Optics letters
Sum-frequency generation processes with minimal crystal length.
Haifei Zhu, Yonggang Xu, Zhanrong Zhou, Yongfang Li
Published: 202510.1364/OL.579993
Abstract
Using the Pontryagin maximum principle (PMP), we address the crystal length minimization problem in sum-frequency generation (SFG) under the undepleted pump approximation. Our results show that the minimal crystal length is inversely proportional to…
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