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Power stability, linewidth, beam quality

MDL-III-405L405 nm violet CW laser

405 nm

The MDL-III-405L is a 405 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-405L

18 specification rows

Output / average power1~300 mW
Power stability<0.5%
Beam / notesFeatures: Near TEM 00
Operating modeCW
Transverse modeNear TEM00
M2<1.5 / <1.2
Warm-up time (minutes)<5
Cooled methodConduction
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)405±5
M²<1.5
Beam diameter at the aperture (1/e2, mm)~2.5
Beam divergence, full angle (mrad)~0.5
Polarization ratio>50:1, (>100:1 optional) Horizontal±5 degree (Vertical optional)
Beam height from base plate (mm)24.8
Modulation optionDC-1kHz, 1kHz-10kHz, 10kHz-30kHz, 30kHz-100kHz optional; TTL and Analog optional

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Model selection

Nearby series comparison

Compare MDL-III-405L with the closest available models in the CW Lasers family.

Selection parameterMDL-III-405L (current)MSL-T-405MDL-C-405
Wavelength405 nm405 nm405 nm
Optical power / pulse energy1~300 mW1~80 mW1~50 mW
Operating mode / pulse widthCWCWCW
Beam quality<1.5<1.2<1.5