SLM, narrow linewidth, coherence
MDL-E-940940 nm near-infrared single-frequency laser
940 nmThe MDL-E-940 is a 940 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-E-940
18 specification rows
| Output / average power | 1~30 mW |
|---|---|
| Beam / notes | Linewidth <0.03 nm! |
| Operating mode | CW |
| Power stability (rms, 4 hours ± 3°C) | <2%, <1%, <0.5% |
| Transverse mode | Multimode |
| Beam divergence, full angle (mrad) | <3.0 |
| Warm-up time (minutes) | <5 |
| 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) | 940±5 |
| Spectral line width (nm) | <0.06, <0.03 |
| Frequency shift (pm) (over ±2°C and 2hrs) | <20 |
| M² | <1.5 |
| Beam diameter at the aperture (1/e2, mm) | ~3.5 |
| Polarization ratio | >50:1, (>100:1 optional) Horizontal±5 degree (Vertical optional) |
| Beam height from base plate (mm) | 30 |
What do you need?
Tell us the output power, linewidth and beam delivery you need, and we'll reply with the matching configuration and lead time.
Model selection
Nearby series comparison
Compare MDL-E-940 with the closest available models in the Single-Frequency Lasers family.
| Selection parameter | MDL-E-940 (current) | TUN-918~941 | MLL-III-937L |
|---|---|---|---|
| Wavelength | 940 nm | 937 nm | 937 nm |
| Optical power / pulse energy | 1~30 mW | 1~40 mW | 1~200 mW |
| Operating mode / pulse width | CW | CW | CW |
| Beam quality | <1.5 | Near TEM00 | <1.5 |
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