532nm Laser Line Bandpass Filter coligh
532nm Laser Line Bandpass Filter coligh

532nm Laser Line Filter For Raman

532nm laser line filter is an optical filter specifically designed to transmit 514.5 wavelengths. Coligh manufactures a variety of laser line filters for laser systems and biological imaging.

The 532nm laser line filter has key features as below:

  • Specially designed for 532nm green laser, highly efficient in suppressing infrared and ultraviolet stray light
  • Ultra-high transmittance, average transmittance greater than >93%, minimum transmittance >90%
  • Ultra-high laser line cutoff depth, cutoff depth >OD6
  • Narrow bandwidth 2nm, can be customized according to customer needs
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532nm Laser Bandpass Filter Description

The 532nm laser line filter produced by Coligh adopts high-quality dielectric hard coating process and has a stable and ultra-long life. Coligh is a high-performance optical interference filter manufacturer. The 532nm laser line filter produced by Coligh has the following characteristics:

  • The actual test transmittance reaches 98%, and the high transmittance can detect the weakest full-length signal
  • The high cut-off depth of OD>6 outside the laser line can suppress Rayleigh scattering to the maximum extent
  • The half-bandwidth is 2nm, and the ultra-high steepness of the change from 90% transmittance to 10% transmittance can assist in the detection of small Raman shifts
  • We use high-precision multi-layer dielectric interference filters, which can not only achieve steeper filter characteristics, but also make the coating more dense and balanced, and can work stably in harsh environments such as high temperature, high humidity and high-energy lasers

532nm Laser Line Filter Spectrum Performance

532nm Laser Line Filter Technical Datasheet

Center wavelength: 532.00nm Coating Hard-coated
Full Bandwidth half maximum 2nm Angle of Incidence 0 +/-2 deg
Transmission Peak Average>93% Size avaliable Dia12.5nnm Dia 25mm, or custom
Optical Density OD>6 Substrate thickness 1.0mm unmounted
Clear Aperture >80% of diameter Mounted Option Mounted in Black Anodized Ring
Surface quality 60-40 Mounted thickness 3.5+/-0.1mm
Environmental and Physical Durability MIL-STD-810F, MIL-C-48497A

532nm Laser Line Filter Applications

532nm laser line filter is a filter specially used to transmit 532nm green laser and block other unwanted wavelengths. It has a wide range of applications:

  • Raman spectroscopy

Since 532nm is one of the common excitation light sources, 532nm filter is used to ensure the purity of excitation light and improve Raman signal. It is widely used in cell and tissue analysis, drug and material component detection

  • Fluorescence microscopy

In fluorescence microscopy, 532nm laser filter can excite green fluorescent probes such as FITC, Sybr Ggreen, Alex Flor 532

  • Photodynamic therapy

Photodynamic therapy (PDT) is a method used to treat cancer and skin diseases. It can use 532nm wavelength laser to activate Rose Bengal, chlorophyll derivatives (Chlorin e6), and photoporphyrin photosensitizers to produce reactive oxygen, thereby killing diseased cells

  • Biosensing

532nm laser line green light skin can be used for DNA sensing, protein detection, and pathogen detection

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