The magneto-optical filter. I - Preliminary observations in Na D lines

Details The magneto-optical filter. I - Preliminary observations in Na D lines The magneto-optical filter. I - Preliminary observations in Na D lines

Oct 1975

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975soph...44..509a&link_type=abstract

Solar Physics, vol. 44, Oct. 1975, p. 509-518.

Physics

Optics

17

Bandpass Filters, D Lines, Magneto-Optics, Optical Filters, Polarized Light, Solar Spectra, Astronomical Photography, Faculae, Faraday Effect, Light Transmission, Zeeman Effect

Scientific paper

The article deals with the realization of a practical magneto-optical filter. The halfwidth of the filter passband, outside of which all radiation is eliminated except for wavelengths at which Na vapor alters polarization via magneto-optical effects, is about 80 milliangstrom units, and theoretical maximum transmission is 25%. Sodium vapor immersed in a magnetic field between two crossed polarizers produces the effect. Transmission spectra of laboratory targets and of the sun are displayed. The practicability of narrowing the passband still further is examined.

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