Holographic notch filters provide excellent attenuation of the Rayleigh line while passing bands as near to it as 50 cm^-1. These filters exhibit good transmission in both the Stokes and anti-Stokes regions.

The advantage of Holographic Notch filters are: high attenuation of the Rayleigh line; narrow bandwidth; sharp spectral edges; good transmission outside the band, even at low wavenumbers; high damage threshold; and stability to the environment.

Technical Specifications
Diameter: 1"
Thickness: 0.23"
Filter clear aperture: Active filter diameter: External diameter less 0.375"

Laser Attenuation:
Optical density (averaged over entire clear aperture: > 4.0

Spectral Bandwidth:
Wavenumbers between O.D. 0.3 or 50% transmission points: <350cm^-1
Nanometers between O.D. 0.3 or 50% transmission points: <10nm

Spectral Edgewidth:
Wavenumbers between O.D. 0.3 and O.D. 4.0: <150cm^-1
Nanometers between O.D. 0.3 and O.D. 4.0: <4nm

Available Wavelength Range: 488–1400nm