Power stability, linewidth, beam quality
MLL-DP-639-A is a 639 nm CW laser. Used for flow cytometry, dna sequencing, medical imaging, collimation. Low Noise Red Laser. Key specifications: output / average power 1500~2000 mW, operating mode CW, power stability (rms, 4 hours±3℃) <3%, <2%, <1%. View specifications, datasheet and enquiry options from Precisometer.
Specifications
18 specification rows
| Output / average power | 1500~2000 mW |
|---|---|
| Beam / notes | Low Noise Red Laser |
| Operating mode | CW |
| Power stability (rms, 4 hours±3℃) | <3%, <2%, <1% |
| Spectral line width (nm) | <0.1, <0.003 |
| Transverse mode | Near TEM00 |
| Noise of amplitude (rms, 1Hz-20MHz) | <1% |
| Beam divergence, full angle (mrad) | <1.2 |
| Polarization ratio | >100:1, Horizontal (Vertical optional) |
| Warm-up time (minutes) | <10 |
| Cooled method | Air Cooled |
| Operating temperature (℃) | 10-35 |
| Power supply (100-240VAC) | PSU-DP-A |
| Expected lifetime (hours) | >10000 |
| Central wavelength (nm) | 639±1 |
| Output power (mW) | 1500-2000 |
| Beam diameter at the aperture (1/e2, mm) | <2.0 |
| Beam height from base plate (mm) | 50 |
Application context
Typical uses for this laser type, with the selection logic tied to the model record.
MLL-DP-639-A: 639 nm emission can be matched to the absorption or excitation band used in Flow cytometry. The stated stability or noise figure (<3%, <2%, <1%) helps keep measured intensity changes attributable to the sample rather than source drift.
MLL-DP-639-A: 639 nm emission can be matched to the absorption or excitation band used in DNA sequencing. The stated stability or noise figure (<3%, <2%, <1%) helps keep measured intensity changes attributable to the sample rather than source drift.
MLL-DP-639-A: 639 nm emission can be matched to the absorption or excitation band used in Medical imaging. The stated stability or noise figure (<3%, <2%, <1%) helps keep measured intensity changes attributable to the sample rather than source drift.
MLL-DP-639-A: Collimation benefits from a stable, focusable source. 639 nm emission fixes the compatible coatings and detector response, while the listed beam characteristic (Near TEM00) informs waist size and propagation.
System integration
Use these checks to connect MLL-DP-639-A to the surrounding optical, mechanical and control system. Every value shown is taken from this model's own specification record.
Technical FAQ
Cooled method: Air Cooled · Operating temperature (℃): 10-35. Provide the stated cooling method and keep the laser-head base thermally coupled; temperature drift moves wavelength, output power and beam pointing.
Transverse mode: Near TEM00 · Beam divergence, full angle (mrad): <1.2. 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 MLL-DP-639-A with the closest available models in the CW Lasers family. Confirm option-dependent values on the final configuration before ordering.
| Selection parameter | MLL-DP-639-A (current) | MSL-FN-639 | MSL-R-639 |
|---|---|---|---|
| Wavelength | 639 nm | 639 nm | 639 nm |
| Optical power / pulse energy | 1500~2000 mW | 1~650 mW | 650~3000 mW |
| Operating mode / pulse width | CW | CW | CW |
| Beam quality | Near TEM00 | TEM00 | TEM00 |
Compare the MLL-DP-639-A with nearby cw lasers across the wavelength range.
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