Abstract

The interferometer of the Fourier transform spectrometer at the University of Oulu has been modified so that the maximum instrumental resolution is better than 10−3 cm−1. The resolution of the previous interferometer was 4.5 × 10−3 cm−1. The present interferometer consists of large cube corner mirrors and a large Mylar beam splitter. Each corner mirror has been made with three flat mirrors on an adjustable supporting frame. The interferometer was already in practical use in 1985. The first spectra (H2O, CO2, N2O, OCS) recorded on this interferometer have been presented in HANDBOOK OF INFRARED STANDARDS WITH SPECTRAL MAPS AND TRANSITION ASSIGNMENTS BETWEEN 3 AND 2600 μm, G. Guelachvili and K. Narahari Rao, Eds. (Academic, New York, 1986).

© 1991 Optical Society of America

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