Power stability, linewidth, beam quality
TUN-F-638~644 is a 642 nm CW laser. Wavelength Tunable Red Laser. Key specifications: output / average power 1~40 mW, operating mode CW, transverse mode TEM00. View specifications, datasheet and enquiry options from Precisometer.
Specifications
18 specification rows
| Output / average power | 1~40 mW |
|---|---|
| Beam / notes | Wavelength Tunable Red Laser |
| Operating mode | CW |
| Transverse mode | TEM00 |
| Power stability (rms, over 4 hours) | <3%, <2%,<1%, |
| Beam quality (M2) | <1.1 |
| Pointing stability after warm-up (mrad) | <0.05 |
| Warm-up time (minutes) | <5 |
| Operating temperature (℃) | 10~30 |
| Power supply (90-264VAC) | PSU-A-D |
| Expected lifetime (hours) | 10000 |
| Warranty period | 1 year |
| Wavelength (nm) | 638~644 |
| Ellipticity | >0.98 |
| Beam divergence, full angle (mrad) | <1.0 |
| Beam diameter at the aperture (1/e2, mm) | ~1.0 |
| Beam height from base plate (mm) | 45 |
| Modulation option | TTL/Analog 1Hz-5KHz, 1Hz-10KHz, 1Hz-30KHz, and TTL on/off |
Application context
Typical uses for this laser type, with the selection logic tied to the model record.
TUN-F-638~644: 642 nm emission determines compatible optics, coatings and detectors for Optical instrumentation. The catalogued beam parameter (TEM00) helps predict how the source will focus and propagate through the instrument.
TUN-F-638~644: Laboratory measurement benefits from a stable, focusable source. 642 nm emission fixes the compatible coatings and detector response, while the listed beam characteristic (TEM00) informs waist size and propagation.
System integration
Use these checks to connect TUN-F-638~644 to the surrounding optical, mechanical and control system. Every value shown is taken from this model's own specification record.
Technical FAQ
Operating temperature (℃): 10~30. Provide the stated cooling method and keep the laser-head base thermally coupled; temperature drift moves wavelength, output power and beam pointing.
Transverse mode: TEM00 · Beam quality (M2): <1.1. Size the downstream optics from the stated beam diameter and divergence rather than from the aperture of the housing, and confirm the polarisation state before specifying isolators or polarising optics.
Share wavelength, operating mode, output power or pulse energy, linewidth or pulse width, delivery, control, and safety requirements and we will qualify the matching configuration and lead time.
Model selection
Compare TUN-F-638~644 with the closest available models in the CW Lasers family. Confirm option-dependent values on the final configuration before ordering.
| Selection parameter | TUN-F-638~644 (current) | MDL-C-642 | TEM-LN-642 |
|---|---|---|---|
| Wavelength | 642 nm | 642 nm | 642 nm |
| Optical power / pulse energy | 1~40 mW | 1~50 mW | 1~100 mW |
| Operating mode / pulse width | CW | Confirm for this model | CW |
| Beam quality | TEM00 | Confirm for this model | <1.5 |
Compare the TUN-F-638~644 with nearby cw lasers across the wavelength range.
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