<title>The Use Of Solid Etalon Devices As Narrow Band Interference Filters</title>

For the past several years a group at Perkin-Elmer Corporation has been developing techniques for the manufac-ture of Solid Fabry-Perot Etalons. The etalons are suitable for use as very nar-row band-width isolating filters when combined with a conventional all-dielectric interference filter and some form of temperature stable environment.