Power stability, linewidth, beam quality
TUN-775~790775 nm near-infrared tunable CW laser
775 nmThe TUN-775~790 is a 775 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-775~790
20 specification rows
| Wavelength | 775 nm |
|---|---|
| Output / average power | 1~40 mW |
| Beam / notes | Tunable Red Laser |
| Operating mode | CW |
| Power stability (rms, 4 hours ± 3°C) | <3%, <2%, <1% |
| Transverse mode | Near TEM00 |
| Beam divergence, full angle (mrad) | <1.0 |
| Warm-up time (minutes) | <5 |
| Operating temperature (℃) | 20-30 |
| Power supply (100-240VAC) | PSU-TUN |
| Parameters of customed power supply | TEC: 7-12kΩ |
| Expected lifetime (hours) | >10000 |
| Wavelength range of roughly tuning (nm) | 775-790 |
| Spectral line width (nm) | <0.1 |
| Frequency shift (pm) (over ±2°C and 1hrs) | <10 |
| Coarse tuning accuracy (nm) | ~0.1 |
| Fine tuning range (GHz) | >30 (60pm) |
| Fine tuning accuracy (nm) | 0.001 |
| Beam diameter at the aperture (1/e2, mm) | ~3.0 |
| Polarization ratio | >50:1, (>100:1 optional) Horizontal±5 degree |
| Beam height from base plate (mm) | 40 |
What do you need?
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Model selection
Nearby series comparison
Compare TUN-775~790 with the closest available models in the CW Lasers family.
| Selection parameter | TUN-775~790 (current) | TUN-775~790 | CW-760~840 |
|---|---|---|---|
| Wavelength | 775 nm | 786 nm | 775 nm |
| Optical power / pulse energy | 1~40 mW | 1~40 mW | 1~2000 mW |
| Operating mode / pulse width | CW | CW | Pulsed |
| Beam quality | Near TEM00 | Near TEM00 | TEM00 |
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