Power stability, linewidth, beam quality
MLL-III-420420 nm violet CW laser
420 nmThe MLL-III-420 is a 420 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
MLL-III-420
16 specification rows
| Output / average power | 1~500 mW |
|---|---|
| Beam / notes | Laser |
| Operating mode | CW |
| Power stability (rms, 4 hours ± 3°C) | <2%, <1%, <0.5% |
| Noise of amplitude (rms, 20Hz-20MHz) | <1%, <0.5% |
| Beam divergence, full angle (mrad) | <2.5×0.2 |
| 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) | 420±5 |
| Transverse mode | Multimode |
| Beam diameter at the aperture (1/e2, mm) | <2×5 |
| 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 MLL-III-420 with the closest available models in the CW Lasers family.
| Selection parameter | MLL-III-420 (current) | MLL-III-420L | MLL-H-420 |
|---|---|---|---|
| Wavelength | 420 nm | 420 nm | 420 nm |
| Optical power / pulse energy | 1~500 mW | 1~100 mW | 500~1300 mW |
| Operating mode / pulse width | CW | CW | CW |
| Beam quality | Multimode | Near TEM00 | Multimode |
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