SLM, narrow linewidth, coherence
TUN-448-450448 nm violet tunable single-frequency laser
448 nmThe TUN-448-450 is a 448 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-448-450
20 specification rows
| Wavelength | 448 nm |
|---|---|
| Output / average power | 1~10 mW |
| Beam / notes | Wavelength tunable TUN-448-450/ 1~10 mW 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) | 448-450 |
| Spectral line width (nm) | <0.1 |
| Frequency shift (pm) (over ±2°C and 1hrs) | <10 |
| Coarse tuning accuracy (nm) | ~0.05 |
| Fine tuning range (GHz) | > 30 (20pm) |
| 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 |
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Model selection
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