caa a22 4500 530098423 20181217030326.0 cr unu---uuuuu 181026e20150127xx s 000 0 eng 10.3929/ethz-b-000098819 doi 10.1038/srep08059 doi (ETHRESEARCH)oai:www.research-collection.ethz.ch:20.500.11850/98819 Shalaby Mostafa Spectrally intense terahertz source based on triangular Selenium [Elektronische Daten] [Mostafa Shalaby, Christoph P. Hauri] Sci Rep Open access ethresearch The intensity of a nonlinear terahertz (THz) source is primarily given by its spectral density. In this letter, we introduce triangular Selinium (Se) as a novel THz emitter and show numerically its superior properties to the currently used crystals for intense THz generation. The excellent phase matching enables the applicability of elongated Se crystals which results in very high spectral flatness and broad THz bandwidth (0.5-3.5 THz), high conversion efficiency and THz pulse energy.The spectral THz density produced by optical rectification in Selenium exceeds those from contemporary crystal-based THz sources. Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0 ethresearch Nonlinear optics ethresearch Optoelectronic devices and components ethresearch Terahertz optics ethresearch Hauri Christoph P. joint author Scientific Reports London : Nature Publishing Group 5, p. 8059 2045-2322 http://hdl.handle.net/20.500.11850/98819 text/html WWW-Backlink auf das Repository (Open access) 1 Journal Article ethresearch ETHRESEARCH 856 40 http://hdl.handle.net/20.500.11850/98819 text/html WWW-Backlink auf das Repository (Open access) ETHRESEARCH 100 1- Shalaby Mostafa ETHRESEARCH 700 1- Hauri Christoph P. joint author ETHRESEARCH 773 0- Scientific Reports London : Nature Publishing Group 5, p. 8059 2045-2322 BK010053 XK010053 XK010000 ETHRESEARCH ETHRESEARCH ETHRESEARCH Journal Article Open access