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
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
