Power stability, linewidth, beam quality
MDL-XS-420420 nm violet CW laser
420 nmThe MDL-XS-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. Continuous-wave operation provides a sustained beam for experiments that need steady illumination.
Specifications
MDL-XS-420
19 specification rows
| Output / average power | 1~100 mW |
|---|---|
| Beam / notes | Laser |
| Operating mode | CW |
| Transverse mode | Multimode |
| Beam divergence, full angle (mrad) | <2.5×0.2 |
| Cooled method | Air cooled |
| Operating temperature (°C) | 10-35 |
| Power supply (100-240VAC) | PSU-H-FDA/PSU-H-LED |
| Expected lifetime (hours) | >10000 |
| Central wavelength (nm) | 420±10 |
| Power stability (rms, 4 hours ± 3°C) | <2%, <1%, <0.5% |
| Noise of amplitude (rms, 20Hz-20MHz) | <1%, <0.5% |
| M² | <1.2 |
| Beam diameter at the aperture (1/e2,mm) | ~1.2 |
| Polarization ratio | >50:1, (>100:1 optional) Horizontal±5 degree (Vertical optional) |
| Warm-up time (minutes) | <5 |
| Beam height from base plate (mm) | 19 |
| Operating voltage (VDC) | 12V/4A |
| Modulation option | DMOD (TTL) DC-1MHz |
What do you need?
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Model selection
Nearby series comparison
Compare MDL-XS-420 with the closest available models in the CW Lasers family.
| Selection parameter | MDL-XS-420 (current) | MLL-III-420L | MLL-III-420 |
|---|---|---|---|
| Wavelength | 420 nm | 420 nm | 420 nm |
| Optical power / pulse energy | 1~100 mW | 1~100 mW | 1~500 mW |
| Operating mode / pulse width | CW | CW | CW |
| Beam quality | <1.2 | Near TEM00 | Multimode |
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