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Title: Generation of high-field terahertz pulses in an HMQ-TMS organic crystal pumped by an ytterbium laser at 1030 nm
Authors : Rovere, Andrea
Jeong, Young-Gyun
Piccoli, Riccardo
Lee, Seung-Heon
Lee, Seung-Chul
Kwon, O-Pil
Jazbinsek, Mojca
Morandotti, Roberto
Razzari, Luca
Published in : Optics Express
Volume(Issue) : 26
Issue : 3
Pages : 2509
Pages to: 2516
Publisher / Ed. Institution : Optical Society of America
Issue Date: 2018
License (according to publishing contract) : Licence according to publishing contract
Type of review: Peer review (publication)
Language : English
Subject (DDC) : 530: Physics
620.11: Engineering materials
Abstract: We present the generation of high-peak-electric-field terahertz pulses via collinear optical rectification in a 2-(4-hydroxy-3-methoxystyryl)-1-methilquinolinium-2,4,6-trimethylbenzenesulfonate (HMQ-TMS) organic crystal. The crystal is pumped by an amplified ytterbium laser system, emitting 170-fs-long pulses centered at 1030 nm. A terahertz peak electric field greater than 200 kV/cm is obtained for 420 µJ of optical pump energy, with an energy conversion efficiency of 0.26% - about two orders of magnitude higher than in common inorganic crystals collinearly pumped by amplified femtosecond lasers. An open-aperture Z-scan measurement performed on an n-doped InGaAs thin film using such terahertz source shows a nonlinear increase in the terahertz transmission of about 2.2 times. Our findings demonstrate the potential of this terahertz generation scheme, based on ytterbium laser technology, as a simple and efficient alternative to the existing intense table-top terahertz sources. In particular, we show that it can be readily used to explore nonlinear effects at terahertz frequencies.
Further description : Copyright information see:
Departement: School of Engineering
Organisational Unit: Institute of Computational Physics (ICP)
Publication type: Article in scientific journal
DOI : 10.21256/zhaw-3188
ISSN: 1094-4087
Appears in Collections:Publikationen School of Engineering

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