Broadband and continuous wave pumped second-harmonic generation from microfiber coated with layered GaSe crystal

作     者：Zhen Hao Biqiang Jiang Yuxin Ma Ruixuan Yi Xuetao Gan Jianlin Zhao Zhen Hao;Biqiang Jiang;Yuxin Ma;Ruixuan Yi;Xuetao Gan;Jianlin Zhao

作者机构：Key Laboratory of Light Field Manipulation and Information AcquisitionMinistry of Industry and Information Technologyand Shaanxi Key Laboratory of Optical Information TechnologySchool of Physical Science and TechnologyNorthwestern Polytechnical UniversityXi’an 710129China 

出 版 物：《Opto-Electronic Advances》 (光电进展（英文）)

年 卷 期：2023年第6卷第9期

页      面：59-68页

核心收录：

学科分类：080901[工学-物理电子学] 0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 080401[工学-精密仪器及机械] 0804[工学-仪器科学与技术] 0803[工学-光学工程] 

基　　金：supports from National Natural Science Foundation of China(No.61975166,11634010) Key Research and Development Program(No.2017YFA0303800) 

主　　题：nonlinear optics second-harmonic generation continuous wave pump high efficiency multi-frequencies mixing broad spectra microfibers gallium selenide 

摘      要：The conversion-efficiency for second-harmonic(SH)in optical fibers is significantly limited by extremely weak second-order nonlinearity of fused silica,and pulse pump lasers with high peak power are widely ***,we propose a simple strategy to efficiently realize the broadband and continuous wave(CW)pumped SH,by transferring a crystalline GaSe coating onto a microfiber with phase-matching *** the experiment,high efficiency up to 0.08%W-1mm-1 is reached for a C-band pump *** high enough efficiency not only guarantees SH at a single frequency pumped by a CW laser,but also multi-frequencies mixing supported by three CW light ***,broadband SH spectrum is also achieved under the pump of a superluminescent light-emitting diode source with a 79.3 nm *** proposed scheme provides a beneficial method to the enhancement of various nonlinear parameter processes,development of quasi-monochromatic or broadband CW light sources at new wavelength regions.