Power stability, linewidth, beam quality
TUN-779~791785 nm near-infrared tunable CW laser
785 nmThe TUN-779~791 is a 785 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. Tuning changes the selected output wavelength so spectral features can be scanned with the same source. The tuning band specifies which lines can be reached; linewidth describes the width of the selected line.
Specifications
TUN-779~791
16 specification rows
| Wavelength | 785 nm |
|---|---|
| Output / average power | 1~10 mW |
| Spectral linewidth | <0.1 nm |
| Beam / notes | Wavelength Tunable Infrared Laser |
| Operating mode | CW |
| Power stability (rms, over 4 hours) | <1%, <2%, <3% |
| Transverse mode | Near TEM00 |
| Warm-up time (minutes) | <5 |
| Operating temperature (℃) | 20~30 |
| Parameters of customed power supply | TEC: 7~12kΩ |
| Expected lifetime (hours) | 10000 |
| Warranty | 1 year |
| Wavelength range of roughly tuning (nm) | 779~791 |
| Beam diameter at the aperture (1/e2,mm) | ~3.0 |
| Beam divergence, full angle (mrad) | <1.0 |
| Polarization ratio | >50:1 (>100:1, optional) Horizontal±5 degree |
| Beam height from base plate (mm) | 45.5 |
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Model selection
Nearby series comparison
Compare TUN-779~791 with the closest available models in the CW Lasers family.
| Selection parameter | TUN-779~791 (current) | MDL-785(FC) | FC-785 |
|---|---|---|---|
| Wavelength | 785 nm | 785 nm | 785 nm |
| Optical power / pulse energy | 1~10 mW | 1~2000 mW | 1~3 W |
| Operating mode / pulse width | CW | CW | CW |
| Beam quality | Near TEM00 | Multimode | — |
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