Power stability, linewidth, beam quality

MLL-397(FC)397 nm UV CW laser

397 nm

The MLL-397(FC) is a precision 397 nm CW laser delivering 1~80 mW output power. View technical specifications and request the full datasheet from Precisometer.

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Specifications

MLL-397(FC)

2 specification rows

Wavelength	397 nm
Output / average power	1~80 mW
Beam / notes	397 nm UV Diode Laser

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Model selection

Nearby series comparison

Compare MLL-397(FC) with the closest available models in the CW Lasers family.

Selection parameter	MLL-397(FC) (current)	MLL-III-397L	MLL-III-397
Wavelength	397 nm	397 nm	397 nm
Optical power / pulse energy	1~80 mW	1~100 mW	1~100 mW

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Choosing a laser

Guides that put this laser in context

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

Laser emission spectrum, intensity noise traces, and beam quality profiles illustrating the main laser specifications

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.

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.

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.