SLM, narrow linewidth, coherence
411 is a 411 nm Single-Frequency laser. Used for optical microscope, photon imaging, physics experiment. M²: /; Features: Coherent length >30 m. Key specifications: output / average power 1~80 mW, spectral linewidth <10 MHz, optical noise <0.5%. View specifications, datasheet and enquiry options from Precisometer.
Specifications
5 specification rows
| Wavelength | 411 nm |
|---|---|
| Output / average power | 1~80 mW |
| Spectral linewidth | <10 MHz |
| Optical noise | <0.5% |
| Beam / notes | M²: /; Features: Coherent length >30 m |
| Coherence length | >30 m |
Application context
Applications named on a datasheet for this product line, interpreted against this model’s listed wavelength and beam data.
411: 411 nm emission can be matched to the absorption or excitation band used in Optical microscope. The stated stability or noise figure (<0.5%) helps keep measured intensity changes attributable to the sample rather than source drift.
411: 411 nm emission can be matched to the absorption or excitation band used in Photon imaging. The stated stability or noise figure (<0.5%) helps keep measured intensity changes attributable to the sample rather than source drift.
411: Physics experiment benefits from a stable, focusable source. 411 nm emission fixes the compatible coatings and detector response, while M², divergence and pointing stability should be confirmed for the intended beam path.
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 411 with the closest available models in the Single-Frequency Lasers family. Confirm option-dependent values on the final configuration before ordering.
| Selection parameter | 411 (current) | MDL-E-410 | MLL-III-415L |
|---|---|---|---|
| Wavelength | 411 nm | 410 nm | 415 nm |
| Optical power / pulse energy | 1~80 mW | 1~50 mW | 1~100 mW |
| Operating mode / pulse width | Confirm for this model | CW | CW |
| Beam quality | Confirm for this model | <1.5 | Near TEM00 |
Compare the 411 with nearby single-frequency 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