Laser harmonic dichroic filter

Laser harmonic dichroic filter


Dichroic Filters, also known as Dichroic Mirrors or Dichromatic Mirrors, are coated with thin-film dielectric coatings that transmit wavelengths within a specified transmission band and reflect all other wavelengths. By reflecting rejected wavelengths instead of absorbing them, dichroic filters can be used with more intense light sources than absorptive filters. Dichroic Filters are generally used at a 45° angle of incidence to reflect rejected light at 90° to the transmitted light. Dichroic Filters are used in applications such as fluorescence microscopy and flow cytometry to selectively transmit light towards detectors.

material: fused silica, BK7 and other optical glass

Incident Angle: 45 degrees
Dimensional tolerance: +/- 0.1mm
Thickness tolerance: ± 0.1mm
Light transmission aperture: > 90%
Parallelism: < 30 seconds
Surface quality: 40/20
Surface shape: λ/4 or λ/10 @632.8nm per 25mm
Chamfer: Protective < 0.5mmx45°
Coating: One side is coated with a medium beam splitting film, and the other side is coated with an anti-reflection film. Damage threshold: > 5J/cm2, 20ns, 20Hz, @1064nm












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