Abstract

Observations of nonradial solar oscillations require Doppler velocity measurement at many points over the photosphere with a velocity resolution better than 1 m/s. An attractive form of imaging spectrophotometer for such a task utilizes a thin, solid, electrically tunable Fabry-Perot interference filter or etalon made of an electrooptic material such as lithium niobate (LiNbO₃). The problems to be overcome in producing such an etalon for an imaging spectrophotometer are discussed and practical solutions demonstrated on the basis of measurements made on prototype devices.

© 1987 Optical Society of America

Observing the solar corona with a tunable Fabry-Perot filter

Matthew W. Noble, David M. Rust, Pietro N. Bernasconi, Jay M. Pasachoff, Bryce A. Babcock, and Megan A. Bruck
Appl. Opt. 47(31) 5744-5749 (2008)

Single and tandem Fabry–Perot etalons as solar background filters for lidar

Jack A. McKay
Appl. Opt. 38(27) 5851-5858 (1999)

Double-cavity electrooptic Fabry-Perot tunable filter

William Gunning
Appl. Opt. 21(17) 3129-3131 (1982)

Lithium niobate double channel Fabry-Perot interferometer for solar corona uses

Domenico Bonaccini and Raymond N. Smartt
Appl. Opt. 27(24) 5095-5102 (1988)

Electrooptical Fabry-Perot Spectroscopy

Jean-Marie Gagné, Jacques Bures, and Normand Laberge
Appl. Opt. 12(8) 1894-1896 (1973)