Power stability, linewidth, beam quality
MSL-FN-639639 nm red CW laser
639 nmThe MSL-FN-639 is a 639 nm continuous-wave solid-state laser. Light is amplified in a solid gain medium inside an optical resonator. The resonator feeds light back through that medium to build the laser beam. The pump arrangement and cooling determine how energy is supplied and waste heat is removed. 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-FN-639
23 specification rows
| Output / average power | 1~650 mW |
|---|---|
| Operating mode | CW |
| Transverse mode | TEM00 |
| Longitudinal mode | Single |
| Spectral line width (nm) | <1MHz |
| Noise of amplitude (rms, 20Hz-20MHz) | <1%, <0.5% |
| Warm-up time (minutes) | <10 |
| Pointing stability over temperature (urad/°C) | <8 |
| Frequency shift (MHz) (over ±2°C and 8hrs) (optional) | <±200 |
| Operating temperature (°C) | 10-35 |
| Power supply (100-240VAC) | PSU-H-FDA |
| Expected lifetime (hours) | >10000 |
| Wavelength (nm) | 639±1 |
| Power stability (rms, 4 hours ±3°C) | <3%, <2%, <1% |
| Coherent length (m) | >50 |
| M² | <1.2,<1.1 |
| Beam diameter at the aperture (1/e2, mm) | <1.5 |
| Beam divergence, full angle (mrad) | <1.5 |
| Polarization ratio | >100:1, Horizontal (Vertical optional) |
| Pointing stability (urad) (over 2 hours after warm-up and ±3°C) | <50 |
| Frequency shift with temp (MHz/°C) (optional) | <200 |
| Beam height from base plate (mm) | 27.4 |
| Laser head consumption (W) | 15 (typical), <25 (40°C) |
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Model selection
Nearby series comparison
Compare MSL-FN-639 with the closest available models in the CW Lasers family.
| Selection parameter | MSL-FN-639 (current) | MSL-R-639 | MSL-DU-639-W |
|---|---|---|---|
| Wavelength | 639 nm | 639 nm | 639 nm |
| Optical power / pulse energy | 1~650 mW | 650~3000 mW | 1~750 mW |
| Operating mode / pulse width | CW | CW | CW |
| Beam quality | <1.2,<1.1 | <1.3 | <1.2 |
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