Power stability, linewidth, beam quality
MDL-III-400L400 nm violet CW laser
400 nmThe MDL-III-400L is a 400 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-400L
16 specification rows
| Output / average power | 1~300 mW |
|---|---|
| Beam / notes | High Stability Violet Blue Laser |
| Operating mode | CW |
| Power stability (rms, 4 hours ± 3°C) | <2%, <1%, <0.5% |
| Transverse mode | Near TEM00 |
| M2 | <1.5 / <1.2 |
| Beam divergence, full angle (mrad) | ~0.5 |
| 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) | 400±5 |
| 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-400L with the closest available models in the CW Lasers family.
| Selection parameter | MDL-III-400L (current) | MDL-400(FC) | FC-400 |
|---|---|---|---|
| Wavelength | 400 nm | 400 nm | 400 nm |
| Optical power / pulse energy | 1~300 mW | 1~250 mW | 1~3 W |
| Operating mode / pulse width | CW | CW | CW |
| Beam quality | Near TEM00 | Multimode | — |
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