TY - JOUR AB - We present strong enhancement of third harmonic generation in an amorphous silicon metasurface consisting of elliptical nano resonators. We show that this enhancement originates from a new type of multi-mode Fano mechanism. These ‘Super-Fano’ resonances are investigated numerically in great detail using full-wave simulations. The theoretically predicted behavior of the metasurface is experimentally verified by linear and nonlinear transmission spectroscopy. Moreover, quantitative nonlinear measurements are performed, in which an absolute conversion efficiency as high as ηmax ≈ 2.8 × 10−7 a peak power intensity of 1.2 GW cm−2 is found. Compared to an unpatterned silicon film of the same thickness amplification factors of up to ~900 are demonstrated. Our results pave the way to exploiting a strong Fano-type multi-mode coupling in metasurfaces for high THG in potential applications. AU - Hähnel, David AU - Golla, Christian AU - Albert, Maximilian AU - Zentgraf, Thomas AU - Myroshnychenko, Viktor AU - Förstner, Jens AU - Meier, Cedrik ID - 44097 IS - 1 JF - Light: Science & Applications KW - tet_topic_meta SN - 2047-7538 TI - A multi-mode super-fano mechanism for enhanced third harmonic generation in silicon metasurfaces VL - 12 ER - TY - JOUR AU - Sain, Basudeb AU - Zentgraf, Thomas ID - 16839 JF - Light: Science & Applications SN - 2047-7538 TI - Metasurfaces help lasers to mode-lock VL - 9 ER - TY - JOUR AU - Georgi, Philip AU - Massaro, Marcello AU - Luo, Kai Hong AU - Sain, Basudeb AU - Montaut, Nicola AU - Herrmann, Harald AU - Weiss, Thomas AU - Li, Guixin AU - Silberhorn, Christine AU - Zentgraf, Thomas ID - 12919 JF - Light: Science & Applications SN - 2047-7538 TI - Metasurface interferometry toward quantum sensors VL - 8 ER - TY - JOUR AU - Zhao, Ruizhe AU - Sain, Basudeb AU - Wei, Qunshuo AU - Tang, Chengchun AU - Li, Xiaowei AU - Weiss, Thomas AU - Huang, Lingling AU - Wang, Yongtian AU - Zentgraf, Thomas ID - 5916 IS - 1 JF - Light: Science & Applications SN - 2047-7538 TI - Multichannel vectorial holographic display and encryption VL - 7 ER - TY - JOUR AU - Yin, Xinghui AU - Steinle, Tobias AU - Huang, Lingling AU - Taubner, Thomas AU - Wuttig, Matthias AU - Zentgraf, Thomas AU - Giessen, Harald ID - 679 IS - 7 JF - Light: Science & Applications SN - 2047-7538 TI - Beam switching and bifocal zoom lensing using active plasmonic metasurfaces VL - 6 ER - TY - JOUR AU - Linnenbank, Heiko AU - Grynko, Yevgen AU - Förstner, Jens AU - Linden, Stefan ID - 35 IS - 1 JF - Light: Science & Applications KW - tet_topic_opticalantenna KW - tet_topic_shg SN - 2047-7538 TI - Second harmonic generation spectroscopy on hybrid plasmonic/dielectric nanoantennas VL - 5 ER - TY - JOUR AU - Huang, Lingling AU - Chen, Xianzhong AU - Bai, Benfeng AU - Tan, Qiaofeng AU - Jin, Guofan AU - Zentgraf, Thomas AU - Zhang, Shuang ID - 1710 IS - 3 JF - Light: Science & Applications SN - 2047-7538 TI - Helicity dependent directional surface plasmon polariton excitation using a metasurface with interfacial phase discontinuity VL - 2 ER -