Introduction to Photorefractive Materials

1987 ◽  
pp. 206-228 ◽  
Author(s):  
P. Günter ◽  
H. J. Eichler
Keyword(s):  
Photorefractive Materials

scholarly journals Nondegenerate Bright Solitons in Coupled Nonlinear Schrödinger Systems: Recent Developments on Optical Vector Solitons

Photonics ◽  
2021 ◽  
Vol 8 (7) ◽  
pp. 258
Author(s):  
S. Stalin ◽  
R. Ramakrishnan ◽  
M. Lakshmanan
Keyword(s):  
Propagation Constant ◽  
Short Wave ◽  
Nonlinear Phenomena ◽  
Bilinear Method ◽  
Nonlinear Schrödinger ◽  
Bright Solitons ◽  
Nonlinear Schrödinger Systems ◽  
Recent Developments ◽  
Potential Applications ◽  
Photorefractive Materials

Nonlinear dynamics of an optical pulse or a beam continue to be one of the active areas of research in the field of optical solitons. Especially, in multi-mode fibers or fiber arrays and photorefractive materials, the vector solitons display rich nonlinear phenomena. Due to their fascinating and intriguing novel properties, the theory of optical vector solitons has been developed considerably both from theoretical and experimental points of view leading to soliton-based promising potential applications. Mathematically, the dynamics of vector solitons can be understood from the framework of the coupled nonlinear Schrödinger (CNLS) family of equations. In the recent past, many types of vector solitons have been identified both in the integrable and non-integrable CNLS framework. In this article, we review some of the recent progress in understanding the dynamics of the so called nondegenerate vector bright solitons in nonlinear optics, where the fundamental soliton can have more than one propagation constant. We address this theme by considering the integrable two coupled nonlinear Schrödinger family of equations, namely the Manakov system, mixed 2-CNLS system (or focusing-defocusing CNLS system), coherently coupled nonlinear Schrödinger (CCNLS) system, generalized coupled nonlinear Schrödinger (GCNLS) system and two-component long-wave short-wave resonance interaction (LSRI) system. In these models, we discuss the existence of nondegenerate vector solitons and their associated novel multi-hump geometrical profile nature by deriving their analytical forms through the Hirota bilinear method. Then we reveal the novel collision properties of the nondegenerate solitons in the Manakov system as an example. The asymptotic analysis shows that the nondegenerate solitons, in general, undergo three types of elastic collisions without any energy redistribution among the modes. Furthermore, we show that the energy sharing collision exhibiting vector solitons arises as a special case of the newly reported nondegenerate vector solitons. Finally, we point out the possible further developments in this subject and potential applications.

Effect of random volume scattering on image amplification and beam fanning in photorefractive materials

1998 ◽  
Vol 15 (7) ◽  
pp. 1889 ◽  
Author(s):  
Ping Xie ◽  
Peng-Ye Wang ◽  
Jian-Hua Dai ◽  
Hong-jun Zhang
Keyword(s):  
Volume Scattering ◽  
Photorefractive Materials ◽  
Image Amplification

Effect of partial coherence on four-wave mixing in photorefractive materials via reflection grating approximation

2001 ◽  
Vol 72 (3) ◽  
pp. 317-322
Author(s):  
J. Zhao ◽  
X. Yi ◽  
X. Shen ◽  
R. Wang ◽  
P. Yeh
Keyword(s):  
Four Wave Mixing ◽  
Partial Coherence ◽  
Wave Mixing ◽  
Photorefractive Materials ◽  
Reflection Grating

Structure of viologens and novel photorefractive materials on their base

2001 ◽  
Author(s):  
Andrey Y. Vishnyakov ◽  
A. P. Polishchuk ◽  
I. Y. Polishchuk
Keyword(s):  
Photorefractive Materials

Influence of the Charge Transport Characteristics on the Holographic Response of Organic Photorefractive Materials

2001 ◽  
Vol 358 (1) ◽  
pp. 15-22
Author(s):  
Stephan J. Zilker ◽  
Uwe Hofmann ◽  
André Leopold ◽  
Michael Grasruck ◽  
Christoph Hohle ◽  
...  
Keyword(s):  
Charge Transport ◽  
Photorefractive Materials
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