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Interference Filter

Laser line filters are narrow bandpass filters centered on the resonance of the laser, which attenuate the background plasma and secondary emissions that often result in erroneous signals.
Standard wavelength:
355, 405, 488, 514, 532, 633, 780, 850, 1064, 1540, 1570
 
Features
  • high transit efficiency to 70%
  • low wavelength shift to 1nm
  • low scratch loss
  • optical performence stable
 
Specifications:
 
Substrate BK7
Diameter +0/-0..2mm
Center Wavelength ± 3nm
FWHM ± 5nm
Transmission >90%
Blocking OD > 4.0
Beam Deviation <30 arc sec.
Transmitted Wavefront 1/4 wave RMS @ 633nm
Surface Quality 60-40