Effect of temperature on the self-deflection of two-photon bright screening photovoltaic solitons

JIANG Qi-chang; SU Yan-li; JI Xuan-mang

doi:10.3969/j.issn.1001-3806.2010.04.031

Effect of temperature on the dynamical evolution and self-deflection characteristics of bright screening photovoltaic spatial solitons in two-photon photovoltaic photorefractive media was investigated.Taking the bright solitons as the input solitary beam,numerically solving the beam propagation equation,it was found that the intensity profile and the full-width at half maximum of bright screening photovoltaic spatial solitons decreased with the raising of the temperature in a certain range of temperature.When the temperature of crystals changed in a small range,the stability of solitons could be persisted by overcoming the small perturbation.Solitons would become unstable or collapse when the crystal changed in a large range.The results show that the bending distance of the bright solitary beam centre increases with temperature rise,then reaches its maximum value at a specific temperature,and after that,decreases as temperature continuously rises.All of these results are benefit for the development of theory of two-photon spatial solitons.

Effect of temperature on the self-deflection of two-photon bright screening photovoltaic solitons

1. Department of Physics and Electronics Engineering, Yuncheng University, Yuncheng 044000, China

Received Date: 2009-09-21

Accepted Date: 2009-10-22

Available Online: 2010-07-25

Abstract: Effect of temperature on the dynamical evolution and self-deflection characteristics of bright screening photovoltaic spatial solitons in two-photon photovoltaic photorefractive media was investigated.Taking the bright solitons as the input solitary beam,numerically solving the beam propagation equation,it was found that the intensity profile and the full-width at half maximum of bright screening photovoltaic spatial solitons decreased with the raising of the temperature in a certain range of temperature.When the temperature of crystals changed in a small range,the stability of solitons could be persisted by overcoming the small perturbation.Solitons would become unstable or collapse when the crystal changed in a large range.The results show that the bending distance of the bright solitary beam centre increases with temperature rise,then reaches its maximum value at a specific temperature,and after that,decreases as temperature continuously rises.All of these results are benefit for the development of theory of two-photon spatial solitons.

HTML

Reference (17)

[1]	SEGEV M,CROSIGNANI B,YARIV A,et al.Spatial solitons in photorefractive media[J].Phys Rev Lett,1992,68(7):923-926.
[2]	DUREE G C,SCHULTZ J L,SALAMO G J,et al.Observation of self-trapping of an optical beam due to the photorefractive effect[J].Phys Rev Lett,1993,71(4):533-536.
[3]	SEGEV M,VALLEY G C,CROSIGNANI B,et al.Steady-state spatial screening solitons in photorefractive materials with external applied field[J].Phys Rev Lett,1994,73(24):3211-3214.
[4]	SHIH M F,SEGEV M,VALLEY G C,et al.Observation of two-dimensional steady-state photorefractive screening solitons[J].Electron Lett,1995,31(10):826-827.
[5]	VALLEY G C,SEGEV M,CROSIGHANI B,et al.Dark and right photovoltaic solitons[J].Phys Rev,1994,A50(14):4457-4460.
[6]	TAYA M,BASHAW M C,FEJER M M,et al.Observation of dark photovoltaic spatial solitons[J].Phys Rev,1995,A52(4):3095-3100.
[7]	LIU J S,LU K Q.Screening-photovoltaic spatial solitons in biased photovoltaic photorefractive crystals and their self-deflection[J].J O S A,1999,B16(4):550-555.
[8]	FAZIO E,RENZI F,RINALDI R,et al.Screening-photovoltaic bright solitons in lithium niobate and associated single-mode waveguides[J].A P L,2004,85(12):2193-2195.
[9]	CASTRO-CAMUS E,MAGANA L F.Prediction of the physical response for the two-photon photorefractive effect[J].Opt Lett,2003,28(13):1129-1131.
[10]	HOU Ch F,PEI Y,ZHOU Z X,et al.Spatial solitons in two-photon photorefractive media[J].Phys Rev,2005,A71(5):053817.
[11]	HOU Ch F,ZHANG Y,JIANG Y Y,et al.Photovoltaic solitons in two-photon photorefractive materials under open-circuit conditions[J] Opt Commun,2007,273(2):544-548.
[12]	ZHANG Y,HOU Ch F,SUN X D.Grey spatial solitons due to two-photon photorefractive effect[J].Chinese Physics,2007,16(1):159-164.
[13]	LU K Q,ZHAO W,YANG Y L,et al.One-dimensional incoherently coupled grey solitons in two-photon photorefractive media[J].Appl Phys,2007,B87(3):469-473.
[14]	ZHANG G Y,LIU J S.Screening-photovoltaic spatial solitons in biased two-photon photovoltaic photorefractive crystals[J].J O S A,2009,B26(1):113-120.
[15]	CARVALHO M I,SINGH S R,CHRISTODOULIDES D N.Self-deflection of steady-state bright spatial solitons in biased photorefractive crystals[J].Opt Commun,1995,120(5/6):311-315.
[16]	CHENG L J,PARTOVI A.Temperature and intensity dependence of photorefractive effect in GaAs[J].A P L,1986,49(21):1456-1458.
[17]	JI X M,XIE S J,WANG J L,et al.Effect of temperature on the dynamic evolution of Gaussian beam in biased photovoltaic-photorefractive crystal[J].Laser Technology,2009,33(1):97-99(in Chinese).

Effect of temperature on the self-deflection of two-photon bright screening photovoltaic solitons

Abstract

References

Proportional views

通讯作者: 陈斌, bchen63@163.com

Proportional views