laser line bandpass filters
- Stop band range: 200 nm-1100 nm, 200 nm-1200 nm
- FWHM=3±0.6 nm, 10±2 nm, 25±3 nm, 50±5 nm
- 25.4 mm outer diameter with mechanical snap ring
- Center wavelength: 405-1064 nm
- Material Schott Borofloat & Soda Lime
- Stopband optical density>OD 4
- Diameter Ø25.4 mm
- Clear aperture : Ø22.0 mm
- Surface finish (scratches/pits) : 80/50
Description
Introduction of Bote Laser Line Bandpass Filters
Bote bandpass and laser line filters are made of vacuum-deposited optical film materials on the substrate.
An optical filter is usually composed of a stack of multiple dielectric films with different refractive indexes. A Fabry-Perot (F-P) interference cavity is formed between the dielectric films and the intermediate spacer layer.
The thickness of the dielectric film is λ/4, and the thickness of the intermediate spacer layer (F-P cavity) = (nλ)/2 (λ is the design center wavelength, n is an integer), which satisfies the constructive interference of the center wavelength.
Therefore, only the center wavelength can be completely transmitted. . By changing the thickness of the spacer layer and the number of dielectric film layers, the center wavelength and bandwidth of the filter can be changed.
In addition to standard line filters, Bote also provides customized services for a variety of filters. If you have special needs, please contact Bote.
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