SLM, narrow linewidth, coherence
TUN-628-637628 nm red tunable single-frequency laser
628 nmThe TUN-628-637 is a 628 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-628-637
20 specification rows
| Wavelength | 628 nm |
|---|---|
| Output / average power | 1~40 mW |
| Beam / notes | Wavelength tunable |
| 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) | 628-637 |
| 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) | >40 (55pm) |
| 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?
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 TUN-628-637 with the closest available models in the Single-Frequency Lasers family.
| Selection parameter | TUN-628-637 (current) | TUN-628-637 | TUN-626-635 |
|---|---|---|---|
| Wavelength | 628 nm | 631 nm | 626 nm |
| Optical power / pulse energy | 1~40 mW | 1~40 mW | 1~40 mW |
| Operating mode / pulse width | CW | CW | CW |
| Beam quality | Near TEM00 | Near TEM00 | Near TEM00 |
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