Optical communication
FL-1908-LN-L: 1908 nm emission must sit inside the fiber-component passband used for Optical communication; connector polish, fiber mode, linewidth and back-reflection tolerance should be specified as one optical interface.
Fiber output, PM options, seed formats
FL-1908-LN-L1908 nm infrared single-frequency low-noise fiber laser
1908 nmFL-1908-LN-L is a 1908 nm Fiber laser. Used for optical communication, light detection, ranging, scientific research. Fiber laser Low Noise Infrared Laser. Key specifications: output / average power 1~5 W, operating mode CW, power stability (rms, 4 hours, ±3℃) <2%, <1%. View specifications, datasheet and enquiry options from Precisometer.
Specifications
FL-1908-LN-L
27 specification rows
| Output / average power | 1~5 W |
|---|---|
| Beam / notes | Fiber laser Low Noise Infrared Laser |
| Operating mode | CW |
| Power stability (rms, 4 hours, ±3℃) | <2%, <1% |
| Transverse mode | TEM00 |
| Longitudinal mode | SLM |
| Current adjustment range | 1-100% |
| Spectral linewidth (nm) | <0.006 |
| Relative intensity noise (rms,10Hz-3MHz) | <0.1%, <0.05% |
| M2 | <1.1 |
| Fiber connector | FC/APC, Collimator optional |
| Fiber length(m) | 1 |
| Fiber jacket | PVC, Metal optional |
| Pointing stability (urad) | <5 / <10 |
| Polarization ratio (dB) | >15, after PM fiber |
| Warm-up time (minutes) | <30 |
| Cooled method | Air cooled or Water cooled |
| Operating temperature (℃) | 15-30 |
| Power supply (VAC) | 110/220VAC |
| Expected lifetime (hours) | >10000 |
| Wavelength (nm) | 1908±1 |
| Output power (W) | 1-5 |
| Frequency shift (MHz)(over ±2℃and 8hours ) | <±200 |
| M² | <1.1 |
| Beam diameter (mm) | 4±1@Collimator output |
| Dimensions of Laser | 483×452 ×133mm3@Air cooled 483×461 ×120 mm3@Water cooled |
| Weight of Laser | 10kg@Air cooled, 11kg@Water cooled |
Application context
Why this design is used
Applications named on this model’s datasheet, expanded with the model’s optical specifications.
Light detection
FL-1908-LN-L: 1908 nm emission determines compatible optics, coatings and detectors for Light detection. The catalogued beam parameter (TEM00) helps predict how the source will focus and propagate through the instrument.
Ranging
FL-1908-LN-L: 1908 nm emission determines compatible optics, coatings and detectors for Ranging. The catalogued beam parameter (TEM00) helps predict how the source will focus and propagate through the instrument.
Scientific research
FL-1908-LN-L: 1908 nm emission determines compatible optics, coatings and detectors for Scientific research. The catalogued beam parameter (TEM00) helps predict how the source will focus and propagate through the instrument.
System integration
Integration and compatibility
Use these checks to connect FL-1908-LN-L to the surrounding optical, mechanical and control system. Every value shown is taken from this model's own specification record.
- Fiber delivery interface
- Fiber connector: FC/APC, Collimator optional
- Match the listed connector and fiber mode exactly; SMA905, FC/PC and FC/APC are not interchangeable, and a single-mode launch requires mode-field as well as numerical-aperture matching.
- Thermal management
- Cooled method: Air cooled or Water cooled · Operating temperature (℃): 15-30
- Provide the stated cooling method and keep the laser-head base thermally coupled; temperature drift moves wavelength, output power and beam pointing.
- Beam parameters at the output
- Transverse mode: TEM00 · M2: <1.1
- Size the downstream optics from the stated beam diameter and divergence rather than from the aperture of the housing, and confirm the polarisation state before specifying isolators or polarising optics.
- Mechanical envelope
- Dimensions of Laser: 483×452 ×133mm3@Air cooled 483×461 ×120 mm3@Water cooled · Weight of Laser: 10kg@Air cooled, 11kg@Water cooled
- Verify the housing drawing and bolt length before designing a mount. A laser head rarely carries a table thread itself, so the adapter between it and an M6 or 1/4"-20 grid is part of the specification.
Technical FAQ
Integration questions for FL-1908-LN-L
How is the FL-1908-LN-L output delivered?
Fiber connector: FC/APC, Collimator optional. Match the listed connector and fiber mode exactly; SMA905, FC/PC and FC/APC are not interchangeable, and a single-mode launch requires mode-field as well as numerical-aperture matching.
What cooling does the FL-1908-LN-L require?
Cooled method: Air cooled or Water cooled · Operating temperature (℃): 15-30. Provide the stated cooling method and keep the laser-head base thermally coupled; temperature drift moves wavelength, output power and beam pointing.
What beam does the FL-1908-LN-L deliver?
Transverse mode: TEM00 · M2: <1.1. Size the downstream optics from the stated beam diameter and divergence rather than from the aperture of the housing, and confirm the polarisation state before specifying isolators or polarising optics.
How is the FL-1908-LN-L mounted?
Dimensions of Laser: 483×452 ×133mm3@Air cooled 483×461 ×120 mm3@Water cooled · Weight of Laser: 10kg@Air cooled, 11kg@Water cooled. Verify the housing drawing and bolt length before designing a mount. A laser head rarely carries a table thread itself, so the adapter between it and an M6 or 1/4"-20 grid is part of the specification.
Need this configured?
Share wavelength, operating mode, output power or pulse energy, linewidth or pulse width, delivery, control, and safety requirements and we will qualify the matching configuration and lead time.
Model selection
Nearby series comparison
Compare FL-1908-LN-L with the closest available models in the Fiber Lasers family. Confirm option-dependent values on the final configuration before ordering.
| Selection parameter | FL-1908-LN-L (current) | FL-1908-SLM | 1908 |
|---|---|---|---|
| Wavelength | 1908 nm | 1908 nm | 1908 nm |
| Optical power / pulse energy | 1~5 W | 1~5 W | 1~5000 mW |
| Operating mode / pulse width | CW | CW | Pulsed |
| Beam quality | TEM00 | TEM00 | <1.1 |
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