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	Complete and robust energy conversion by sum frequency generation based on Invariant Engineering
	Zhang, Cong-Fu1,3; Wang, Zhao-Lu3; Liu, Hong-Jun2,3
英文摘要	We propose an analytical method to achieve complete energy conversion in sum frequency generation based on Lewis-Riesenfeld invariants theory. This technique, derived from a two-level atom transition in quantum mechanics, is more efficient and robust than conventional methods. In our scheme, the quasi-adiabatic single control parameter model is established, and the value of single control parameter is selected to make the initial eigenstate perfectly converted to the final eigenstate we need. Corresponds to the nonlinear frequency conversion process, the nonlinear crystal structure is designed with the inverse engineering of optimal control theory, which is robust against the perturbations in the coupling coefficient and phase mismatch, including pump intensity and crystal polarization period variations, and results in almost 100% conversion efficiency at any crystal length. It is demonstrated that the frequency conversion can be achieved in the wavelength range of 2.6 μm -3.6 μm with a spectral bandwidth of the conversion efficiency over 50% approaching to 400 nm when the crystal length L=1 mm. Copyright © 2022, The Authors. All rights reserved.
	2022-06-24
产权排序	1
语种	英语
内容类型	预印本
源URL	[http://ir.opt.ac.cn/handle/181661/96066]
专题	西安光学精密机械研究所_瞬态光学技术国家重点实验室
作者单位	1.University of Chinese Academy of Sciences, Beijing; 100084, China 2.Collabotative Innovation Center of Extreme Optics, Shanxi University, Taiyuan; 030006, China; 3.State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Science, Xi’an; 710119, China;
推荐引用方式 GB/T 7714	Zhang, Cong-Fu,Wang, Zhao-Lu,Liu, Hong-Jun. Complete and robust energy conversion by sum frequency generation based on Invariant Engineering. 2022.

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