Accession Number : ADA297040

Title :   Ultra-Narrow Linefiltering Using a CS Faraday Filter at 455 nm.

Corporate Author : THERMO ELECTRON TECHNOLOGIES CORP SAN DIEGO CA

Personal Author(s) : Menders, J. ; Searcy, P. ; Roff, K. ; Bloom, S. H. ; Koevaar, Eric

PDF Url : ADA297040

Report Date : 1991

Pagination or Media Count : 36

Abstract : We measured and modelled the ultra narrowband transmission spectrum of a Cs Faraday filter at 455 nrn. When optimized to achieve the narrowest passbands, we observed near unity transmission peaks of 0.7 GHz bandwidth with an integrated transmission of about 3 0Hz. Using a filter model confirmed by. close agreement with the measurements, we present a catalog of filter spectra for a wide range of magnetic fields and vapor temperatures. We predicted a wide field of view for the filter using a generalization of the on axis model to three dimensions. The generalized model was confirmed experimentally by comparison to off axis spectrum measurements for the cesium passband near 852 nm. We devised a new ultranarrow magnetooptic line filter, which we call the Voigt filter, that uses a transverse magnetic field.

Descriptors :   *MAGNETOOPTICS, *BANDPASS FILTERS, TEMPERATURE, MAGNETIC FIELDS, INTEGRATED SYSTEMS, CESIUM, TRANSMITTANCE, RANGE(EXTREMES), FARADAY EFFECT, NARROWBAND, SPECTRAL LINES, TRANSVERSE, METAL VAPORS, ELECTRIC FILTERS.

Subject Categories : Electricity and Magnetism
      Atomic and Molecular Physics and Spectroscopy

Distribution Statement : APPROVED FOR PUBLIC RELEASE