Effect of the o-polarized irradiation on the screening-photovoltaic photorefractive spatial solitons

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

doi:10.3969/j.issn.1001-806.2012.04.004

In order to study effect of the o-polarized irradiation on the screening-photovoltaic spatial solitons,the theory of screening-photovoltaic spatial solitons was established based on the one-photon photorefractive effect.The optical circuit includes a divider resistance and an o-polarized uniform background beam.The numerical results show that the dark solitons can be obtained for the proper values of biased field and photovoltaic field and the bright solitons can also be obtained by only changing the value of effective glass coefficient between o-background beam and soliton beam while the other parameters remain unchanged.The intensity full width at half maximum(FWHM)of solitons increases with the increase of the ratio of the o-background beam intensity to the dark-irradiation intensity.Similarly,the FWHM of solitons will also increase with the ratio of cross section of the o-background beam to that of the soliton beam.The paper gives a new scheme of the transformation of a dark soliton into a bright soliton in photorefractive crystal.

Effect of the o-polarized irradiation on the screening-photovoltaic photorefractive spatial solitons

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: 2011-12-01

Accepted Date: 2011-12-12

Available Online: 2012-07-25

Abstract: In order to study effect of the o-polarized irradiation on the screening-photovoltaic spatial solitons,the theory of screening-photovoltaic spatial solitons was established based on the one-photon photorefractive effect.The optical circuit includes a divider resistance and an o-polarized uniform background beam.The numerical results show that the dark solitons can be obtained for the proper values of biased field and photovoltaic field and the bright solitons can also be obtained by only changing the value of effective glass coefficient between o-background beam and soliton beam while the other parameters remain unchanged.The intensity full width at half maximum(FWHM)of solitons increases with the increase of the ratio of the o-background beam intensity to the dark-irradiation intensity.Similarly,the FWHM of solitons will also increase with the ratio of cross section of the o-background beam to that of the soliton beam.The paper gives a new scheme of the transformation of a dark soliton into a bright soliton in photorefractive crystal.

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Reference (17)

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Effect of the o-polarized irradiation on the screening-photovoltaic photorefractive spatial solitons

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