Power stability, linewidth, beam quality
MDL-HD-637637 nm red CW laser
637 nmThe MDL-HD-637 is a 637 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-HD-637
15 specification rows
| Beam / notes | Series: MDL-HD-637 |
|---|---|
| Central wavelength (nm) | 637±10/ 640±10/ 642±10 |
| Operating mode | CW |
| Output power (W) | 2-4 |
| Power stability (rms, 4 hours ± 3°C) | <2%, <1%, <0.5% |
| Transverse mode | Multimode |
| Polarization direction | Horizontal+ Vertical |
| Beam diameter at the aperture (mm) | ~6.0×6.0 |
| Beam divergence, full angle (mrad) | <2.0×2.0 |
| Warm-up time (minutes) | <5 |
| Beam height from base plate (mm) | 25 |
| Operating temperature (℃) | 25±3 |
| Power supply (100-240VAC) | PSU-N-FDA/PSU-N-LED |
| Modulation option | DC-1kHz, 1kHz-10kHz, 10kHz-30kHz optional; TTL and Analog optional |
| Expected lifetime (hours) | >10000 |
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Model selection
Nearby series comparison
Compare MDL-HD-637 with the closest available models in the CW Lasers family.
| Selection parameter | MDL-HD-637 (current) | Long Coherence Length | TUN-628~637 |
|---|---|---|---|
| Wavelength | 637 nm | 637 nm | 637 nm |
| Optical power / pulse energy | 2-4 | 1-50 mW | Wavelength tunable |
| Operating mode / pulse width | CW | — | — |
| Beam quality | Multimode | — | — |
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