
A Fabry–Pérot laser diode commonly uses two parallel chip facets to form the optical resonator.
Light travels along the active region between these facets. One side provides strong reflection while the output side allows part of the resonant light to escape.
Because several longitudinal cavity modes may satisfy the resonance condition within the gain spectrum, an FP laser often produces multiple spectral peaks.
This architecture is attractive when:
- The application does not require tight wavelength control
- Broader spectral output is acceptable
- Output power and cost matter more than single-mode behavior
- A straightforward edge-emitting source is preferred
- The OEM wants a mature architecture with flexible packaging options
FP lasers remain useful precisely because many optical systems do not benefit from paying for additional wavelength-selective structures.
A source is not “better” because it has the narrowest spectrum. It is better when its spectrum is appropriate for the system.
DFB Laser Diode: Wavelength-Selective Distributed Feedback
A distributed feedback laser diode adds a periodic grating within or close to the optical waveguide.
That grating provides wavelength-selective feedback along the cavity instead of relying only on reflections at the chip ends.
The result is strong selection of the intended longitudinal mode.
In practical OEM terms, this makes DFB lasers a strong fit when the system depends on:
- A narrow spectral output
- High side-mode suppression
- Stable wavelength targeting
- Controlled current tuning
- Controlled temperature tuning
- Fiber-optic wavelength channels
- Molecular absorption-line matching
These characteristics are why DFB architecture is widely used in TDLAS, spectroscopy and wavelength-defined optical communication.
Lumi already has a detailed two-way comparison covering this topic. For deeper spectral, thermal and OEM guidance, see DFB Laser Diode vs FP Laser Diode: OEM Selection Guide.
VCSEL: Vertical Cavity Between DBR Mirrors
A VCSEL uses a fundamentally different cavity orientation.
Instead of sending the optical field along the wafer plane, the resonator is oriented vertically.
A typical VCSEL uses:
- A top distributed Bragg reflector
- An active region, often with quantum wells
- A bottom distributed Bragg reflector
- A current-confinement aperture
- Surface-normal laser output
This structure allows light to leave through the wafer surface.
That creates several practical advantages:
- Compact emitting aperture
- Convenient wafer-level testing
- More symmetric beam geometry in many designs
- Easy formation of dense 2D emitter arrays
- Strong fit for short-reach datacom and active sensing
For a detailed explanation of DBR mirrors, single emitters, arrays and 850/940 nm applications, see What Is a VCSEL?.
The Fundamental Difference Is the Optical Cavity
A useful way to organize the three architectures is to ask:
Where does the optical field travel, and how is the correct mode reinforced?
FP
The optical field travels along the wafer plane.
Feedback comes primarily from the two opposing cavity facets.
DFB
The optical field also travels along the wafer plane.
A periodic grating provides distributed, wavelength-selective feedback.
VCSEL
The optical field travels perpendicular to the wafer.
Top and bottom Bragg mirrors form a very short vertical cavity.
This leads to an important engineering distinction:
Comparing DFB and FP is mainly a comparison of how an edge-emitting laser controls its longitudinal modes. Comparing VCSEL with either of them also introduces a fundamentally different cavity orientation and emission geometry.
That distinction is why a three-way comparison should not be reduced to a simple “good / better / best” ranking.
Edge-Emitting vs Surface-Emitting Laser Diodes
FP and DFB are commonly classified as edge-emitting laser diodes, while VCSEL is a surface-emitting architecture.
FP and DFB: Edge Emission
In a typical FP or DFB laser diode:
- The optical cavity runs along the wafer plane
- Light exits through a chip edge
- The emitting region is narrow in one dimension
- Fast-axis and slow-axis divergence can differ substantially
This often creates an elliptical far-field beam.
The optical system may therefore require:
- Fast-axis collimation
- Slow-axis correction
- Aspheric lenses
- Fiber coupling optics
- Precision alignment
VCSEL: Surface Emission
In a VCSEL:
- The cavity is vertical
- The beam leaves the wafer surface
- The emitting aperture can be defined lithographically
- The far field is often more rotationally symmetric than an edge emitter
This can simplify integration with:
- Microlenses
- Diffusers
- Multimode fibers
- Diffractive optical elements
- Wafer-level optics
It also makes 2D arrays far easier to fabricate because many emitters can be patterned across the wafer surface without each one needing an exposed emitting edge.
How Their Optical Spectra Differ
Spectral behavior is often the first reason an engineer moves from FP to DFB, but VCSEL requires a more nuanced comparison.
