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One-dimensional steady-state bright photovoltaic solitons in LiNbO3:Fe crystal with background illumination |
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| Authors: | Meizhi Zhang Keqing Lu Yiqi Zhang Kehao Li Lei Zhang Yanpeng Zhang |
| Affiliation: | a State Key Laboratory of Transient Optics and Photonics, Xi’an Institute of Optics and Precision Mechanics, Chinese Academic of Sciences, Xi’an 710119, China b Graduate school of Chinese Academic of Science, Beijing 100039, China c Key Laboratory for Physical Electronics and Devices of the Ministry of Education, Xi’an Jiaotong University, Xi’an 710049, China |
| Abstract: | We investigate theoretically and experimentally one-dimensional bright photovoltaic solitons in LiNbO3:Fe crystal by use of the background illumination. We find that, in LiNbO3:Fe crystal, bright photovoltaic solitons can be obtained with background illumination for κ>1, where κ is the ratio of the background illumination photovoltaic constant to the soliton optical beam's photovoltaic constant. For κ<1, dark photovoltaic solitons are generated. On the other hand, our experiments show good agreement with theoretical prediction for the soliton existence curve in a special intensity ratio. |
| Keywords: | Nonlinear optics Photorefractive effect Photovoltaic constant Self-defocusing Self-focusing |
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