Abstract

A technique is described for obtaining a linear readout of fringe shift from a high resolution Fabry-Perot interferometer. One mirror of the interferometer is mounted on a piezoelectric crystal driven by a high frequency sinusoidal voltage. A signal proportional to the mirror displacement is displayed on the Y axis of an oscilloscope, while the X axis is swept with time. Each time the interferometer passes through a transmission maximum, a pulse is produced which is fed to the Z axis of the oscilloscope, producing an intensified dot. The displacement of the resultant row of dots from its ambient position is linearly proportional to the fringe shift occurring within the interferometer, has no sign of ambiguity, and is independent of the finesse. All the circuits required for producing the readout were realized using the internal circuitry of a standard laboratory oscilloscope.

© 1978 Optical Society of America

Pressure-scanned three-pass Fabry-Perot interferometer

L. N. Durvasula and Robert W. Gammon
Appl. Opt. 17(20) 3298-3303 (1978)

A High Resolution Scanning Confocal Interferometer

J. R. Johnson
Appl. Opt. 7(6) 1061-1072 (1968)

Interferometer-grating spectrograph for high resolution astronomical spectroscopy in the middle uv

B. Bates, D. J. McCartney, C. D. McKeith, A. McQuoid, and O. E. Sproule
Appl. Opt. 17(13) 2119-2124 (1978)

High resolution Fourier transform spectrometer (0.005 cm⁻¹) for the 0.6–100-μm spectral range

A. A. Balashov, V. S. Bukreev, N. G. Kultepin, I. N. Nesteruk, E. B. Perminov, V. A. Vagin, and G. N. Zhizhin
Appl. Opt. 17(11) 1716-1722 (1978)

Interferometric measurement technique for the temperature field of axisymmetric buoyant phenomena

Raymond L. Boxman and D. J. Shlien
Appl. Opt. 17(17) 2788-2793 (1978)