Narrowband ultraviolet vapor filter

A narrowband optical vapor filter based on the principle of selective specular reflection from vapors is described. The device consists of a mercury vapor cell with Brewster angle windows that selectively reflects the 2537-A line and transmits other radiation. The bandwidth of the device varies from...

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Bibliographic Details
Published in:Applied optics (2004) 1975-01, Vol.14 (1), p.238-244
Main Author: Senitzky, B
Format: Article
Language:English
Online Access:Get full text
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Summary:A narrowband optical vapor filter based on the principle of selective specular reflection from vapors is described. The device consists of a mercury vapor cell with Brewster angle windows that selectively reflects the 2537-A line and transmits other radiation. The bandwidth of the device varies from 0.1 A to 1.0 A as a function of the mercury vapor pressure. Its signal-to-skirt rejection ratio at an acceptance angle of 7 degrees is 28 dB, and its acceptance area is 1 cm(2). It is used to perform a spectrochemical analysis of mercury in water and also to take a monochromatic photograph of the spatial distribution of excited mercury atoms in a flame.
ISSN:1559-128X
DOI:10.1364/AO.14.000238