Notch Filters provide greater than 99.5% reflectivity at CWL.

Press Release Summary:



Offering 92% transmission from 350-2,000 nm, TECHSPEC® OD 6 Rugate Notch Filters are manufactured using single coating layer with continuous sinusoidally varying refractive index. Units feature low ripple of less than 5% and no harmonic reflections, making them suited for broad range of wavelengths. Mounted in black anodized aluminum ring for integration into optical systems, all models have 25 mm diameter, 2.54 mm thickness, and clear 22 mm aperture.



Original Press Release:



Edmund Optics® TECHSPEC® OD6 Rugate Notch Filters Provide Greater Than 99.5% Reflectivity at CWL



February 17, 2009, Barrington, N.J. Edmund Optics (EO), the premier provider of optical components and tools, introduces TECHSPEC® OD 6 Rugate Notch Filters. The filters provide excellent transmission for a broad range of wavelengths, offering an impressive 92% transmission from 350 to 2000 nm. These narrow band reflectors exhibit an OD>6 rejection for the center wavelength and greater than 99.5% reflectivity at the center wavelength.

Rugate technology offers superior filter performance

Edmund Optics' Rugate style notch filters are manufactured using a single coating layer with a continuous sinusoidally varying refractive index, which provides superior performance over standard notch filters, manufactured using a structure of multiple dielectric layers of alternating high and low refractive indexes. EO's rugate notch filters feature low ripple of less than 5% and no harmonic reflections, making them ideal for a broad range of wavelengths. Notch filters are used to reflect a specific laser wavelength, preventing damage to the optical system, while retaining a high level of visible or out-of-band transmission.

Available in three different center wavelength models

TECHSPEC OD 6 Rugate Notch Filters are available with a center wavelength (CWL) of 532 nm with a CWL tolerance of +5.3 nm and FWHM of 16 +2.7 nm. The 632 nm CWL filter has a CWL tolerance of +6.3 nm and FWHM of 19 +3.2 nm. The CWL 1064 nm filter has a CWL tolerance of +10.6 nm and FWHM of 41 +5.3 nm. All models have a 25 mm diameter, 2.54 mm thickness, a clear aperture of 22 mm and are mounted in a black-anodized aluminum ring for easy integration into optical systems.

About EO:

Edmund Optics® (EO) is a leading producer of optics, imaging, and photonics technology. Supporting the R&D, electronics, semiconductor, pharmaceutical, biomedical, and military markets around the globe; EO products are used in a variety of applications ranging from DNA sequencing to retinal eye scanning to high-speed factory automation. EO's state of the art manufacturing capabilities combined with its global distribution network has earned it the position of the world's largest supplier of off-the-shelf optical components. Customers can purchase items by contacting EO at 1-800-363-1992, via the catalog, or via the website at www.edmundoptics.com.

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