This book highlights recent advances of optical spatial solitons in photorefractive materials ranging broadly from the coupling, modulation instability, effect of pyroelectricity, and the stability of photorefractive solitons, among other topics. Photorefractive solitons have been at the forefront of research because of their formation at low laser powers and unique saturable nonlinearity present in photorefractive materials which supports solitons in (2+1) D. There has been a spurt in research on photorefractive solitons recently, which has contributed to a greater understanding of the theoretical foundation of photorefractive solitons as also of their various interesting and practical applications. The book elucidates the diversity of photorefractive solitons and provides a good resource for students, researchers, and professionals in the area of nonlinear optics.

Autorentext

Ritesh K. Chourasia earned his Master's in Physics (Specialization: Electronics) and Ph.D. from the Institute of Science, Banaras Hindu University (Varanasi, India). His doctoral research work was on Bragg fiber's mathematical modeling, simulation, and exploration of their optical properties in various applications. He qualified for the highly competitive exam CSIR-JRF (Junior Research Fellow) in Physical Sciences to obtain a national fellowship for his Ph.D. and eligibility required for permanent faculty in India. He has also qualified for UGC-NET in Electronic Sciences, an international examination GATE-Physics, and JEST-Physics. He joined as Assistant Professor (Permanent) at Lalit Narayan Mithila University, Darbhanga-846004, in 2017, and presently he is working as Head, Post-Graduate Department of Physics, Samastipur College, Samastipur-848134 (A Constituent College of L.N. Mithila University, Darbhanga, 846004). He has published numerous quality research papers, review articles, and book chapters in international journals and publishers of repute. He has also two granted Indian patents on Bragg fibers. He is currently supervising four Ph.D. students and also has supervised numerous Master's dissertations. He has also served as guest editor and is involved in the Editorial board of many indexed journals. Currently, his prime research interest is non-linear aspects of Bragg fibers, Bragg fiber gratings, and photonic crystals. Aavishkar Katti earned his Bachelor's and Master's degrees in Physics with a specialization in optics and spectroscopy from the University of Delhi (Delhi, India). He then completed his Ph.D. from the Banaras Hindu University (Varanasi, India). His doctoral research work was on optical solitons in nonlinear optical materials. He has qualified for the intensely competitive National Eligibility Test required for a teaching position in India. He has been associated with Banasthali Vidyapith and now MIT World Peace University as Assistant Professor of Physics. His areas of interest include nonlinear optics and nonlinear dynamics. He has published in many reputed and indexed journals and has a track record of robust independent research. He has supervised many Masters's and Doctoral students. He has published a research monograph on Optical Solitons previously while he also has edited books to his credit. He has served as guest editor and is on editorial board of reputed and indexed journals. In recognition of his research, he has been awarded with research grants from the Govt. of India, including the prestigious Core Research Grant.

Inhalt
Introduction to Photorefractive Solitons.- Photovoltaic and Pyroelectric Solitons.- Stability Analysis and Dynamical Evolution.- Formation of Photorefractive Solitons.- Coupling of Solitons.- Photorefractive Crystal Circuits.- Solitons in Photorefractive Waveguides. <p