Shaping of photorefractive two-wave coupling by fast phase modulation

KH Ringhofer, VP Kamenov, BI Sturman, A Chernykh - Physical Review E, 2000 - APS
Using the distinctive features of the photorefractive nonlinearity, we derive a general self-
consistent set of equations to describe two-wave coupling in the presence of fast and …

Dynamics of feedback controlled photorefractive beam coupling

EV Podivilov, BI Sturman, SG Odoulov, S Pavlyuk… - Physical Review A, 2001 - APS
We investigate theoretically and experimentally the operation of a nonlinear system,
feedback controlled photorefractive beam coupling. It is shown that the feedback equations …

Parametric extension of the classical exposure-schedule theory for angle-multiplexed photorefractive recording over wide angles

ML DeLong, BD Duncan, JH Parker - Applied optics, 1998 - opg.optica.org
The gradual reorientations in crystal geometry encountered during angle-multiplexed
holographic recording with obliquely incident recording beams can create significant …

Attractors and auto-oscillations for feedback controlled photorefractive beam coupling

EV Podivilov, BI Sturman, SG Odoulov, SL Pavlyuk… - Optics …, 2001 - Elsevier
We investigate the physics of a novel nonlinear system, feedback controlled photorefractive
beam coupling. Inertia of the electronic feedback is found to be an element crucial for …

Avoiding hologram bending in photorefractive crystals

AA Freschi, PM Garcia, I Rasnik, J Frejlich, K Buse - Optics letters, 1996 - opg.optica.org
Dynamic coupled-wave theory predicts the bending of recorded hologram phase planes in
most photorefractive crystals. Bent holograms occur in LiNbO_3 and other photovoltaic …

Coupling effects for counterpropagating light beams in lithium niobate crystals studied by grating translation technique for extremely high external electric fields

M Luennemann, K Buse, B Sturman - Journal of applied physics, 2003 - pubs.aip.org
The grating translation technique (GTT), which employs a momentary shift of light fringes
during holographic recording, is a powerful tool for characterization of nonlinear materials …

Approximate analytic solution of photochromic and photorefractive gratings in photorefractive materials

CH Kwak, SJ Lee - Optics communications, 2000 - Elsevier
We have developed an approximate analytic expression of two wave mixing for absorption
and phase gratings in photorefractive materials taking into account self-diffraction effect of …

采用紫外光提高双掺杂铌酸锂晶体中全息记录的灵敏度和光栅强度

戴翠霞, 刘立人, 刘德安, 柴志方, 周煜 - 光学学报, 2005 - cqvip.com
提出了一种在双掺杂铌酸锂晶体中用调制的双紫外光进行非挥发全息记录的方法.
与通常的用紫外光敏化的非挥发全息记录相比, 这种方法可以大幅度地提高光栅强度和记录 …

Regimes of feedback-controlled beam coupling

B Sturman, E Podivilov, M Gorkunov - … E—Statistical, Nonlinear, and Soft Matter …, 2005 - APS
The introduction of certain electronic feedback loops into photorefractive wave-coupling
schemes makes them noise free and leads to dramatic changes of the whole nonlinear …

Feedback-controlled two-wave coupling in reflection geometry: application to lithium niobate crystals subjected to extremely high external electric fields

M Gorkunov, B Sturman, M Luennemann, K Buse - Applied Physics B, 2003 - Springer
An active stabilization of photorefractive two-wave coupling by means of an electronic
feedback loop has been used extensively during recent years in transmission geometry. It …