Power stability, linewidth, beam quality
MDL-III-633L633 nm red CW laser
633 nmThe MDL-III-633L is a 633 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-633L
16 specification rows
| Output / average power | 1~100 mW |
|---|---|
| Beam / notes | Substitute for He-Ne 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) | 633±3 |
| Transverse mode | Near TEM00 |
| 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-633L with the closest available models in the CW Lasers family.
| Selection parameter | MDL-III-633L (current) | MRL-633(FC) | FC-633 |
|---|---|---|---|
| Wavelength | 633 nm | 633 nm | 633 nm |
| Optical power / pulse energy | 1~100 mW | 1~70 mW | 1~1000 mW |
| Operating mode / pulse width | CW | — | CW |
| Beam quality | Near TEM00 | — | — |
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