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Power stability, linewidth, beam quality

MDL-HD-650650 nm red CW laser

650 nm

The MDL-HD-650 is a 650 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-650

15 specification rows

Output / average power1.5~3 W
Beam / notesHigh Stability Red Laser
Operating modeCW
Power stability (rms, 4 hours ± 3°C)<2%, <1%, <0.5%
Transverse modeMultimode
Polarization directionHorizontal+ Vertical
Beam divergence, full angle (mrad)~2.5×2.5
Warm-up time (minutes)<5
Operating temperature (℃)25±3
Power supply (100-240VAC)PSU-N-FDA/PSU-N-LED
Expected lifetime (hours)>10000
Central wavelength (nm)650±15/ 655±15
Beam diameter at the aperture (mm)~6.7×7.2
Beam height from base plate (mm)25
Modulation optionDC-1kHz, 1kHz-10kHz, 10kHz-30kHz optional; TTL and Analog optional

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Model selection

Nearby series comparison

Compare MDL-HD-650 with the closest available models in the CW Lasers family.

Selection parameterMDL-HD-650 (current)TEM-LN-650MLL-III-650L
Wavelength650 nm650 nm650 nm
Optical power / pulse energy1.5~3 W1~50 mW1~180 mW
Operating mode / pulse widthCWCWCW
Beam qualityMultimode<1.1Near TEM00