Optical actuators based on photorefractive materials controlled by holographic gratings

Aisha Fields; Michael J. Curley; Sergey S. Sarkisov; Nickolai V. Kukhtarev; Mykola B. Kulishov; Grigory Adamovsky; Cydale C. Smith; Lewis E. Moore

doi:10.1117/12.450426

13 December 2001 Optical actuators based on photorefractive materials controlled by holographic gratings

Aisha Fields, Michael J. Curley, Sergey S. Sarkisov, Nickolai V. Kukhtarev, Mykola B. Kulishov, Grigory Adamovsky, Cydale C. Smith, Lewis E. Moore

Author Affiliations +

Proceedings Volume 4455, Micro- and Nano-optics for Optical Interconnection and Information Processing; (2001) https://doi.org/10.1117/12.450426
Event: International Symposium on Optical Science and Technology, 2001, San Diego, CA, United States

Abstract

All-optical actuators based on static or moving holographic gratings could have an advantage over current actuators because of their smaller size, less power and less RF interference. Instead of an ultrasonic wave produced by an electrically driven piezoelectric actuator as in ultrasonic motors, the wave resulted from mechanical deformation of the crystal caused by photo-generated electric charge distribution due to the converse piezoelectric effect. The charge distribution was periodical since it was produced by a holographic grating generated by two interfering coherent laser beams. Surface gratings associated with holographic volume gratings in photorefractive crystals of iron-doped lithium niobate have been studied using diffraction of a reflected probe beam and high-resolution phase-shifted interferometric profilometry. Both techniques show that the surface gratings do in fact exist in the form of periodical corrugations of the same period as that of the volume grating. The maximum amplitude of the surface grating measured by both techniques was close to 6.5 nm. We also demonstrated that the periodical electric forces on the surface were capable of assembling polystyrene microspheres along the fringes of the grating.

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Aisha Fields, Michael J. Curley, Sergey S. Sarkisov, Nickolai V. Kukhtarev, Mykola B. Kulishov, Grigory Adamovsky, Cydale C. Smith, and Lewis E. Moore "Optical actuators based on photorefractive materials controlled by holographic gratings", Proc. SPIE 4455, Micro- and Nano-optics for Optical Interconnection and Information Processing, (13 December 2001); https://doi.org/10.1117/12.450426

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