Optical wavefront measurement and/or modification using integrated optics

Sensors consisting of an array of interferometers to measure phase differences and straight waveguides to measure intensity along an optical wavefront have been fabricated in LiNbO/sub 3/ at four wavelengths, lambda =0.458, 0.514, 0.82, and 3.39 mu m, and the performance of the sensors has been eval...

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Bibliographic Details
Published in:Journal of lightwave technology 1988-06, Vol.6 (6), p.916-932
Main Authors: Rediker, R.H., Lind, T.A., Burke, B.E.
Format: Article
Language:English
Subjects:
Exact sciences and technology
Instruments, apparatus, components and techniques common to several branches of physics and astronomy
Integrated optics
Interferometers
Optical arrays
Optical instruments, equipment and techniques
Optical interferometry
Optical sensors
Optical waveguides
Phase measurement
Phased arrays
Physics
Sensor arrays
Wavelength measurement
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Summary:Sensors consisting of an array of interferometers to measure phase differences and straight waveguides to measure intensity along an optical wavefront have been fabricated in LiNbO/sub 3/ at four wavelengths, lambda =0.458, 0.514, 0.82, and 3.39 mu m, and the performance of the sensors has been evaluated. The outputs of the arrays are coupled to an imaging CCD and fed into a computer. Calculations are presented for a conceptual design of a scanning one-dimensional array producing a 50*50 pixel snapshot. Experimental results are presented for 20-resolution-element one-dimensional interferometer arrays at 0.514, 0.82, and 3.39 mu m. The results indicate that accurate modification of wavefronts as well as measurements of wavefronts are possible. Two structures for modification of optical wavefronts are proposed.< >
ISSN:0733-8724
1558-2213
DOI:10.1109/50.4083