650-17 NNF Iridian Narrow Notch Filter for Raman
Dielectric Narrow Notch Filter for Raman applications
Notch filters are designed to block a narrow range of wavelengths while allowing high transmittance in the passband. The deep blocking at the excitation laser line (OD > 6) delivers more signal with less background noise.
In Raman spectroscopy applications, a notch filter blocks the laser line allowing for easier observations of any Stokes and Anti-Stokes transitions.
Iridian notch filters are manufactured to achieve one of the narrowest blocking ranges available. Their sputtered hard dielectric coatings ensure superior performance, reliability and cost-effectiveness when compared to holographic notch filters.
|CWL - Centre Wavelength (nm)||650|
|Blocking Level (OD)||> 6|
|Transmittance Band (nm)||520 to 864 (except CWL)|
|Transmittance (%)||> 90|
|50% Width (nm)||17|
|Angle of Incidence||0°|
|Outer Diameter of ½" or 1" optics (mm)||12.5 +0/-0.1 or 25 +0/-0.2|
|Clear Aperture of ½" or 1" optics (mm)||8 or 21|
|Thickness (mm)||3 ±0.1|
|Scratch / Dig||60/40|