Power stability, linewidth, beam quality
MDL-III-690L is a 690 nm CW laser. Used for medical imaging, flow cytometry, dna sequencing. Laser. Key specifications: output / average power 1~250 mW, operating mode CW, power stability (rms, 4 hours ± 3°c) <2%, <1%, <0.5%. View specifications, datasheet and enquiry options from Precisometer.
Specifications
17 specification rows
| Output / average power | 1~250 mW |
|---|---|
| Beam / notes | Laser |
| Operating mode | CW |
| Power stability (rms, 4 hours ± 3°C) | <2%, <1%, <0.5% |
| M2 | <1.5 / <1.2 |
| Beam divergence, full angle (mrad) | <1.0 |
| Warm-up time (minutes) | <5 |
| Cooled method | Conduction |
| Operating temperature (°C) | 10-35 |
| Power supply (100-240VAC) | PSU-III-FDA/PSU-III-LED/PSU-A-D/PSU-III-OEM |
| Expected lifetime (hours) | >10000 |
| Central wavelength (nm) | 690±5 |
| Output power (mW) | 1-250 |
| Transverse mode | Near TEM00 |
| Polarization ratio | >50:1, (>100:1 optional) Horizontal±5 degree (Vertical optional) |
| Beam height from base plate (mm) | 24.8 |
| Modulation option | DC-1kHz, 1kHz-10kHz, 10kHz-30kHz, 30kHz-100kHz optional; TTL and Analog optional |
Application context
Applications named on this model’s datasheet, expanded with the model’s optical specifications.
MDL-III-690L: 690 nm emission can be matched to the absorption or excitation band used in Medical imaging. The stated stability or noise figure (<2%, <1%, <0.5%) helps keep measured intensity changes attributable to the sample rather than source drift.
MDL-III-690L: 690 nm emission can be matched to the absorption or excitation band used in Flow cytometry. The stated stability or noise figure (<2%, <1%, <0.5%) helps keep measured intensity changes attributable to the sample rather than source drift.
MDL-III-690L: 690 nm emission can be matched to the absorption or excitation band used in DNA sequencing. The stated stability or noise figure (<2%, <1%, <0.5%) helps keep measured intensity changes attributable to the sample rather than source drift.
System integration
Use these checks to connect MDL-III-690L to the surrounding optical, mechanical and control system. Every value shown is taken from this model's own specification record.
Technical FAQ
Cooled method: Conduction · Operating temperature (°C): 10-35. Provide the stated cooling method and keep the laser-head base thermally coupled; temperature drift moves wavelength, output power and beam pointing.
M2: <1.5 / <1.2 · Beam divergence, full angle (mrad): <1.0. 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 MDL-III-690L with the closest available models in the CW Lasers family. Confirm option-dependent values on the final configuration before ordering.
| Selection parameter | MDL-III-690L (current) | FC-D-690 | MLL-III-690L |
|---|---|---|---|
| Wavelength | 690 nm | 690 nm | 690 nm |
| Optical power / pulse energy | 1~250 mW | 1~450 mW | 1~250 mW |
| Operating mode / pulse width | CW | Confirm for this model | CW |
| Beam quality | <1.0 | Confirm for this model | Near TEM00 |
Compare the MDL-III-690L with nearby cw lasers across the wavelength range.
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