Power stability, linewidth, beam quality
MDL-III-640640 nm red CW laser
640 nmThe MDL-III-640 is a 640 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. The TTL and analog modulation options control different things: TTL gates the beam on and off, while analog control varies its intensity. Modulation bandwidth sets how quickly the source can follow a changing command.
Specifications
MDL-III-640
18 specification rows
| Output / average power | 1~200 mW |
|---|---|
| Beam / notes | High Stability Diode Laser |
| Operating mode | CW |
| Power stability (rms, 4 hours ± 3°C) | <2%, <1%, <0.5% |
| M2 | <1.5 / <1.2 |
| Beam divergence, full angle (mrad) | <1.0 |
| Warm-up time (minutes) | <5 |
| Cooled method | Conduction |
| Operating temperature (°C) | 10-35 |
| Power supply (100-240VAC) | PSU-III-FDA/PSU-III-LED/PSU-A-D/PSU-III-OEM |
| Expected lifetime (hours) | >10000 |
| Central wavelength (nm) | 640±5 |
| Transverse mode | Near TEM00 |
| M² | <1.5 |
| Beam diameter at the aperture (1/e2, mm) | ~3.0 |
| Polarization ratio | >50:1, (>100:1 optional) Horizontal±5 degree (Vertical optional) |
| Beam height from base plate (mm) | 24.8 |
| Modulation option | DC-1kHz, 1kHz-10kHz, 10kHz-30kHz, 30kHz-100kHz optional; TTL and Analog optional |
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Model selection
Nearby series comparison
Compare MDL-III-640 with the closest available models in the CW Lasers family.
| Selection parameter | MDL-III-640 (current) | MRL-640(Line) | MRL-640(FC) |
|---|---|---|---|
| Wavelength | 640 nm | 640 nm | 640 nm |
| Optical power / pulse energy | 1~200 mW | 1~4000 mW | 1~10000 mW |
| Operating mode / pulse width | CW | CW | CW |
| Beam quality | <1.5 | TEM00 | TEM00 |
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