Fiber output, PM options, seed formats
1908 is a 1908 nm Fiber laser. Used for optical microscope, photon imaging, physics experiment. M²: <1.1. Key specifications: output / average power 1~5000 mW, spectral linewidth <50 kHz, optical noise <0.05% RIN(DC-3 MHz). View specifications, datasheet and enquiry options from Precisometer.
Specifications
18 specification rows
| Wavelength | 1908 nm |
|---|---|
| Output / average power | 1~5000 mW |
| Spectral linewidth | <50 kHz |
| Optical noise | <0.05% RIN(DC-3 MHz) |
| M² | <1.1 |
| Operating mode | Pulsed |
| Single pulse energy (nJ) | 0.1-0.6 |
| Rep. rate (MHz) | 80±2 |
| Ave power stability (rms, 4 hours±3℃) | <2%, <1% |
| pulse | duration, / high |
| Warm-up time (minutes) | <10 |
| Transverse mode | TEM00 |
| M2 factor | <1.2 |
| Polarization ratio | >100:1 Vertical |
| Cooled method | Air cooled |
| Operating temperature (℃) | 10-35 |
| Power supply (100-240VAC) | 12V/6.67A |
| Expected lifetime (hours) | >10000 |
| Frequency doubler | LASER HEAD (780) / POWER SUPPLY |
Application context
Applications named on this model’s datasheet, expanded with the model’s optical specifications.
1908: 1908 nm emission can be matched to the absorption or excitation band used in Optical microscope. The stated stability or noise figure (<0.05% RIN(DC-3 MHz)) helps keep measured intensity changes attributable to the sample rather than source drift.
1908: 1908 nm emission can be matched to the absorption or excitation band used in Photon imaging. The stated stability or noise figure (<0.05% RIN(DC-3 MHz)) helps keep measured intensity changes attributable to the sample rather than source drift.
1908: Physics experiment benefits from a stable, focusable source. 1908 nm emission fixes the compatible coatings and detector response, while the listed beam characteristic (<1.1) informs waist size and propagation.
System integration
Use these checks to connect 1908 to the surrounding optical, mechanical and control system. Every value shown is taken from this model's own specification record.
Technical FAQ
Cooled method: Air cooled · Operating temperature (℃): 10-35. Provide the stated cooling method and keep the laser-head base thermally coupled; temperature drift moves wavelength, output power and beam pointing.
M²: <1.1 · Transverse mode: TEM00. 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.
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
Compare 1908 with the closest available models in the Fiber Lasers family. Confirm option-dependent values on the final configuration before ordering.
| Selection parameter | 1908 (current) | FL-1908-SLM | FL-1908-LN-L |
|---|---|---|---|
| Wavelength | 1908 nm | 1908 nm | 1908 nm |
| Optical power / pulse energy | 1~5000 mW | 1~5 W | 1~5 W |
| Operating mode / pulse width | Pulsed | CW | CW |
| Beam quality | <1.1 | TEM00 | TEM00 |
Compare the 1908 with nearby fiber lasers across the wavelength range.
Choosing a laser
Which specifications decide the experiment, and which ones cost money without changing the result.
PhotonicsLinewidth, spectral width, RIN, M², and coherence length answer five different questions. Translate each into the units your experiment is designed in — and learn which ones not to pay for.
Open guide
PhotonicsSingle-mode fiber does not preserve polarization. Pin the state, erase it with a scrambler, or maintain it in PM fiber — which one your measurement needs, and the response time and extinction ratio that decide it.
Open guide