Simple nonpolarizing high pass filter
Seeley, J.S. (1985) Simple nonpolarizing high pass filter. Applied Optics, 24 (6). pp. 742-744. ISSN 0003-6935
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To link to this article DOI: 10.1364/AO.24.000742
Nonpolarizing edge filters have recently becmoe important to separate those IR gas bands used in atmospheric sensing into their P and R branches, namely, the v2 of C02 at a 15µm wavelength. Whereas Thelen has developed all necessary principles for the entire class of nonpolarizing filters it remains difficult to subsittute ither refractive indices (such as infrared) into a visible-region design or assess the effect on consequent performance.
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