FP: Multiple Longitudinal Modes Are Common
A Fabry–Pérot cavity supports a series of resonant longitudinal modes.
If several of those modes fall within the semiconductor gain bandwidth, the output spectrum may show multiple peaks.
The exact spectrum depends on:
- Cavity length
- Temperature
- Drive current
- Gain profile
- Optical feedback
- Package and thermal conditions
This is not automatically a disadvantage.
For a general optical source, pumping application or broad-tolerance sensing system, the broader spectral behavior may be fully acceptable.
DFB: Strong Single-Mode Selection
The DFB grating provides selective feedback near the intended Bragg wavelength.
That suppresses competing longitudinal modes and allows a single dominant peak to carry most of the optical power.
Important DFB specifications can include:
- Center wavelength
- Wavelength tolerance
- Spectral linewidth
- Side-mode suppression ratio
- Current tuning coefficient
- Temperature tuning coefficient
- Mode-hop-free range
For gas sensing and spectroscopy, these parameters can matter more than maximum optical power.
VCSEL: The Spectrum Is Device-Dependent
A common mistake is to place VCSEL somewhere between FP and DFB and assign it one fixed spectrum.
That is too simplistic.
A VCSEL’s output can depend strongly on:
- Aperture size
- Transverse-mode design
- Cavity geometry
- Drive current
- Temperature
- Single-emitter vs array construction
Single-mode VCSELs exist, and multimode VCSELs also exist.
The correct approach is:
Treat VCSEL spectral behavior as device-specific and evaluate the actual mode and linewidth requirements of the application.
Which Has the Narrowest Spectrum?
If the central requirement is a narrow, predictable wavelength for precision optical measurement, a DFB laser is generally the most natural starting point among these three architectures.
This is especially true for:
- TDLAS
- Molecular spectroscopy
- Wavelength-selective fiber systems
- Optical filters with narrow passbands
- Precision sensing
However, the architecture alone is still not enough.
A DFB specification should be evaluated together with:
- Package temperature
- TEC strategy
- Drive current
- Fiber coupling
- Optical feedback
- Aging and wavelength drift
Narrow spectral behavior is a system requirement, not just a chip label.
Beam Shape and Optical Integration
The beam coming directly from the semiconductor chip affects how much work the optical system must do.
FP and DFB Beam Characteristics
Edge-emitting devices commonly show very different divergence along the fast and slow axes.
This can lead to:
- Elliptical beam shape
- High fast-axis divergence
- More demanding collimation
- Sensitive fiber coupling
The package can partially solve these issues by adding lenses or factory-aligned fiber.
VCSEL Beam Characteristics
VCSELs often produce a beam that is easier to match to rotationally symmetric optics.
This can benefit:
- Compact lenses
- Proximity sensors
- Multimode-fiber links
- Array illumination
- 3D sensing
But “VCSEL = circular Gaussian beam” is not a universal rule.
Large-aperture, multimode and array VCSELs can have far-field profiles very different from a small single-mode device.
Always check the actual:
- Divergence
- Beam profile
- Near field
- Far field
- Emitter aperture
- Array geometry
Output Power and Power Scaling
The question “Which architecture has the most power?” is often poorly framed.
The useful comparison depends on whether you mean:
- Power from one emitter
- Peak pulsed power
- Continuous-wave power
- Power after fiber coupling
- Total power from an array
FP Laser Diodes
FP architecture spans a broad range of optical powers.
It can be attractive when a system needs practical edge-emitting optical power without strict spectral control.
DFB Laser Diodes
DFB products are often selected for spectral precision rather than simply maximizing output power.
That does not mean DFB devices are low power.
It means the value of the architecture is commonly tied to wavelength control per unit of usable optical power.
VCSELs
A single VCSEL emitter often provides modest power compared with some edge-emitting devices.
However, VCSEL arrays change the scaling model.
Many emitters can be fabricated on one chip, allowing total optical output to scale through:
- Larger arrays
- More emitters
- Pulsed operation
- Parallel electrical drive
This is why “VCSEL = low power” is an incomplete statement.
The correct distinction is:
Single-emitter output and total array output are different design quantities.
Modulation Speed
All three architectures can support direct modulation, but their strongest application spaces differ.
FP
FP devices can be directly modulated and used in optical links where the spectral and reach requirements are not especially demanding.
DFB
DFB lasers are widely used in telecom systems where a controlled optical wavelength and high-speed modulation must coexist.
VCSEL
VCSEL technology has a particularly strong position in high-speed short-reach datacom because of its small active volume, electrical characteristics and compatibility with multimode-fiber links.
