Ideal for Raman spectroscopy, laser-based fluorescence instruments and biomedical laser systems, StopLine single-notch filters offer high transmission over ultrawide passbands (UV to 1600 nm). They offer deep laser-line blocking with OD > 6 for maximum laser rejection, and rejected light is reflected for best alignment and stray light control.Optical SpecificationsSpecificationValueTransmission Band 1T_avg > 80% 350 – 400 nmTransmission Band 2T_avg > 93% 400 – 540.2 nmTransmission Band 3T_avg > 93% 582.6 – 1600 nmNotch Bandwidth 119 nm (typical)Blocking Band 1OD_abs > 6 561.4 nmGeneral Filter SpecificationsSpecificationValueLaser Wavelength 1561.4 nmAngle of Incidence0 ± 5 degreesCone Half-angle5 degreesOptical Damage Rating1 J/cm² @ 532 nm (10 ns pulse width)Filter Effective Index1.93 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