514.5 US SPF Iridian Short Edge Ultra Steep Filter for Spectroscopy
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- Model: Iridian 514.5 US SPF S
Edge Pass, Short Edge Ultra Steep Filter for Spectroscopic applications
514.5 US SPF
Iridian Ultra Steep Edge Pass filters deliver superior performance in spectroscopy experiments.
Designed to isolate one band of wavelengths from another by reflection or transmission, these filters are used to separate the excitation source wavelength from the emission wavelengths in Raman spectroscopy.
This short pass filter has a sharper transition compared to standard edge pass filters thanks to the ultra-steep curve. It blocks wavelengths higher than the specified edge wavelength, and transmits wavelengths lower than the edge wavelength down to a minimum. The pass band from the edge wavelength to the minimum wavelength has a low ripple to meet the demanding requirements of spectroscopy instruments.
The high blocking of these edge filters improves spectral noise reduction by eliminating the need for additional filtering, and the hard dielectric coatings do not require cover glasses for durability thus greatly improving transmission levels compared to traditional filters.
Laser Line (nm) | 514.5 |
Blocking Level (OD) | > 6 |
Cut Off (cm-1) | 70 |
Cut Off (%) | 0.5 |
Pass Band (nm) | 350 – 512 |
Pass Band Level (%) | 90 avg. |
Angle of Incidence | 0° |
Outer Diameter of ½" or 1" optics (mm) | 12.5 +0/-0.1 or 25 +0/-0.2 |
Clear Aperture of ½" or 1" optics (mm) | 8 or 21 |
Thickness (mm) | 3 ±0.1 |
Ring mounted | Yes |
Ring Thickness (mm) | 5 ±0.1 |
Scratch / Dig | 60/40 |
About Edge Filters for Raman Spectroscopy Download PDF
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