Lumi’s 850nm 1206 SMD VCSEL – 1206ULM850-L provides a minimum 3 GHz modulation bandwidth at 6 mA in a compact 1206 SMD package, illustrating how VCSEL technology can combine PCB-level integration with high-speed optical performance.
The correct conclusion is therefore not:
VCSEL > DFB > FP
for modulation speed.
Instead:
Evaluate modulation together with wavelength, driver, fiber, package, temperature and link architecture.
Temperature and Wavelength Stability
All semiconductor lasers are temperature-sensitive.
Changes in junction temperature can affect:
- Threshold current
- Output power
- Efficiency
- Center wavelength
- Mode behavior
- Lifetime
FP Temperature Behavior
As temperature changes, FP longitudinal modes can shift and redistribute.
This may be acceptable when the downstream system has broad spectral tolerance.
DFB Temperature Behavior
DFB wavelength also shifts with temperature, but the architecture provides stronger longitudinal-mode control.
For TDLAS and wavelength-defined communication, the package may therefore include:
- TEC
- Thermistor
- Monitor photodiode
- Controlled heat sinking
The system can then intentionally tune or stabilize the wavelength.
VCSEL Temperature Behavior
VCSEL wavelength, threshold and output power also vary with temperature.
For an array, thermal uniformity becomes particularly important because emitter-to-emitter temperature differences can affect optical uniformity and efficiency.
No architecture eliminates thermal design.
The right question is how much temperature variation the application can tolerate and how much control the package provides.
Manufacturing and Cost Differences
A simple statement such as “FP is cheap, DFB is expensive, VCSEL is mass production” hides too much engineering detail.
FP Manufacturing
The basic FP cavity can be structurally simpler because it does not require a wavelength-selective grating.
This can make it attractive for applications where additional spectral control adds little system value.
DFB Manufacturing
DFB adds grating fabrication and tighter wavelength-related process control.
The additional device complexity is justified when narrow-mode behavior eliminates larger system problems such as:
- Measurement uncertainty
- Filter mismatch
- Channel drift
- Excess calibration
VCSEL Manufacturing
VCSEL fabrication requires complex vertical mirror structures, but the surface-emitting geometry offers important production advantages:
- Wafer-level optical testing
- Dense 2D emitter arrays
- Repeated lithographic structures
- High-volume semiconductor processing
Therefore the correct cost comparison depends on:
- Die size
- Process maturity
- Package
- Test requirements
- Volume
- Yield
- Fiber or optics integration
- Total system BOM
The cheapest laser chip does not automatically produce the lowest-cost optical system.
Laser Architecture Is Not Package Type
One of the most important concepts in laser diode selection is to separate architecture from package.
Architecture Describes How the Laser Cavity Works
Examples:
- FP
- DFB
- VCSEL
Package Describes How the Device Is Integrated
Examples:
- Bare chip
- TO package
- Butterfly
- SMD
- Fiber-coupled assembly
A DFB laser chip can be packaged in a TO-can, butterfly or fiber-pigtailed package.
An FP laser can also be supplied as a bare chip or TO-packaged device.
VCSELs are frequently supplied as bare chips, SMD devices or array packages.
This distinction is important because the package can add:
- Mechanical protection
- Heat spreading
- TEC
- Thermistor
- Monitor photodiode
- Lens
- Fiber
- Connector
- Electrical interface
For a deeper discussion of where chip responsibility ends and packaging begins, see Laser Diode Chip vs Packaged Laser Diode.
DFB, FP and VCSEL Application Matrix
Different architectures become valuable for different reasons.
| Application | FP | DFB | VCSEL |
|---|---|---|---|
| TDLAS gas sensing | Possible in limited architectures | Strong fit | Application-dependent |
| Precision spectroscopy | Possible | Strong fit | Application-dependent |
| Wavelength-defined telecom | Application-dependent | Strong fit | Application-dependent |
| Short-reach multimode datacom | Application-dependent | Possible | Strong fit |
| Time-of-flight sensing | Possible | Application-dependent | Strong fit |
| 3D sensing / proximity | Possible | Usually not first choice | Strong fit |
| General optical source | Strong fit | Possible | Possible |
| High-density emitter arrays | Poor fit | Poor fit | Strong fit |
| Broad-tolerance cost-sensitive system | Strong fit | Often unnecessary | Application-dependent |
The matrix is a selection aid, not a replacement for device-level engineering.
A particular product may be optimized outside its architecture’s most common application space.
Best Laser Type for TDLAS Gas Sensing
For most near-infrared TDLAS systems, DFB is the natural starting architecture.
