Opto-optical light deflection
Applied Optics, Vol. 22, Issue 5, pp. 690-697 (1983)
http://dx.doi.org/10.1364/AO.22.000690
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Abstract
Light deflection is accomplished by diffraction from a transient index modulation established as a grating of variable frequency in an optical material by the interference of two controlling light beams. This device may be considered an opto-optical analog to an acoustooptical deflector, in that a change in angular deflection is created by altering the frequency of the diffraction grating. In this paper we report on a technique for altering the grating frequency by changing the wavelength of the control beams and the use of a novel optical system to maintain the Bragg condition over a wide range of frequencies. Configurations exhibiting very large angular deflections have been designed using a computer simulation and optimization program that allows minimization of the Bragg detuning. This new method of light deflection allows either discrete or continuous light scanning or modulation. A particular example using lithium niobate will be discussed which produces an 11.8° deflection from a 0.027-µm wavelength change and with an angular detuning of less than ±0.03°. The use of other materials, inorganic, organic, and dispersive, will also be discussed.
© 1983 Optical Society of America
Citation
Glenn T. Sincerbox and Gerald Roosen, "Opto-optical light deflection," Appl. Opt. 22, 690-697 (1983)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-22-5-690
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