Incoherently coupled screening-photovoltaic spatial soliton pairs in two-photon photorefractive media

JI Xuan-mang; JIANG Qi-chang; LIU Jin-song

doi:10.3969/j.issn.1001-3806.2010.02.016

In order to prove that there are steady-sate incoherent coupled screening-photovoltaic soliton pairs in biased two-photon photovoltaic photorefractive crystals under steady-state conditions,the coupling of two incoherent optical beams with the same polarization and wavelength in two-photon photovoltaic photorefractive crystals is theoretically studied.The result shows that these soliton pairs are established by the incoherent solitary beams with the same polarization and wavelength. The screening-photovoltaic soliton pairs can be considered as the united form of screening soliton pairs and closed-circuit photovoltaic soliton pairs.They reduce to screening soliton pairs in the absence of photovoltaic effect, whereas they become photovoltaic soliton pairs under the closed circuit condition when the bias field is not applied.It is shown that incoherently coupled dark-dark and bright-bright screening-photovoltaic soliton pairs are possible due to two-photon photorefractive effect.

Incoherently coupled screening-photovoltaic spatial soliton pairs in two-photon photorefractive media

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

2. College of Optoelectronic Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China

Received Date: 2009-02-12

Accepted Date: 2009-04-10

Available Online: 2010-03-25

Abstract: In order to prove that there are steady-sate incoherent coupled screening-photovoltaic soliton pairs in biased two-photon photovoltaic photorefractive crystals under steady-state conditions,the coupling of two incoherent optical beams with the same polarization and wavelength in two-photon photovoltaic photorefractive crystals is theoretically studied.The result shows that these soliton pairs are established by the incoherent solitary beams with the same polarization and wavelength. The screening-photovoltaic soliton pairs can be considered as the united form of screening soliton pairs and closed-circuit photovoltaic soliton pairs.They reduce to screening soliton pairs in the absence of photovoltaic effect, whereas they become photovoltaic soliton pairs under the closed circuit condition when the bias field is not applied.It is shown that incoherently coupled dark-dark and bright-bright screening-photovoltaic soliton pairs are possible due to two-photon photorefractive effect.

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Reference (15)

[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,SHULTZ 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]	CHRISTODOULIDES D N,CARVALHO M I.Bright,dark and gray spatial soliton states in photorefvactive media[J].J O S A,1995,B12(9):1628-1633.
[4]	SEGEV M,VALLEY G C,BASHAW M C,et al.Photovoltaic spatial solitons[J].J O S A,1997,B14(7):1772-1781.
[5]	ZHANG G Y,LIU J S.Self-deflection characteristics of dark photovoltaic spatial solitons in closed circuit[J].Acta Optica Sinica,2006,26(10):1559-1561(in Chinese).
[6]	LIU J S,LU K Q.Spatial solitaire wave in biased photovoltaic-photorefractive crystals[J].Acta Physica Sinica,1998,47(9):1509-1515(in Chinese).
[7]	LIU J S,LU K Q.Screening-photorefractive spatial solitons in biased photovoltaic-photorefractive crystals and their self-deflection.[J].J O S A,1999,B16(4):550-555.
[8]	HOU Ch F,YUAN B H,SUN X D.Incoherently coupled screening-photovoltaic soltion pairs[J].Acta Physica Sinica,2004,49(10):1969-1971(in Chinese).
[9]	JI X M,WAN J L,LIU J S,et al.The temperature dependence of incoherently coupled bright-dark screening photovoltaic solution pairs[J].Laser Technology,2004,28(4):386-389(in Chinese).
[10]	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.
[11]	HOU Ch F,PEI Y B,ZHOU Z X,et al.Spatial solitons in two-photon photorefractive media[J].Phys Rev,2005,A71(5):053817/1-053817/6.
[12]	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.
[13]	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(in Chinese).
[14]	ZHANG Y,HOU Ch F,SUN X D.Incoherently coupled spatial soliton pairs in two-photon photorefractive media[J].Acta Physica Sinica,2007,56(6):3261-3265(in Chinese).
[15]	ZHANG G Y,LIU J S.Screening-photovoltaic spatial solitons in biased two-photo photovoltaic photorefractive crystals[J].J O S A,2009,B26(1):113-120.

Incoherently coupled screening-photovoltaic spatial soliton pairs in two-photon photorefractive media

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