TDLAS depends on measuring the absorption of a gas at a defined spectral feature.
The laser may need to scan across that feature by changing:
- Injection current
- Temperature
- Both current and temperature
Useful laser characteristics include:
- Narrow spectral output
- Strong side-mode suppression
- Stable single-mode operation
- Predictable current tuning
- Predictable temperature tuning
- Sufficient optical power
- Suitable package thermal control
An FP laser’s multiple longitudinal modes can make precise absorption-line targeting more difficult.
VCSELs can be used in some spectroscopy and sensing architectures, but they are not the default choice when the primary requirement is a narrow, precisely controlled wavelength.
For methane sensing, Lumi offers the 1653.7nm DFB Laser Diode for Methane Gas Sensing, illustrating how DFB wavelength control can be combined with thermal packaging for TDLAS integration.
Best Laser Type for Optical Communication
There is no single winner for “optical communication.”
The answer depends on link architecture.
Short-Reach Multimode Datacom
VCSEL is particularly strong in:
- Data-center links
- Short-reach optical interconnects
- Multimode fiber
- Compact high-speed transmitters
850 nm is a common wavelength region for this ecosystem.
Wavelength-Defined Telecom
DFB is a strong fit when the system requires:
- Defined channel wavelength
- Narrower spectrum
- WDM compatibility
- Longer transmission distances
- Strong spectral stability
Broad-Tolerance or Cost-Sensitive Links
FP can still be appropriate when the link does not require narrow wavelength control.
The correct question is therefore not:
Which laser is best for communication?
It is:
What wavelength, fiber, distance, channel plan, modulation format and cost structure does the link require?
Best Laser Type for 3D Sensing and ToF
VCSEL is a strong fit for many active 3D-sensing and time-of-flight systems.
The architecture offers:
- Surface emission
- Compact packaging
- Fast pulsed operation
- 2D arrays
- High-volume wafer processing
- Compatibility with diffusers and DOE optics
940 nm VCSELs are widely used in proximity and 3D-sensing ecosystems.
Lumi’s 940nm 1616 SMD VCSEL & Photodiode – 1616VCA940R8-PD0224-Z integrates a 940 nm VCSEL and photosensitive diode in a compact 1616 SMD package.
This product also demonstrates another important point:
VCSEL is the laser architecture; the SMD body and integrated detector are package-level and functional choices.
Best Laser Type for General OEM Optical Systems
FP architecture remains important because not every optical system benefits from narrow-linewidth DFB behavior or VCSEL array capability.
Consider FP when:
- The system tolerates multiple longitudinal modes
- The detector response is broad
- No narrow absorption line is targeted
- Cost and optical output matter more than spectral purity
- A conventional edge-emitting source fits the optical layout
Examples may include:
- General optical transmission
- Alignment
- Pumping
- Industrial optical modules
- Broad-tolerance sensors
The engineering principle is simple:
If a more complex laser architecture does not solve a real system requirement, the additional complexity may not create value.
Which Laser Diode Type Should You Choose?
The following decision sequence provides a practical first filter.
Question 1: Do You Need a Narrow, Precisely Controlled Wavelength?
If yes, start with DFB.
Typical examples:
- TDLAS
- Spectroscopy
- Wavelength-defined telecom
- Precision optical sensing
If no, continue.
Question 2: Do You Need Surface Emission, Compact Arrays, ToF or 3D Sensing?
If yes, start with VCSEL.
Typical examples:
- 850 nm datacom
- 940 nm proximity sensing
- Time-of-flight
- 3D sensing
- Structured-light or flood illumination
If no, continue.
Question 3: Is a Cost-Effective Edge-Emitting Source with Broader Spectral Tolerance Sufficient?
If yes, evaluate FP.
Typical examples:
- General optical source
- Broad-tolerance links
- Pumping
- Cost-sensitive OEM systems
After choosing the architecture, verify:
- Wavelength
- Optical power
- Linewidth / mode behavior
- Beam divergence
- Modulation
- Temperature range
- Package
- Fiber interface
- Reliability
- Production volume
Architecture selection is only the first step.
Common Selection Mistakes
Mistake 1: Choosing DFB Simply Because It Sounds More Advanced
DFB is valuable when wavelength control is valuable.
If the system does not use that spectral precision, an FP device may be the more efficient engineering choice.
Mistake 2: Assuming FP Means Low Quality
FP describes the optical cavity, not product quality.
A well-designed FP device can provide excellent reliability, optical power and OEM performance.
Mistake 3: Assuming VCSEL Means Low Power
A single VCSEL emitter may have modest power, but arrays can scale total optical output substantially.
