Power stability, linewidth, beam quality
MDL-III-690L690 nm red CW laser
690 nmThe MDL-III-690L is a 690 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-690L
16 specification rows
| Output / average power | 1~250 mW |
|---|---|
| Beam / notes | Laser |
| Operating mode | CW |
| Power stability (rms, 4 hours ± 3°C) | <2%, <1%, <0.5% |
| M2 | <1.5 / <1.2 |
| Beam divergence, full angle (mrad) | <1.0 |
| 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) | 690±5 |
| Transverse mode | Near TEM00 |
| 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 |
What do you need?
Tell us the output power, beam quality and beam delivery you need, and we'll reply with the matching configuration and lead time.
Model selection
Nearby series comparison
Compare MDL-III-690L with the closest available models in the CW Lasers family.
| Selection parameter | MDL-III-690L (current) | FC-D-690 | MLL-III-690L |
|---|---|---|---|
| Wavelength | 690 nm | 690 nm | 690 nm |
| Optical power / pulse energy | 1~250 mW | 1~450 mW | 1~250 mW |
| Operating mode / pulse width | CW | — | CW |
| Beam quality | Near TEM00 | — | Near TEM00 |
Related cw lasers
Compare the MDL-III-690L with nearby cw lasers across the wavelength range.
