SLM, narrow linewidth, coherence
721 is a 721 nm Single-Frequency laser. Used for optical microscope, photon imaging, physics experiment. M²: <1.2. Key specifications: output / average power 1~300 mW, spectral linewidth <1 MHz, optical noise <0.5%. View specifications, datasheet and enquiry options from Precisometer.
Specifications
4 specification rows
| Wavelength | 721 nm |
|---|---|
| Output / average power | 1~300 mW |
| Spectral linewidth | <1 MHz |
| Optical noise | <0.5% |
| M² | <1.2 |
Series-level technical context
This model has no standalone PDF and only a small number of model-specific rows. The values below are traceable context from 113 nearby configurations on the same source-product record; they define the parameters to qualify, but are not substituted for an order-specific datasheet.
Nearby series records state M²: <1.5, M²: <1.2, Beam divergence, full angle (mrad): <1.0, and Beam divergence, full angle (mrad): <1.2. These are series context, not guaranteed values for 721; confirm them on the order-specific datasheet.
Application context
Applications named on a datasheet for this product line, interpreted against this model’s listed wavelength and beam data.
721: 721 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.
721: 721 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.
721: Physics experiment benefits from a stable, focusable source. 721 nm emission fixes the compatible coatings and detector response, while the listed beam characteristic (<1.2) informs waist size and propagation.
System integration
Use these checks to connect 721 to the surrounding optical, mechanical and control system. Every value shown is taken from this model's own specification record.
Technical FAQ
M²: <1.2. 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 721 with the closest available models in the Single-Frequency Lasers family. Confirm option-dependent values on the final configuration before ordering.
| Selection parameter | 721 (current) | MSL-R-721 | MSL-FN-720 |
|---|---|---|---|
| Wavelength | 721 nm | 721 nm | 720 nm |
| Optical power / pulse energy | 1~300 mW | 300~1000 mW | 1~100 mW |
| Operating mode / pulse width | Confirm for this model | CW | Confirm for this model |
| Beam quality | <1.2 | <1.3 | Confirm for this model |
Compare the 721 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