520 nm Laser Module

Our 520 nm laser module is designed for research, OEM integration and advanced analytical applications. It provides stable green emission for reliable excitation, detection and high-precision optical workflows. Scientists and engineers use this wavelength across material analysis, fluorescence imaging, Raman excitation and general laboratory setups.

Raman Spectroscopy
Confocal microscopy
Food sorting
Flow cytometry
OEM / System Integration

If you would like more information or wish to request a non-binding quote, feel free to contact us at any time.

Technical Specifications

Laser	Lambda Beam	Lambda Beam pigtailed	Lambda MINI	Lambda MINI Fiber
Output power single-mode	50 mW, 80 mW, 120 mW	15 mW	50 mW	30 mW, 50 mW
Output power multi-mode	500 mW

Stability & Thermal Engineering

Power Stability

With an output stability of < 1 % RMS over 10 hours, the laser maintains consistent illumination over extended experiments. This level of control reduces drift and noise in quantitative fluorescence and imaging applications. It supports reliable comparison across multiple measurement cycles.

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520 nm Laser Module: Temperature Regulation

A TEC controller with ± 0.01 °C precision ensures minimal wavelength and power drift. The system remains stable even under changing laboratory conditions. This minimizes thermal fluctuations that typically affect sensitive optical measurements.

Beam Quality & Optical Performance

An M² value of < 1.2 provides a clean, near-Gaussian beam for precise focusing. This level of beam purity from a 520 nm laser module is ideal for microscopy and high-resolution imaging.

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Low Noise Output

The 520 nm laser system delivers a highly stable output with intensity noise of <0,25% RMS. This low noise level ensures clean and reliable signals in sensitive detection setups. It significantly reduces measurement uncertainty in fluorescence, spectroscopy and imaging applications. As a result, even low-intensity signals can be evaluated with high confidence.

Where 520 nm lasers are used

520 nm comes from a direct green diode rather than a frequency doubled solid state source. That changes the engineering trade completely: no doubling crystal, no thermal stabilisation of a nonlinear stage, faster warm-up and direct current modulation. The spectral line is broader than DPSS green, which matters for interferometry and not at all for most other uses.

Alignment and positioning. Green sits close to the peak of the eye's photopic response, so a green beam appears far brighter than a red or violet one at the same optical power.
Machine vision and triangulation. Direct modulation allows fast gating and structured light patterns.
Fluorescence excitation. Covers part of the range normally served by 532 nm.
Portable and battery powered instruments. Lower power draw and no doubling stage to keep warm.

520 nm or 532 nm?

Take 520 nm when you need green light that switches fast, starts instantly and costs less. Take 532 nm when you need a narrow line: for Raman spectroscopy, holography and interferometry the DPSS source is the correct choice and the direct diode is not a substitute.

Put simply: 520 nm for seeing and illuminating, 532 nm for measuring.

From our knowledge base

Integration of 520 nm Laser module systems

Choosing the right 520 nm laser module requires a clear understanding of your technical needs. The optical output should match the sensitivity of your detectors, as insufficient power could compromise measurement quality. Thermal stability is another essential factor. Even small temperature shifts can influence emission. A system with reliable temperature control ensures consistent results. Mechanical robustness helps maintain long-term alignment, reducing maintenance requirements. The 520 nm laser system should also be compatible with your existing optics, as easy adaptation saves time and resources.

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