The 795nm VCSEL Laser Diode is a compact single-mode laser source designed for precision optical systems requiring stable wavelength, narrow spectral linewidth and high-speed frequency modulation. It provides a typical peak wavelength of 795nm, typical output power of 0.13mW, typical threshold current of 0.75mA, maximum spectral linewidth of 100MHz, and minimum FM modulation bandwidth of 3.4GHz. TO-46 and TO-39 package options are available, including TEC-stabilized configurations for applications requiring improved thermal and wavelength control.
- Description
Description
795nm VCSEL Laser Diode Overview
The 795nm VCSEL Laser Diode is a single-mode vertical-cavity surface-emitting laser designed for precision optical applications requiring stable wavelength operation, narrow spectral linewidth and compact package integration. The laser operates around a typical vacuum peak wavelength of 795nm and provides a typical optical output power of 0.13mW.
TO-46 and TO-39 package options are available to support different optical, mechanical and thermal integration requirements. TEC-stabilized configurations can be supplied for systems requiring tighter temperature control and improved wavelength stability.
Key Features
- Single-mode VCSEL operating around 795nm
- Typical vacuum peak wavelength: 795nm
- Typical output power: 0.13mW
- Typical threshold current: 0.75mA
- Typical forward voltage: 1.8V
- Typical slope efficiency: 0.21W/A
- Minimum single-mode suppression ratio: 20dB
- Minimum polarization extinction ratio: 15dB
- Maximum spectral linewidth: 100MHz
- Minimum FM modulation bandwidth: 3.4GHz
- Typical wavelength temperature coefficient: 0.055nm/K
- TO-46 package option
- TO-39 package option
- TEC-stabilized package configurations available
Technical Specifications
| Parameter | Symbol | Value Type | Value | Unit |
|---|---|---|---|---|
| Forward Voltage | VF | Typical | 1.8 | V |
| Output Power | Φ | Typical | 0.13 | mW |
| Threshold Current | Ith | Typical | 0.75 | mA |
| Slope Efficiency | SE | Typical | 0.21 | W/A |
| Single-mode Suppression Ratio | SMSR | Minimum | 20 | dB |
| Polarization Extinction Ratio | PER | Minimum | 15 | dB |
| Peak Wavelength (Vacuum) | λpeak-v | Minimum | 794.76 | nm |
| Peak Wavelength (Vacuum) | λpeak-v | Typical | 795 | nm |
| Peak Wavelength (Vacuum) | λpeak-v | Maximum | 795.28 | nm |
| Spectral Linewidth | Λlinewidth | Maximum | 100 | MHz |
| FM Modulation Bandwidth | Fm | Minimum | 3.4 | GHz |
| Temperature Coefficient of Wavelength | TCλ | Typical | 0.055 | nm/K |
| Field of View at FWHM | φx | Typical | 12 | ° |
| Field of View at FWHM | φy | Typical | 12 | ° |
| Field of View at 1/e² | φx | Typical | 20 | ° |
| Field of View at 1/e² | φy | Typical | 20 | ° |
Reference Operating Conditions
The optical and electrical characteristics above are specified at Ta = 75°C, IF = 1.4mA and DC = 100% for the stated measurement conditions.
Single-Mode and Narrow-Linewidth Performance
The 795nm VCSEL provides a minimum 20dB single-mode suppression ratio and a maximum 100MHz spectral linewidth, supporting stable single-mode operation, controlled wavelength performance and high spectral purity in precision optical systems.
A minimum 15dB polarization extinction ratio further supports optical systems where polarization behavior is important for coupling, modulation or downstream optical processing.
Wavelength Stability and Thermal Control
The laser operates across a specified vacuum peak wavelength range of 794.76–795.28nm, with a typical wavelength of 795nm. Its typical wavelength temperature coefficient is 0.055nm/K, making thermal management an important consideration in applications requiring precise wavelength stability.
TEC-stabilized TO-46 and TO-39 package configurations provide active thermal control for applications requiring controlled operating temperature, improved wavelength repeatability and stable long-term optical performance.
High-Speed FM Modulation
The laser provides a minimum 3.4GHz FM modulation bandwidth, enabling high-speed frequency modulation in compact optical systems. The combination of fast modulation, single-mode emission and narrow spectral linewidth makes the device suitable for applications requiring precise spectral control and dynamic wavelength operation.
Beam Characteristics
The typical field of view at FWHM, defined at 50% of maximum optical output, is 12° in both φx and φy. At the 1/e² level, the typical field of view is 20° in both φx and φy.
| Beam Parameter | φx | φy |
|---|---|---|
| Field of View at FWHM | 12° Typ. | 12° Typ. |
| Field of View at 1/e² | 20° Typ. | 20° Typ. |
TO-46 and TO-39 Package Options
The 795nm VCSEL can be supplied in TO-46 and TO-39 package configurations to support different mechanical, optical and thermal integration requirements. TEC-based temperature stabilization can be incorporated according to the required package structure and system design.
| Package Option | Configuration |
|---|---|
| TO-46 | Compact TO-can configuration for optical system integration |
| TO-39 | Larger TO-can configuration suitable for additional thermal or integration requirements |
| TEC Configuration | Active temperature stabilization for improved wavelength control |
Gas Sensing and Pump Source Applications
The 795nm VCSEL can serve as an optical pump source in nonlinear frequency-conversion architectures used for gas sensing. Through suitable frequency-conversion techniques, a 795nm pump laser can support generation of mid-infrared wavelengths in approximately the 3.16–3.67µm region.
This mid-infrared region contains strong fundamental absorption bands of multiple gas molecules, enabling system-level sensing architectures for gases including CH₄, C₂H₆, CO, CO₂, NO₂, N₂O, H₂S, HCl, HF, HBr, H₂CO and OCS, depending on the generated wavelength, selected absorption line and optical system design.
Typical Applications
- Optical pump sources
- Nonlinear frequency-conversion systems
- Gas sensing optical architectures
- Precision spectroscopy systems
- Single-mode optical sources
- High-speed frequency-modulated optical systems
- Research and analytical instrumentation
- OEM photonics modules
OEM and Customization Support
We provide 795nm VCSEL solutions with TO-46, TO-39 and TEC-stabilized package options for different optical and thermal integration requirements. Package configuration and thermal-control design can be evaluated according to the operating environment, wavelength-stability requirement and optical system architecture.
For OEM projects, please provide the required package type, TEC configuration, operating temperature, optical performance requirements, sample quantity and estimated annual demand.
Request a Quote
Contact LumiLaserChip for pricing, samples, lead time and technical support for the 795nm VCSEL Laser Diode with TO-46 / TO-39 and TEC options. Our team can support package selection and project evaluation according to your optical, thermal and integration requirements.
