Electro-optic modulation on nonlinear phase shift and fundamental transmission in quasi-phase-matched second-harmonic generation |
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Authors: | Yunji Meng Mingjun Zhu Peining Li |
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Affiliation: | Department of Applied Physics, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China |
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Abstract: | Nonlinear phase shift and transmission experienced by a beam at the fundamental frequency during electro-optic modulated quasi-phase-matched second-harmonic generation are studied. Numerical results indicate that the nonlinear phase shift of fundamental wave shows a difference of π, while fundamental transmission is controllable only by applying a DC electric field along z-axis. The above effect can be implemented on high-contrast optical switching devices such as Mach-Zehnder push-pull device. The relationships between the characteristic (peak and dip) electric fields and the initial pump intensity are also discussed. |
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Keywords: | Electro-optic modulation Nonlinear phase shift Fundamental transmission Quasi-phase-matched second-harmonic generation |
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