SLM, narrow linewidth, coherence
MSL-III-780L780 nm near-infrared single-frequency laser
780 nmThe MSL-III-780L is a 780 nm continuous-wave direct diode laser. Electrical current creates optical gain in a semiconductor junction, and the diode generates the laser light directly. Optical feedback selects the oscillating modes, while drive current and junction temperature affect output power and wavelength. Single-longitudinal-mode operation selects one resonator frequency. Linewidth describes the spread around that frequency, while frequency drift describes how its center moves over time. This distinction matters when matching the source to a narrow resonance or an interferometer.
Specifications
MSL-III-780L
20 specification rows
| Output / average power | 1~80 mW |
|---|---|
| Beam / notes | Diode Laser, Linewidth <100 MHz |
| Operating mode | CW |
| Power stability (rms, 4 hours ± 3°C) | <2%, <1%, <0.5% |
| Spectral line width (MHz) | <100, (<50 optional) |
| Noise of amplitude (rms, 20Hz-20MHz) | <1%, <0.5% |
| M2 | <1.5 |
| Beam divergence, full angle (mrad) | ~2.0 |
| Warm-up time (minutes) | <5 |
| Operating temperature (℃) | 10-35 |
| Power supply (100-240VAC) | PSU-III-FDA |
| Expected lifetime (hours) | >10000 |
| Central wavelength (nm) | 780±0.5 |
| Transverse mode | Near TEM00 |
| Longitudinal mode | Single |
| Coherent length (m) | >2 |
| M² | <1.5 |
| Beam diameter at the aperture (1/e2, mm) | ~1.0 |
| Polarization ratio | >50:1, (>100:1 optional) Horizontal±5 degree (Vertical optional) |
| Beam height from base plate (mm) | 24.8 |
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Model selection
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