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Precisometer

Power stability, linewidth, beam quality

DL-HD-642642 nm red CW laser

642 nm

DL-HD-642 is a 642 nm CW laser. Used for flow cytometry, dna sequencing, medical imaging, collimation. High Stability Red Laser. Key specifications: output / average power 2~4 W. View specifications, datasheet and enquiry options from Precisometer.

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Specifications

DL-HD-642

2 specification rows

Wavelength642 nm
Output / average power2~4 W
Beam / notesHigh Stability Red Laser

Applications

Typical uses for lasers of this wavelength and type in this catalogue.

  • Flow cytometry
  • DNA sequencing
  • Medical imaging
  • Collimation
  • Laser medical treatment

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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Related cw lasers

Compare the DL-HD-642 with nearby cw lasers across the wavelength range.

Choosing a laser

Guides that put this laser in context

Which specifications decide the experiment, and which ones cost money without changing the result.

All guides
Laser emission spectrum, intensity noise traces, and beam quality profiles illustrating the main laser specifications
Photonics
13 min Spec lab

Laser specifications decoded

Linewidth, 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.

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Low-noise laser head and controller of the type specified for optical trapping
Optical trapping
16 min 2 simulations

Choosing a laser for optical tweezers

Why wavelength is decided by photodamage, focal heating, and detector bandwidth rather than trapping force — and what laser noise costs you in piconewtons.

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Fluorescently labeled cells in a sharp confocal focal plane
Confocal microscopy
14 min Design lab

Designing a confocal fluorescence excitation system

Connect fluorophores, pinhole size, Airy units, spatial sampling, scan timing, modulation, and power after the fiber in one practical design workflow.

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