Wide frequency tunable GaSe terahertz emitter under collinear phase matching condition

Hikari Dezaki, Tadao Tanabe, Haiyan Jin, Yutaka Oyama

Research output: Chapter in Book/Report/Conference proceedingConference contribution

5 Citations (Scopus)

Abstract

1.2μm - laser pumped wide frequency tunable coherent terahertz (THz) light source is demonstrated. The operation principle is based on difference frequency generation (DFG) with an excitation of phonon - polariton in Gallium Selenide (GaSe) crystal. The pump and signal lasers used are 1.2μm Cr: Forsterite lasers. The tuning range of the THz wave frequency covers from 0.3THz to 4.8THz (type eoo phase matching) and 8.3THz to 10.2THz (type eoo phase matching) under collinear phase matching conditions. It is shown that the maximum conversion efficiency is up to ∼10-6, which is 3 orders in magnitude larger than that of Gallium Phosphide (GaP) crystal.

Original languageEnglish
Title of host publicationAdvanced Materials in Microwaves and Optics, AMMO2011
PublisherTrans Tech Publications Ltd
Pages58-61
Number of pages4
ISBN (Print)9783037852736
DOIs
Publication statusPublished - 2012
Externally publishedYes
Event2011 International Conference on Advanced Materials in Microwaves and Optics, AMMO2011 - Bangkok, Thailand
Duration: 2011 Sep 302011 Oct 1

Publication series

NameKey Engineering Materials
Volume500
ISSN (Print)1013-9826
ISSN (Electronic)1662-9795

Conference

Conference2011 International Conference on Advanced Materials in Microwaves and Optics, AMMO2011
CountryThailand
CityBangkok
Period11/9/3011/10/1

Keywords

  • GaSe crystal
  • Non-linear optics
  • Phonon - Polariton
  • Terahertz wave

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

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  • Cite this

    Dezaki, H., Tanabe, T., Jin, H., & Oyama, Y. (2012). Wide frequency tunable GaSe terahertz emitter under collinear phase matching condition. In Advanced Materials in Microwaves and Optics, AMMO2011 (pp. 58-61). (Key Engineering Materials; Vol. 500). Trans Tech Publications Ltd. https://doi.org/10.4028/www.scientific.net/KEM.500.58