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Proceedings Paper

All optical control of self-pumped phase conjugation from BaTiO3:Co photorefractive crystal
Author(s): Yoshihiro Koizumi; Go Urushibata; Minoru Obara
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Paper Abstract

We investigate self-pumped phase conjugation (SPPC) generation process and its temporal instability, to demonstrate an all optical control of SPPC output. The optical configuration region at which stable SPPC output is obtainable by effective stimulated photorefractive backscattering-four wave mixing (SPB-FWM) process is limited. Therefore, with non-optimized optical configuration, cat conjugation occurs together with SPB-FWM and then SPPC output becomes temporally unstable. The same is the case with even when the optical configuration is fixed as SPB-FWM interaction length becomes longer. We discus the cause of temporal instability to propose the beam trajectory model when interaction length becomes longer. We discus the usage of temporal instability to propose the beam trajectory model when SPPC output is unstable, based on the experimental result using a new method inducing the control beam whose wavelength is different from the incident beam simultaneously. Moreover, using the method mentioned previously, we demonstrate an all optical control of SPPC output and the generation of temporally stable SPPC output with the optical configuration that SPPC output has been temporally unstable in the conventional methods. Extending the generation region of stable SPPC output will lead to the generation of SPPC from high power lasers in simple system. Moreover, it will also contribute to the realization of all optical image processing and computing, for example, multiple parallel image subtraction and addition.

Paper Details

Date Published: 15 May 2001
PDF: 10 pages
Proc. SPIE 4277, Integrated Optics Devices V, (15 May 2001); doi: 10.1117/12.426792
Show Author Affiliations
Yoshihiro Koizumi, Keio Univ. (Japan)
Go Urushibata, Keio Univ. (Japan)
Minoru Obara, Keio Univ. (Japan)


Published in SPIE Proceedings Vol. 4277:
Integrated Optics Devices V
Giancarlo C. Righini; Seppo Honkanen, Editor(s)

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