Cooled TO-CAN Laser Diode with Fiber Pigtail for Gas Detection (1273–1653nm)
Cooled TO-CAN laser diode with fiber pigtail, designed for gas detection with stable wavelength output for TDLAS sensing and industrial monitoring applications.
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Description
The cooled TO-CAN laser diode with fiber pigtail is designed for gas detection applications requiring stable wavelength output and compact integration. Featuring an integrated TEC and thermistor, this device ensures precise temperature control and stable single longitudinal mode emission.
Available in key wavelengths such as 1273 nm, 1392 nm, 1512 nm, 1531 nm, and 1653 nm, this laser diode is optimized for gas absorption lines based on HITRAN data, enabling accurate detection of gases such as CH₄, NH₃, CO, and H₂S.
With a cost-effective TO-CAN package and fiber output, this device is ideal for OEM gas sensing modules, portable detection systems, and industrial monitoring applications.
Key Features
• Integrated TEC and thermistor for temperature control
• Stable single longitudinal mode emission
• Cost-effective TO-CAN package
• Fiber pigtail output for easy integration
• Optimized wavelengths for gas detection applications
• Telcordia GR-468 compliant
• Suitable for TDLAS sensing systems
Applications
• Laser gas analysis and detection systems
• TDLAS gas sensing modules
• Methane (CH4) detection
• Industrial gas monitoring
• Portable gas detection devices
Technical Parameters
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Ambient Operating Temperature | -20 | – | 70 | ℃ |
| Laser Operating Temperature | – | 25 | – | ℃ |
| Store Temperature | -40 | – | 85 | ℃ |
| Threshold Current (Ith) | 8 | 15 | – | mA |
| Output Power (Ith+30mA) | – | 3 | – | mW |
| Output Power (100mA) | 8 | – | – | mW |
| Slope Efficiency | – | 0.1 | – | mW/mA |
| Center Wavelength | λ-2nm | λ | λ+2nm | nm |
| Side Mode Suppression Ratio | 35 | 40 | – | dB |
| Optical Isolation | 25 | – | – | dB |
| Power Monitor Current | 100 | 300 | 1000 | μA |
| Power Monitor Dark Current | – | – | 10 | nA |
| Wave. Temp. Coefficient | – | 0.1 | – | nm/℃ |
| Wave. Current. Coefficient | – | 0.01 | – | nm/mA |
| Thermistor B constant | – | 4050 | – | K |
| Thermistor Resistance @25℃ | 9.5 | 10 | 10.5 | kΩ |
Product Size
Pin Configuration
| Pin | Symbol | Description |
|---|---|---|
| 1 | TEC+ | TEC anode |
| 2 | Rth | Thermistor |
| 3 | PD- | PD cathode |
| 4 | PD+ | PD anode |
| 5 | LD- | LD cathode |
| 6 | LD+ | LD anode |
| 7 | Rth | Thermistor |
| 8 | TEC- | TEC cathode |
Ordering Information
| Family Name | Wavelength | – | Cooled | – | Fiber | Connector | – | TO type | PIN length |
|---|---|---|---|---|---|---|---|---|---|
| LTC | 1273
1278 1512 1531 1653 |
– | 0: without TEC
1: with TEC |
– | SM
MM |
1: SC/PC
2: SC/APC 3: SC/UPC 4: FC/PC 5: FC/APC 6: FC/UPC 7: LC/PC 8: LC/APC 9: LC Receptacle X: customized |
– | 60: TO 60
56: TO 56 46: TO 46 |
00: FPC
08: 8mm 11: 11mm |
Example：
| Family Name | Wavelength | – | Cooled | – | Fiber | Connector | – | TO type | PIN length |
|---|---|---|---|---|---|---|---|---|---|
| LTC | XXXX | – | 1 | – | SM | 5 | – | 60 | XX |
Notice：
In gas detection, according to the absorption spectrum data provided by HITRAN, there are usually several absorption peaks for one gas. Clients should first choose the best center wavelength according to their own system needs.
| Gas Composition | Wavelength |
|---|---|
| HF | 1273nm |
| H2O | 1368nm、1392nm |
| NH3 | 1512nm、1531nm |
| C2H2 | 1532.68nm |
| CO | 1567nm |
| H2S | 1590nm |
| C2H4 | 1627nm |
| CH4 | 1650.9nm、1653.7nm |
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