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Power stability, linewidth, beam quality

MLL-III-642-SM642 nm red CW laser

642 nm

MLL-III-642-SM is a 642 nm CW laser. Used for flow cytometry, dna sequencing, medical imaging, collimation. SM Fiber output. Key specifications: output / average power 1~100 mW. View specifications, datasheet and enquiry options from Precisometer.

Specifications

MLL-III-642-SM

2 specification rows

Wavelength642 nm
Output / average power1~100 mW
Beam / notesSM Fiber output

Series-level technical context

Engineering context for a thin CW Lasers record

This model has no standalone PDF and only a small number of model-specific rows. The values below are traceable context from 11 nearby configurations on the same source-product record; they define the parameters to qualify, but are not substituted for an order-specific datasheet.

Typical operating fields in the series

  • Output / average power: 1~50 mW
  • Output / average power: 1~100 mW
  • Output / average power: 1~200 mW
  • Operating mode: CW
  • Power stability (rms, 4 hours ± 3°C): <2%, <1%, <0.5%

Beam-quality tolerance context

Nearby series records state M²: <1.1, Beam divergence, full angle (mrad): <1.5, and Beam divergence, full angle (mrad): <1.0. These are series context, not guaranteed values for MLL-III-642-SM; confirm them on the order-specific datasheet.

Optical integration schematic

  1. Step 1Laser source and internal thermal control
  2. Step 2Configured fiber launch or integrated pigtail
  3. Step 3Mode- and connector-matched patch lead
  4. Step 4Collimator, isolator or experiment input

Application context

Why this design is used

Typical uses for this laser type, with the selection logic tied to the model record.

Flow cytometry

MLL-III-642-SM: 642 nm emission can be matched to the absorption or excitation band used in Flow cytometry. Power stability and beam pointing should be confirmed because both affect quantitative image or fluorescence intensity.

DNA sequencing

MLL-III-642-SM: 642 nm emission can be matched to the absorption or excitation band used in DNA sequencing. Power stability and beam pointing should be confirmed because both affect quantitative image or fluorescence intensity.

Medical imaging

MLL-III-642-SM: 642 nm emission can be matched to the absorption or excitation band used in Medical imaging. Power stability and beam pointing should be confirmed because both affect quantitative image or fluorescence intensity.

Collimation

MLL-III-642-SM: Collimation benefits from a stable, focusable source. 642 nm emission fixes the compatible coatings and detector response, while M², divergence and pointing stability should be confirmed for the intended beam path.

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.

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Model selection

Nearby series comparison

Compare MLL-III-642-SM with the closest available models in the CW Lasers family. Confirm option-dependent values on the final configuration before ordering.

Selection parameterMLL-III-642-SM (current)MDL-C-642TEM-LN-642
Wavelength642 nm642 nm642 nm
Optical power / pulse energy1~100 mW1~50 mW1~100 mW
Operating mode / pulse widthConfirm for this modelConfirm for this modelCW
Beam qualityConfirm for this modelConfirm for this model<1.5