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Proceedings Paper

New mutually pumped phase conjugation with a rainbow configuration in BaTiO3:Ce crystal
Author(s): Huitian Wang; Nobukazu Yoshikawa; Shin Yoshikado; Tadashi Aruga
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Paper Abstract

A new configuration of mutually pumped phase conjugation was experimentally demonstrated using two nanosecond pulsed beams in BaTiO3:Ce crystal, in which the beams travel in a geometrical path similar to the shape of a rainbow, so we refer to this as rainbow-shaped mutually pumped phase conjugation. In this configuration the two mutually incoherent pulsed beams were incident upon the +c-face to form a coupling channel without internal reflections at crystal surfaces. The highest phase conjugate reflectivity was about 24% when two incident beams have the same intensity and highest spatial resolution was 7.12 lines/mm. The dependence of the phase conjugate reflectivity on the incident angle and distance, and the grating formation time have been investigated. The photorefractive response time to the incident intensity had a sublinear dependence with a factor of 0.7776. Additionally, we estimated also the coupling strength and the interconnecting factor between two beams to be 4.512 and 0.3242, respectively.

Paper Details

Date Published: 30 September 1996
PDF: 9 pages
Proc. SPIE 2896, Photorefractive Materials, (30 September 1996); doi: 10.1117/12.253225
Show Author Affiliations
Huitian Wang, Ministry of Posts and Telecommunications (Japan)
Nobukazu Yoshikawa, Ministry of Posts and Telecommunications (Japan)
Shin Yoshikado, Ministry of Posts and Telecommunications (Japan)
Tadashi Aruga, Ministry of Posts and Telecommunications (Japan)

Published in SPIE Proceedings Vol. 2896:
Photorefractive Materials
Ratnakar R. Neurgaonkar; Tsutomu Shimura; Peixian Ye, Editor(s)

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