Always distinguish single-emitter power from total array power.
Mistake 4: Assuming VCSEL Means Single Mode
VCSELs can be designed for single- or multimode operation.
Mode behavior must be checked on the specific part.
Mistake 5: Confusing Architecture with Package
DFB, FP and VCSEL are laser architectures.
TO-can, butterfly, SMD and fiber-coupled are package or product forms.
Mistake 6: Selecting the Chip Architecture Without Considering the Final Package
The package affects:
- Thermal resistance
- Temperature stability
- Beam alignment
- Fiber coupling
- Electrical connections
- Testability
- Mechanical reliability
A good chip in the wrong package can still be a poor system choice.
Lumi FP, DFB and VCSEL Options
Lumi supports multiple semiconductor laser architectures and package levels for OEM projects.
FP Laser Diodes
FP devices are suitable where customers need an edge-emitting semiconductor source and the application does not require the spectral selectivity of a DFB design.
Lumi’s portfolio includes FP devices in packaged formats for OEM integration.
DFB Laser Diodes
DFB is a core Lumi product direction for:
- TDLAS
- Gas sensing
- Optical communication
- Spectroscopy
- Precision photonics
Available configurations include TO-packaged, butterfly and fiber-pigtailed products depending on the wavelength and application.
VCSEL Devices
Lumi’s VCSEL options include compact SMD devices for high-speed and sensing applications.
Representative products include:
The goal is not to push every project toward the most complex architecture.
It is to identify which cavity design and package combination actually creates value in the customer’s optical system.
Frequently Asked Questions
What is the main difference between DFB, FP and VCSEL lasers?
FP commonly uses a facet-defined edge-emitting cavity and can support multiple longitudinal modes. DFB uses an integrated grating for wavelength-selective feedback and typically provides a strong dominant longitudinal mode. VCSEL uses a short vertical cavity between DBR mirrors and emits through the wafer surface.
Is a VCSEL a type of DFB laser?
No. VCSEL and DFB describe different cavity architectures. A typical VCSEL uses vertical DBR mirrors, while a conventional DFB laser uses distributed grating feedback along an in-plane cavity.
Are DFB and FP both edge-emitting lasers?
They are commonly implemented as edge-emitting semiconductor lasers. The optical field travels along the wafer plane and exits through an edge of the chip.
Which laser diode has the narrowest linewidth?
Among these three general architecture families, a DFB laser is commonly the starting choice when narrow spectral output and strong longitudinal-mode control are required. The final linewidth still depends on the specific device and operating conditions.
Which is better for gas sensing: DFB, FP or VCSEL?
For many TDLAS gas-sensing systems, DFB is the strongest starting point because narrow spectral output, side-mode suppression and controlled wavelength tuning are central to absorption-line measurement.
Which is better for 3D sensing?
VCSEL is a strong fit for many 3D-sensing and ToF systems because surface emission supports compact optics and dense emitter arrays. The final source still depends on power, pulse conditions, field of view and safety requirements.
Which laser is best for optical communication?
It depends on the link. VCSEL is widely used in short-reach multimode datacom, DFB is strong in wavelength-defined telecom links, and FP can be suitable where spectral requirements are more relaxed.
Is FP cheaper than DFB?
FP architecture can be simpler because it does not require a DFB grating, but the final cost depends on wavelength, power, package, testing, production volume and system requirements. Compare total system cost rather than architecture alone.
Can VCSELs produce high optical power?
Yes, especially through arrays. A single VCSEL emitter may provide modest power, while a multi-emitter VCSEL array can scale total optical output significantly.
Are DFB, FP and VCSEL package types?
No. They are laser architectures. Package terms include bare chip, TO-can, butterfly, SMD and fiber-coupled formats.
Choose the Architecture from the Application, Not the Label
FP, DFB and VCSEL all belong to the semiconductor laser family, but they solve different optical problems.
The simplest selection logic is:
Need precise wavelength control → start with DFB
Need surface emission, compact arrays or active 3D sensing → start with VCSEL
Need a practical edge-emitting source without demanding spectral control → evaluate FP
Then move to the device-level requirements:
- Wavelength
- Optical power
- Spectral behavior
- Beam
- Modulation
- Temperature
- Package
- Fiber
- Reliability
- Production volume
For OEM projects, the final decision should combine laser architecture + package + application requirements rather than treating any one parameter as the answer.
Explore the Lumi laser diode product range or contact Lumi with your target wavelength, power, package, fiber requirement, operating conditions and application for project evaluation.
