Patent
1981-06-17
1984-04-17
Sikes, William L.
350354, G02F 111
Patent
active
044430663
ABSTRACT:
Apparatus for translating the position of a coherent beam of light using one or more acousto-optical cells. The beam is incident upon an acousto-optical cell through which acoustic waves of a selected frequency are propagating. These acoustic waves cause periodic variations in the refractive index of the cell which act to diffract and frequency shift the beam by amounts which are determined by the frequency of the acoustic wave. The once-diffracted beam is reflected back through the acosto-optical cell in the opposite direction, which causes a diffraction and frequency shift which are equal and opposite to the initial diffraction and frequency shift. By varying the frequency of the propagating waves, the final output beam of coherent light can be translated without a frequency shift. Also disclosed are a dual, identical Bragg cell embodiment for translating a light beam and dual Bragg cells having differing acoustic propagation velocities for deflecting a light beam.
REFERENCES:
patent: 3462603 (1969-08-01), Gordon
patent: 3544795 (1970-12-01), Korpel
patent: 4332441 (1982-06-01), Margolis
Agovino F. R.
Hazeltine Corporation
Jr. Leon Scott
Onders E. A.
Sikes William L.
LandOfFree
Acousto-optical apparatus for shifting a beam of light does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Acousto-optical apparatus for shifting a beam of light, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Acousto-optical apparatus for shifting a beam of light will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-92298