Formation of domain reversal by direct irradiation with femtosecond laser in lithium niobate |
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| Authors: | Haisheng Zhu Xianfeng Chen Hongyun Chen Xuewei Deng |
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| Affiliation: | Department of Physics, the State Key Laboratory on Fiber Optic Local Area Communication Networks and Advanced Optical Communication Systems, Shanghai Jiao Tong University, Shanghai 200240 |
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| Abstract: | We propose that domain inversion can be directly induced by femtceecond laser both theoretically and experimentally, which opens a path to achieve three-dimensional (3D) nonlinear crystal with a period in sub-micron-scale. A simulation of domain inversion is modeled by considering the temporal distribution of femtosecond pulses. The calculation results clarify that the domain inversions can happen within or after the interaction with the laser pulse, and the response time of domain inversion is in the picosecond level depending on the intensity and the materials. The domain reversal windows of lithium niobate by femtosecond laser are observed which agrees with theoretical predictions qualitatively. |
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