摘要
非线性光子晶体能够实现高效的非线性光学过程,其制备手段吸引了该领域研究者的高度关注。飞秒激光加工技术具有极高的精度、分辨率和灵活性,相比传统的非线性结构制备工艺具有独特的优势。总结归纳了利用飞秒激光加工技术构建非线性光子晶体的研究进展,并对涉及的准相位匹配原理进行了简要介绍。讨论了飞秒激光反转铁电畴和擦除非线性系数的加工机理,论述了这两种方式在多种维度非线性光子晶体加工方面的实验成果和应用。最后分析了目前飞秒激光加工非线性光子晶体所遇到的挑战,并展望了未来的发展前景。
Significance The fabrication strategy for nonlinear photonic crystals has drawn substantial research interest because of their highly efficient nonlinear optical interactions.Femtosecond laser engineering has distinct advantages over conventional methods for the fabrication of nonlinear structures.These advantages include its high precision,resolution,and flexibility.This paper summarizes the research progress of femtosecond laser processing technology for constructing nonlinear photonic crystals and provides a brief introduction to the quasi-phase matching theory involved.The processing mechanism of femtosecond-laser-induced ferroelectric domain inversion and laser erasure of second order nonlinear polarization coefficients(χ^((2)))are discussed,and the experimental results and applications of nonlinear photonic crystals in different dimensions realized by these two approaches are demonstrated.Finally,the challenges of the femtosecond laser technique in the processing of nonlinear photonic crystals are analyzed,and the prospects for future development are presented.Progress This paper summarizes the research progress of femtosecond laser processing technology for constructing nonlinear photonic crystals and also provides a brief introduction to the quasi-phase matching theory involved.The processing mechanism of femtosecond-laser-induced ferroelectric domain inversion and laser erasure ofχ^((2))are discussed,and the experimental results and applications of nonlinear photonic crystals in different dimensions realized by these two approaches are demonstrated.Finally,the challenges faced by the femtosecond laser technique for processing nonlinear photonic crystals are analyzed,and the prospects for future development are discussed.Tightly focused femtosecond laser pulses can induce a thermoelectric field in the ferroelectric crystal that inverts the direction of spontaneous polarization.On the basis of this mechanism,an arbitrary arrangement of 2D inverted domains can be constructed to enhance the second-harmonic
作者
黎隆富
张乐然
徐力群
李欣
廖常锐
王义平
吴东
Li Longfu;Zhang Leran;Xu Liqun;Li Xin;Liao Changrui;Wang Yiping;Wu Dong(Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education/Guangdong Province,College of Physics and Optoelectronic Engineering,Shenzhen University,Shenzhen 518060,Guangdong,China;Department of Precision Machinery and Precision Instrumentation,University of Science and Technology of China,Hefei 230026,Anhui,China;Shenzhen Key Laboratory of Photonic Devices and Sensing Systems for Internet of Things,Guangdong and Hong Kong Joint Research Centre for Optical Fibre Sensors,Shenzhen University,Shenzhen 518060,Guangdong,China;State Key Laboratory of Pulsed Power Laser Technology,College of Electronics Engineering,National University of Defense Technology,Hefei 230601,Anhui,China;Anhui Laboratory of Advanced Laser Technology,Hefei 230601,Anhui,China)
出处
《中国激光》
EI
CAS
CSCD
北大核心
2023年第8期230-249,共20页
Chinese Journal of Lasers
基金
国家自然科学基金(61927814,52122511,91963127,52075516,51875544)
先进激光技术安徽省实验室开放研究基金(AHL2020KF01)。
关键词
激光光学
飞秒激光
微纳加工
非线性光子晶体
准相位匹配
非线性光束整形
laser optics
femtosecond laser
micro/nano fabrication
nonlinear photonic crystal
quasi-phase matching
nonlinear beam shaping
