Shearing interferometer employing an acousto-optic cell

Details Shearing interferometer employing an acousto-optic cell Shearing interferometer employing an acousto-optic cell

1983-12-19

1987-01-20

McGraw, Vincent P.

Optics: measuring and testing

By dispersed light spectroscopy

Utilizing a spectrometer

356354, G01B 902

Patent

active

046377247

ABSTRACT:
An improved shearing interferometer is provided having an acousto-optic cell wherein two sets of orthogonal diffraction gratings are formed therein by applying two electrical signals thereto having different frequencies. A wavefront to be examined is passed through the cell, and both signal frequencies applied to the cell are varied to cause the resulting shearing interferogram to be sequentially directed at a pair of orthogonal linear photodetector arrays. The degree of shear may be readily adjusted by changing the difference between the frequencies of the two signals applied to the cell.

REFERENCES:
patent: 3958863 (1976-05-01), Isaacs et al.
patent: 4093976 (1978-06-01), Das
patent: 4124300 (1978-11-01), Mead et al.
patent: 4474467 (1984-10-01), Hardy et al.
Ebersole et al. "Collimated Light Acoustooptic Lateral Shearing Interferometer", Applied Optics, vol. 13, No. 5, pp. 1004-1005.

Affiliated with

Also associated with

Rating

Shearing interferometer employing an acousto-optic cell does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Shearing interferometer employing an acousto-optic cell, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Shearing interferometer employing an acousto-optic cell will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2132439