High spectro-temporal compression on a nonlinear CMOS-chip

查看全文 作　　者：Ju Won [1]Choi;Ezgi [1]Sahin;Byoung-Uk [1]Sohn;George [1]F.R.Chen;Doris [2]K.T.Ng;Anuradha [3,4]M.Agarwal;Lionel [4,5]C.Kimerling;Dawn [1,2]T.H.Tan

机构地区：[1]Photonics Devices and System Group,SUTD-MIT International Design Center,Singapore University of Technology and Design,Singapore 487372,Singapore;[2]Institute of Microelectronics,A*STAR(Agency for Science,Technology and Research),2 Fusionopolis Way,#08-02,Innovis Tower,Singapore 138634,Singapore;[3]Microphotonics Center,Massachusetts Institute of Technology,77 Massachusetts Avenue,Cambridge,MA 02139,USA;[4]Materials Research Laboratory,Massachusetts Institute of Technology,77 Massachusetts Avenue,Cambridge,MA 02139,USA;[5]Department of Materials Science and Engineering,Massachusetts Institute of Technology,77 Massachusetts Avenue,Cambridge,MA 02139,USA

出　　处：《Light(Science & Applications)》索引2021年第10卷第7期,共15页

基　　金：supported by the National Research Foundation Competitive Research Grant(NRF-CRP18-2017-03);the MOE ACRF Tier 2 Grant. 摘　　要：Optical pulses are fundamentally defined by their temporal and spectral properties.The ability to control pulse properties allows practitioners to efficiently leverage them for advanced metrology,high speed optical communications and attosecond science.Here,we report 11×temporal compression of 5.8 ps pulses to 0.55 ps using a low power of 13.3 W.The result is accompanied by a significant increase in the pulse peak power by 9.4×.These results represent the strongest temporal compression demonstrated to date on a complementary metal–oxide–semiconductor(CMOS)chip.In addition,we report the first demonstration of on-chip spectral compression,3.0×spectral compression of 480 fs pulses,importantly while preserving the pulse energy.The strong compression achieved at low powers harnesses advanced on-chip device design,and the strong nonlinear properties of backend-CMOS compatible ultra-silicon-rich nitride,which possesses absence of two-photon absorption and 500×larger nonlinear parameter than in stoichiometric silicon nitride waveguides.The demonstrated work introduces an important new paradigm for spectro-temporal compression of optical pulses toward turn-key,on-chip integrated systems for all-optical pulse control. 关键词：PULSE OPTICAL NONLINEAR

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High spectro-temporal compression on a nonlinear CMOS-chip

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