Power stability, linewidth, beam quality
MLL-III-488L is a 488 nm CW laser. Used for medical imaging, flow cytometry, dna sequencing. Key specifications: output / average power 1-300 mW, optical noise <0.5%, operating mode CW. View specifications, datasheet and enquiry options from Precisometer.
Specifications
19 specification rows
| Output / average power | 1-300 mW |
|---|---|
| Optical noise | <0.5% |
| Beam / notes | Series: MLL-III-488L |
| Operating mode | CW |
| Power stability (rms, over 4 hours) | <2%, <1%, <0.5% |
| Transverse mode | Near TEM00 |
| M2 | <2, <1.5 |
| Beam divergence, full angle (mrad) | ~1.0 |
| Warm-up time (minutes) | <5 |
| 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) | 488±5 |
| Noise of amplitude (rms, 20Hz-20MHz) | <1%, <0.5% |
| M² | <2, <1.5 |
| Beam diameter at the aperture (1/e2, mm) | ~3.5, ~1.5 |
| 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.
MLL-III-488L: 488 nm emission can be matched to the absorption or excitation band used in Medical imaging. The stated stability or noise figure (<0.5%) helps keep measured intensity changes attributable to the sample rather than source drift.
MLL-III-488L: 488 nm emission can be matched to the absorption or excitation band used in Flow cytometry. The stated stability or noise figure (<0.5%) helps keep measured intensity changes attributable to the sample rather than source drift.
MLL-III-488L: 488 nm emission can be matched to the absorption or excitation band used in DNA sequencing. The stated stability or noise figure (<0.5%) helps keep measured intensity changes attributable to the sample rather than source drift.
System integration
Use these checks to connect MLL-III-488L to the surrounding optical, mechanical and control system. Every value shown is taken from this model's own specification record.
Technical FAQ
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.
Transverse mode: Near TEM00 · M2: <2, <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.
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-III-488L with the closest available models in the CW Lasers family. Confirm option-dependent values on the final configuration before ordering.
| Selection parameter | MLL-III-488L (current) | Long Coherent Length | Low Noise |
|---|---|---|---|
| Wavelength | 488 nm | 488 nm | 488 nm |
| Optical power / pulse energy | 1-300 mW | 1-70 mW | 1-150 mW |
| Operating mode / pulse width | CW | Confirm for this model | Confirm for this model |
| Beam quality | Near TEM00 | Confirm for this model | TEM 00 |
Compare the MLL-III-488L with nearby cw lasers across the wavelength range.
Choosing a laser
Which specifications decide the experiment, and which ones cost money without changing the result.
PhotonicsLinewidth, spectral width, RIN, M², and coherence length answer five different questions. Translate each into the units your experiment is designed in — and learn which ones not to pay for.
Open guide
Optical trappingWhy wavelength is decided by photodamage, focal heating, and detector bandwidth rather than trapping force — and what laser noise costs you in piconewtons.
Open guide
Confocal microscopyConnect fluorophores, pinhole size, Airy units, spatial sampling, scan timing, modulation, and power after the fiber in one practical design workflow.
Open guide