Experimental investigation of the relationship between photorefractive and two-beam coupling response times

Quantitative dependences of two-beam coupling and hologram buildup time constants normalized by the photorefractive response time on a beam coupling gain and a pump-to-probe intensity ratio are investigated experimentally. We show that these normalized time constants increase with an increase of the...

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Bibliographic Details
Published in:Optics communications 1996-07, Vol.128 (4), p.287-291
Main Authors: Matsushima, Shun-suke, Tomita, Yasuo
Format: Article
Language:English
Subjects:
Exact sciences and technology
Fundamental areas of phenomenology (including applications)
Nonlinear optics
Optical materials
Optics
Other nonlinear optical materials
photorefractive and semiconductor materials
Phase conjugation, optical mixing, and photorefractive effect
Phase conjugation, optical mixing
photorefractive and kerr effects
Physics
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Summary:Quantitative dependences of two-beam coupling and hologram buildup time constants normalized by the photorefractive response time on a beam coupling gain and a pump-to-probe intensity ratio are investigated experimentally. We show that these normalized time constants increase with an increase of the beam coupling gain when the pump depletion can be negligible. However, they decrease and can be comparable to or less than unity in the strongly depleted pump regime. Numerical simulations also support these experimental results.
ISSN:0030-4018
1873-0310
DOI:10.1016/0030-4018(96)00256-8