442 nm RazorEdge® ultrasteep long-pass edge filter

Semrock Part Number: LP02-442RE-25

IDEX Part Number: FL-009057  /

Semrock
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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Optical Specifications Value
Transmission Band 1 Tavg > 93% 444.5 – 996.1 nm
Blocking Band 1 ODabs > 6 441.6 nm
Blocking Band 2 ODavg > 6 354 – 441.6 nm (typical)
Edge Wavelength 1 442.9 nm
Edge Steepness (%) 0.2%
Edge Steepness (cm-1) 45.2 cm-1
Edge Steepness (nm) 0.9 nm
Laser Wavelength 1 441.6 nm
Transition Width (nm) 2.2 nm
Transition Width (cm-1) 113 cm-1
General Filter Specifications Value
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)
Physical Filter Specifications   Value
Transverse Dimensions (Diameter) 25 mm
Transverse Tolerance (mounted) + 0.0 / – 0.1 mm
Filter Thickness (Mounted) 3.5 mm
Substrate Type Fused Silica
Filter Thickness Tolerance (Mounted) ± 0.1 mm
Clear Aperture ≥ 22 mm
Scratch-Dig 60-40
Substrate Thickness (unmounted) 2.0 mm
Substrate Thickness Tolerance (unmounted) ± 0.1 mm
Orientation Arrow on ring indicates preferred direction of propagation of light

LP02-442RU-25

FL-008946 / 0

Out of Stock Backordered In Stock
  • Laser Wavelength = 441.6 nm
  • 224 cm-1 transition
  • Tavg > 93% 447.3 – 996.1 nm

BLP01-442R-25

FL-008547 / 0

Out of Stock Backordered In Stock
  • Filter with 50% edge at 450 nm
  • 552 cm-1 transition
  • Tavg > 93% from 454 – 900 nm

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TopicDescription
Cleaning Optical FiltersInstructions for cleaning hard coated optical filters
Filter ReliabilityCompares the performance and reliability of hard coated filters to traditional soft-coated filters and provides information about the testing standards for Semrock filters
Measuring Light with Wavelengths & WavenumbersCompares units of wavelength to wavenumbers and provides formulas for calculating wavenumber shift
Laser Damage ThresholdProvides information for calculating laser damage threshold for pulsed and continuous wave lasers
Working with Optical Density Tables to describe the relationship between OD and transmission with tips for quickly calculating OD
Filter Spectra at Non-normal Angles of IncidenceDiscusses how angle tuning affects the spectral response of different types of filters.
Filter Types for Raman Spectroscopy ApplicationsCompares the performance of different combinations of LWP and SWP edge filters, notch and laser line filters for Raman applications
RazorEdge Filter LayoutsDescribes two different filter layouts that are commonly used in Raman applications
Transition Width & Edge SteepnessDescribes how measurements for edge steepness and transition width differ
Journal Article
TopicDescription
Thin-Film Filters for Raman SpectroscopyTuran Erdogan, PhD, and Victor Mizrahi, PhD, Semrock Inc., Spectroscopy, December 2004
Describes the types and functions of filters commonly used in Raman spectroscopy
Application
TopicDescription
Raman SpectroscopyAn overview of Raman spectroscopy, including solutions from Semrock and additional learning resources.

Specifications

TopicDescription
Cleaning Optical FiltersInstructions for cleaning hard coated optical filters
Filter ReliabilityCompares the performance and reliability of hard coated filters to traditional soft-coated filters and provides information about the testing standards for Semrock filters
Measuring Light with Wavelengths & WavenumbersCompares units of wavelength to wavenumbers and provides formulas for calculating wavenumber shift
Laser Damage ThresholdProvides information for calculating laser damage threshold for pulsed and continuous wave lasers
Working with Optical Density Tables to describe the relationship between OD and transmission with tips for quickly calculating OD
Filter Spectra at Non-normal Angles of IncidenceDiscusses how angle tuning affects the spectral response of different types of filters.
Filter Types for Raman Spectroscopy ApplicationsCompares the performance of different combinations of LWP and SWP edge filters, notch and laser line filters for Raman applications
RazorEdge Filter LayoutsDescribes two different filter layouts that are commonly used in Raman applications
Transition Width & Edge SteepnessDescribes how measurements for edge steepness and transition width differ
Journal Article
TopicDescription
Thin-Film Filters for Raman SpectroscopyTuran Erdogan, PhD, and Victor Mizrahi, PhD, Semrock Inc., Spectroscopy, December 2004
Describes the types and functions of filters commonly used in Raman spectroscopy
Application
TopicDescription
Raman SpectroscopyAn overview of Raman spectroscopy, including solutions from Semrock and additional learning resources.