The properties of bandpass filters for broadband photometry are reported in the 3–12-cm−1 frequency range. The filters are based on a combination of capacitive grids deposited on thick Mylar substrates and are designed to have very high out-of-band rejection. Low frequencies are blocked by a thick grill that consists of a hexagonal grid of circular holes in a thick metal plate.
© 1981 Optical Society of America
Original Manuscript: July 7, 1980
Published: April 15, 1981
T. Timusk and P. L. Richards, "Near millimeter wave bandpass filters," Appl. Opt. 20, 1355-1360 (1981)