DFB cooled 1653.7nm laser diode with integrated TEC for methane gas sensing, delivering high wavelength stability and precision for TDLAS-based gas detection systems. The Cooled 1653.7nm DFB Laser Diode is designed for high-precision methane (CH₄) gas sensing applications based on TDLAS technology. Equipped with an integrated thermoelectric cooler (TEC) , this device provides superior wavelength stability and precise temperature control, ensuring accurate gas detection under varying environmental conditions.
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Description
Cooled 1653.7nm DFB Laser Diode for Methane Gas Sensing TO Package (TEC Integrated) Overview
The Cooled 1653.7nm DFB Laser Diode is designed for high-precision methane (CH₄) gas sensing applications based on TDLAS technology. Equipped with an integrated thermoelectric cooler (TEC), this device provides superior wavelength stability and precise temperature control, ensuring accurate gas detection under varying environmental conditions.
Operating at the methane absorption wavelength around 1653.7 nm, this laser diode enables highly sensitive and selective gas measurement. Compared to standard heating-type devices, the cooled DFB design offers enhanced stability, lower wavelength drift, and improved measurement accuracy, making it suitable for demanding sensing environments.
With a compact TO package and 6-pin configuration, this device integrates laser emission, temperature control, and monitoring functions into a single module. It is ideal for high-end gas detection systems, industrial monitoring, and environmental sensing applications where precision and reliability are critical.
Key Features
- Optimized 1653.7 nm wavelength for CH₄ detection
- Integrated TEC for precise temperature control
- Low threshold current down to 10 mA
- High wavelength stability and low drift
- Compact TO package with 6-pin configuration
- Low TEC power consumption
- Wide operating temperature range (-5°C to 75°C)
- High reliability for long-term operation
Applications
- Methane (CH₄) gas sensing systems
- TDLAS high-precision detection modules
- Industrial gas monitoring
- Environmental sensing and emission monitoring
- Safety and leak detection systems
Technical Parameters
| Parameter | Symbol | Condition | Min | Typ | Max | Unit |
|---|---|---|---|---|---|---|
| Threshold Current | Ith | 25°C | 10 | 15 | – | mA |
| Operating Voltage | Vop | Iop = 50 mA | 1.2 | 1.6 | – | V |
| Output Power | Po | Iop = 50 mA | 4 | 6 | – | mW |
| Slope Efficiency | SE | If = 25–65 mA | 0.15 | 0.2 | – | mW/mA |
| Center Wavelength | λc | Iop = 50 mA | 1652.7 | 1653.7 | 1654.7 | nm |
| SMSR | SMSR | Iop = 50 mA | – | 35 | – | dB |
| Temperature Coefficient | Tλ | Iop = 50 mA | – | 0.1 | – | nm/°C |
| Current Coefficient | Iλ | Iop = 50 mA | – | 0.02 | – | nm/mA |
| Resistance | Rs | – | – | 15 | – | Ω |
| TEC Current | ITEC | – | – | 1.0 | – | A |
| TEC Voltage | VTEC | – | – | 1.2 | – | V |
All data are tested at 25°C
Absolute Maximum Ratings
| Parameter | Symbol | Min | Max | Unit |
|---|---|---|---|---|
| Forward Current | If | – | 100 | mA |
| Laser Reverse Voltage | VRL | – | 2 | V |
| Operating Temperature | To | -5 | 75 | °C |
| Storage Temperature | TSTG | -40 | 100 | °C |
Product Size
Pin Configuration
| Pin | Function |
|---|---|
| 1 | TEC (-) |
| 2 | Thermistor |
| 3 | LD (+) |
| 4 | TEC (+) |
| 5 | Thermistor |
| 6 | LD (-) |
DFB Laser Integration
For DFB laser selection, specify the target wavelength, required optical power, package, spectral characteristics and temperature-control requirements. Match the available wavelength-tuning conditions to the absorption line or optical system in the stated application.
Frequently Asked Questions
What type of photonic device is Cooled 1653.7nm DFB Laser Diode for Methane Gas Sensing TO Package (TEC Integrated)?
Cooled 1653.7nm DFB Laser Diode for Methane Gas Sensing TO Package (TEC Integrated) belongs to the DFB product family and is used for laser emission applications.
What wavelength or spectral range does Cooled 1653.7nm DFB Laser Diode for Methane Gas Sensing TO Package (TEC Integrated) use?
The specified wavelength or spectral range is 1653.7 nm. Refer to the technical specifications above for operating conditions and applicable tolerances.
What package is available for Cooled 1653.7nm DFB Laser Diode for Methane Gas Sensing TO Package (TEC Integrated)?
The product is listed in TO Package format. Check the package drawing and pin or fiber details above before integration.
What applications are associated with Cooled 1653.7nm DFB Laser Diode for Methane Gas Sensing TO Package (TEC Integrated)?
The product is listed for Gas Sensing / TDLAS. Suitability should be evaluated against the required optical and electrical specifications.
Related Technical Resources
Additional information
| Device Technology | DFB |
|---|---|
| Wavelength Band | 1600–1799 nm |
| Application | Gas Sensing / TDLAS |
| Package Type | TO Package |
| Device Function | Laser Emission |
| Wavelength / Spectral Range | 1653.7 nm |
| Target Gas | Methane (CH4) |
