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Proceedings Article

New holographic method for formation of 2D gratings in photorefractive materials by Bessel standing wave

[+] Author Affiliations
Anahit Badalyan, Ruben Hovsepyan, Vagram Mekhitaryan, Paytsar Mantashyan, Rafael Drampyan

Institute for Physical Research (Armenia)

Proc. SPIE 7996, Fundamentals of Laser-Assisted Micro- and Nanotechnologies 2010, 799611 (February 28, 2011); doi:10.1117/12.887249
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From Conference Volume 7996

  • Fundamentals of Laser-Assisted Micro- and Nanotechnologies 2010
  • Vadim P. Veiko; Tigran A. Vartanyan
  • St. Petersburg, Russian Federation | July 05, 2010

abstract

A counter-propagating Bessel beam technique is suggested and realized for creation of 2-dimensional (2D) holographic periodic structures (PS) in photorefractive materials. 2D PS formed by the suggested method is a combination of annular and planar gratings. The Bessel beam is formed by optical element - axicon. The recording of the gratings are performed by single mode He-Ne laser beam at 633 nm. The counter-propagating beam geometry builds up the Bessel standing wave with periodic annular structure in each anti-node. The refractive gratings are recorded in Z and Y-cut 2 mm thick Fe doped lithium niobate crystals via electro-optic effect. The read-out of 2D PS is performed by Gaussian and Bessel beams. Diffraction patterns in transmission and reflection are observed. The formed 2D PS have the halfwavelength standing wave period of ~300 nm in longitudinal direction, the period of ~10 μm in radial direction, and up to 10 % diffraction efficiency.

© (2010) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
Citation

Anahit Badalyan ; Ruben Hovsepyan ; Vagram Mekhitaryan ; Paytsar Mantashyan and Rafael Drampyan
"New holographic method for formation of 2D gratings in photorefractive materials by Bessel standing wave", Proc. SPIE 7996, Fundamentals of Laser-Assisted Micro- and Nanotechnologies 2010, 799611 (February 28, 2011); doi:10.1117/12.887249; http://dx.doi.org/10.1117/12.887249


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