Rigorous intensity and phase-shift manipulation in optical frequency conversion.
A simple method is employed to investigate the nonlinear frequency conversion in optical superlattices (OSL) with pump depletion. Four rigorous phase-matching conditions for different purposes are obtained directly from the nonlinear coupled equations, and the resulting OSL domain structures are generally aperiodic rather than periodic. With this method, not only the intensity but also the phase-shift of the harmonic waves can be manipulated at will. The second-harmonic generation of Gaussian beam is further investigated. This work may provide a guidance for the practical applications of designing nonlinear optical devices with high conversion efficiency.
National Laboratory of Solid State Microstructures and Collaborative Innovation Center of Advanced Microstructures and Key Laboratory of Modern Acoustics, Nanjing University, Nanjing 210093, China.|College of Engineering and Applied Sciences, Nanjing University, Nanjing 210093, China.
Bo
B
Yang
National Laboratory of Solid State Microstructures and Collaborative Innovation Center of Advanced Microstructures and Key Laboratory of Modern Acoustics, Nanjing University, Nanjing 210093, China.|College of Engineering and Applied Sciences, Nanjing University, Nanjing 210093, China.
Yang-Yang
YY
Yue
National Laboratory of Solid State Microstructures and Collaborative Innovation Center of Advanced Microstructures and Key Laboratory of Modern Acoustics, Nanjing University, Nanjing 210093, China.|College of Engineering and Applied Sciences, Nanjing University, Nanjing 210093, China.
Rong-Er
RE
Lu
National Laboratory of Solid State Microstructures and Collaborative Innovation Center of Advanced Microstructures and Key Laboratory of Modern Acoustics, Nanjing University, Nanjing 210093, China.|School of Physics, Nanjing University, Nanjing 210093, China.
Xu-Hao
XH
Hong
National Laboratory of Solid State Microstructures and Collaborative Innovation Center of Advanced Microstructures and Key Laboratory of Modern Acoustics, Nanjing University, Nanjing 210093, China.|College of Engineering and Applied Sciences, Nanjing University, Nanjing 210093, China.
Chao
C
Zhang
National Laboratory of Solid State Microstructures and Collaborative Innovation Center of Advanced Microstructures and Key Laboratory of Modern Acoustics, Nanjing University, Nanjing 210093, China.|College of Engineering and Applied Sciences, Nanjing University, Nanjing 210093, China.
Yi-Qiang
YQ
Qin
National Laboratory of Solid State Microstructures and Collaborative Innovation Center of Advanced Microstructures and Key Laboratory of Modern Acoustics, Nanjing University, Nanjing 210093, China.|School of Physics, Nanjing University, Nanjing 210093, China.
Yong-Yuan
YY
Zhu