Abstract

A modified (frequency-shifted) Michelson interferometer uses a laser, an acoustooptic cell, and a movable mirror to produce a wide-band FM signal having a center frequency of 80 MHz. The basic concepts are reviewed, and a report of an operating system is given. The angle modulation scheme may be used to produce very wide-band FM or PM. Systems configurations are explored that allow several communication channels in a frequency-division multiplexing arrangement.

© 1979 Optical Society of America

Wide-band spectrum analysis with area modulation

Anthony Tai and F. T. S. Yu
Appl. Opt. 18(4) 460-463 (1979)

High sensitivity point monitoring of ozone, and high resolution spectroscopy of the ν₃ band of ozone using a tunable semiconductor diode laser

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