RazorEdge filters allow you to see the weakest signals closer to the laser line, especially for Raman spectroscopy applications. With their deep laser-line blocking, ultrawide and low-ripple passbands, hard-coated reliability, and high laser damage threshold, they offer lasting performance and value.Optical SpecificationsSpecificationValueTransmission Band 1T_avg > 90% 272.4 – 600 nmEdge Wavelength 1268.6 nmBlocking Band 1OD_abs > 6 266 nmBlocking Band 2OD_avg > 6 217 – 266 nm (typical)Transition Width (nm)2.7 nmTransition Width (cm-1)372 cm^-1Edge Steepness (%)0.8%Edge Steepness (nm)2.1 nmEdge Steepness (cm-1)298.4 cm^-1General Filter SpecificationsSpecificationValueLaser Wavelength 1266 nmAngle of Incidence0 ± 2 degreesCone Half-angle5 degreesOptical Damage Rating0.5 J/cm² @ 266 nm (10 ns pulse width), 1 J/cm² @ 532 nm (10 ns pulse width)Filter Effective Index2.15 Understanding ‘Effective Index of Refraction’ n_effPhysical Filter Specifications (applies to standard sized parts; contact us regarding other sizes)SpecificationValueTransverse Dimensions (Diameter)25 mmTransverse Tolerance (mounted)+ 0.0 / – 0.1 mmFilter Thickness (Mounted)3.5 mmFilter Thickness Tolerance (Mounted)± 0.1 mmClear Aperture≥ 22 mmScratch-Dig60-40Substrate TypeFused SilicaSubstrate Thickness (unmounted)2.0 mmSubstrate Thickness Tolerance (unmounted)± 0.1 mmOrientationArrow on ring indicates preferred direction of propagation of light