Laser Diodes & Sources
Narrow Linewidth Semiconductor Lasers
The NLLD narrow-linewidth tunable fiber-coupled laser features a <10 kHz spectral linewidth with wavelength tunability, utilizing a semiconductor gain chip and an external tunable silicon waveguide cavity for superior performance. With an ultra-long coherence length (~100 km), it enables high-precision interferometric and long fiber sensing while its low spectral noise enhances SNR for detecting weak signals in interferometry and backscatter-based sensing. Its low phase noise and high stability make it ideal for atomic clocks, quantum sensing, gravimeters, fiber optic gyroscopes (FOGs), LiDAR, and Doppler velocimetry, while minimal frequency drift ensures long-term measurement stability. Integrated driving electronics allow precise output power and wavelength control, making it a highly reliable solution for cutting-edge scientific and industrial applications.
Configuration options
Build & quote
Configure the options below and add your exact build to the enquiry — we confirm the part number and availability.
We confirm the exact part number for your configuration on enquiry.
Wavelength: 1550nm · Output Power: 10mW · Linewidth: 5kHz · Benchtop: No · Type: Standard · Fiber Type: SM28 · Fiber Buffer: 900µm Tube · Fiber Length: 0.25m · Connector: None
System integration
Integration and compatibility
Use these checks to connect Narrow Linewidth Semiconductor Lasers to the surrounding optical, mechanical and control system. Every value shown is taken from this model's own specification record.
- Optical interface and fiber
- Fiber Type: SM28, PM1550 · Fiber Buffer: 900µm Tube
- Specify connector polish and fiber architecture together. FC/PC, FC/APC and SMA interfaces, and single-mode, multimode and polarization-maintaining fibers, impose different return-loss, mode-field and alignment requirements.
- Wavelength and loss budget
- Wavelength: 1550nm
- Check the Laser Diodes & Sources passband, insertion loss, return loss and power handling at the actual source wavelength; a nominal telecom-band label is not a substitute for the configured range.
Technical FAQ
Integration questions for Narrow Linewidth Semiconductor Lasers
Which fiber and connector does the Narrow Linewidth Semiconductor Lasers use?
Fiber Type: SM28, PM1550 · Fiber Buffer: 900µm Tube. Specify connector polish and fiber architecture together. FC/PC, FC/APC and SMA interfaces, and single-mode, multimode and polarization-maintaining fibers, impose different return-loss, mode-field and alignment requirements.
How should the Narrow Linewidth Semiconductor Lasers be included in an optical power budget?
Wavelength: 1550nm. Check the Laser Diodes & Sources passband, insertion loss, return loss and power handling at the actual source wavelength; a nominal telecom-band label is not a substitute for the configured range.
Need this configured?
Share your wavelength, fiber type, connector, power handling and control requirements and we will qualify the matching configuration and part number.
Model selection
Nearby series comparison
Compare Narrow Linewidth Semiconductor Lasers with the closest available models in the Laser Diodes & Sources family.
| Selection parameter | Narrow Linewidth Semiconductor Lasers (current) | Narrow Line Fiber Coupled Lasers | Narrowline Multimode Fiber Coupled Diode Laser |
|---|---|---|---|
| Wavelength range | 1550nm | 1550nm | 532nm, 638nm, 785nm, 808nm, 976nm, 988nm, 1064nm |
| Fiber type | SM28, PM1550 | SM28, PM1550 | 105/125 |
| Connector / control | None, FC/APC, Special | None, FC/APC, Special | Non, FC/PC, Special |
