Power stability, linewidth, beam quality

LDM-405-20-4405 nm violet high-power CW laser

405 nm

The LDM-405-20-4 is a precision 405 nm CW laser delivering 20 W output power. View technical specifications, download the datasheet, and request configuration options from Precisometer.

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Specifications

LDM-405-20-4

7 specification rows

Wavelength	405 nm
Output / average power	20 W
Beam / notes	Fiber Core Diameter (um): 400
Fiber Core Diameter	400 / μm
Control Model	Serial Port / Analog Voltage
Power Regulation Range	0-20W
Protection	Over Voltage/Over Current/Over Temperature
Water Quality	RO/DI/DH2O

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Model selection

Nearby series comparison

Compare LDM-405-20-4 with the closest available models in the CW Lasers family.

Selection parameter	LDM-405-20-4 (current)	MSL-T-405	MDL-C-405
Wavelength	405 nm	405 nm	405 nm
Optical power / pulse energy	20 W	1~80 mW	1~50 mW

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Compare the LDM-405-20-4 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.

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.