Measurement
TEM-LN-642: Measurement benefits from a stable, focusable source. 642 nm emission fixes the compatible coatings and detector response, while the listed beam characteristic (<1.5) informs waist size and propagation.
Power stability, linewidth, beam quality
TEM-LN-642642 nm red CW laser
642 nmTEM-LN-642 is a 642 nm CW laser. Used for measurement, communication, spectrum analysis. TEM 00. Key specifications: output / average power 1~100 mW, operating mode CW, power stability (rms, 4 hours ± 3°c) <2%, <1%, <0.5%. View specifications, datasheet and enquiry options from Precisometer.
Specifications
TEM-LN-642
19 specification rows
| Output / average power | 1~100 mW |
|---|---|
| Beam / notes | TEM 00 |
| Operating mode | CW |
| Power stability (rms, 4 hours ± 3°C) | <2%, <1%, <0.5% |
| Noise of amplitude (rms, 20Hz-20MHz) | <1%, <0.5% |
| M2 | <1.1 |
| Beam divergence, full angle (mrad) | <1.5 |
| Warm-up time (minutes) | <5 |
| Operating temperature (°C) | 25±3 |
| Power supply (100-240VAC) | PSU-III-FDA/PSU-III-LED/PSU-A-D |
| Expected lifetime (hours) | >10000 |
| Central wavelength (nm) | 642±5 |
| Output power (mW) | 1-100 |
| Transverse mode | TEM00 |
| Ellipticity | >0.95 |
| M² | <1.1 |
| Beam diameter at the aperture (1/e2, mm) | ~1.0 |
| Beam height from base plate (mm) | 25 |
| Modulation option | DC-1kHz, 1kHz-10kHz, 10kHz-30kHz, 30kHz-100kHz optional; TTL and Analog optional |
Application context
Why this design is used
Applications named on this model’s datasheet, expanded with the model’s optical specifications.
Communication
TEM-LN-642: 642 nm emission must sit inside the fiber-component passband used for Communication; connector polish, fiber mode, linewidth and back-reflection tolerance should be specified as one optical interface.
Spectrum analysis
TEM-LN-642: 642 nm emission sets the excitation and detector-band choice for Spectrum analysis; linewidth and wavelength stability determine how cleanly weak spectral features can be separated from the laser line. The listed beam characteristic (<1.5) also controls focusing and collection geometry.
System integration
Integration and compatibility
Use these checks to connect TEM-LN-642 to the surrounding optical, mechanical and control system. Every value shown is taken from this model's own specification record.
- Thermal management
- Operating temperature (°C): 25±3
- Provide the stated cooling method and keep the laser-head base thermally coupled; temperature drift moves wavelength, output power and beam pointing.
- Beam parameters at the output
- M2: <1.1 · Beam divergence, full angle (mrad): <1.5
- 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.
Technical FAQ
Integration questions for TEM-LN-642
What cooling does the TEM-LN-642 require?
Operating temperature (°C): 25±3. Provide the stated cooling method and keep the laser-head base thermally coupled; temperature drift moves wavelength, output power and beam pointing.
What beam does the TEM-LN-642 deliver?
M2: <1.1 · Beam divergence, full angle (mrad): <1.5. 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.
Need this configured?
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
Nearby series comparison
Compare TEM-LN-642 with the closest available models in the CW Lasers family. Confirm option-dependent values on the final configuration before ordering.
| Selection parameter | TEM-LN-642 (current) | MDL-C-642 | MLL-III-642 |
|---|---|---|---|
| Wavelength | 642 nm | 642 nm | 642 nm |
| Optical power / pulse energy | 1~100 mW | 1~50 mW | 1~200 mW |
| Operating mode / pulse width | CW | Confirm for this model | CW |
| Beam quality | <1.5 | Confirm for this model | Near TEM00 |
Related cw lasers
Compare the TEM-LN-642 with nearby cw lasers across the wavelength range.
