Chicago Industrial Reuse and Parts Blog-Newsgroup > North Chicago
> Used
> Laser rejection filter for S10 respirator
Laser rejection filter for S10 respirator
side to side 6.5 mm and convex shape
Description: 1 Pair RPLEP MK1A ( night use )
At the detector, both signal and scatter will be present, with the scatter orders of magnitude higher than the signal. To improve signal-to-noise, both Laser Rejection and Edge filters can be used to attenuate, or block, the scattered energy from reaching the detector.
Laser rejection filters are designed to block more than 99.9% of light in around 40nm bandwidth. The average transmission outside the stopband is 75% except in those spectral regions where higher and lower harmonics cause relatively high reflection. Specially designed Rejection Band filters reflect more than one spectral band, or perform at off-normal angles of incidence. Rejection, or Notch, filters provide the ability to measure both Stokes and anti-Stokes signals simultaneously and have tunability for variable laser lines. Edge filters can also be used for laser rejection, providing deeper blocking of the laser line and steeper edges, for small Stokes shifted applications.
