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  4. RazorEdge - Model 248 nm - Ultrasteep ...

RazorEdgeModel 248 nm -Ultrasteep Long-Pass Edge Filter

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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.

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  • Specification : Value
    • Transmission Band 1 : Tavg > 90% 261 – 560.8 nm
    • Edge Wavelength 1 : 251.1 nm
    • Blocking Band 1 : ODabs > 6 248.6 nm
    • Blocking Band 2 : ODavg > 6 202 – 248.6 nm (typical)
    • Transition Width (nm) : 5 nm
    • Transition Width (cm-1) : 805 cm-1
    • Edge Steepness (%) : 0.8%
    • Edge Steepness (nm) : 2.0 nm
    • Edge Steepness (cm-1) : 319.2 cm-1
  • Specification : Value
    • Laser Wavelength 1 : 248.6 nm
    • Angle of Incidence : 0 ± 2 degrees
    • Cone Half-angle : 5 degrees
    • Optical Damage Rating : 0.5 J/cm2 @ 266 nm (10 ns pulse width), 1 J/cm2 @ 532 nm (10 ns pulse width)
    • Effective Index : 2.24
  • Specification : Value
    • Transverse Dimensions (Diameter) : 25 mm
    • Transverse Tolerance (mounted) : + 0.0 / – 0.1 mm
    • Filter Thickness (Mounted) : 3.5 mm
    • Filter Thickness Tolerance (Mounted) : ± 0.1 mm
    • Clear Aperture : ≥ 22 mm
    • Scratch-Dig : 60-40
    • Substrate Type : Fused Silica
    • Substrate Thickness (unmounted) : 2.0 mm
    • Substrate Thickness Tolerance (unmounted) : ± 0.1 mm
    • Orientation : Arrow on ring indicates preferred direction of propagation of light