Widely linear and non-phase-matched optical-to-terahertz conversion on GaSe:Te crystals

Wei Chen Chu, Shin An Ku, Harn Jiunn Wang, Chih-Wei Luo*, Yu M. Andreev, Grigory Lanskii, T. Kobayashi

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

22 Scopus citations


We demonstrate the widely linear and broadband terahertz (THz) generation on GaSe:Te crystals by femtosecond laser pulses. It was found that the dopant, Te atoms, in GaSe crystals significantly enhances the efficiency of THz generation, and its central frequency can be tuned by varying the crystal thickness through non-phase-matched optical rectification. Moreover, the wide-ranging linearity for the optical-to-THz conversion and centralfrequency- tunable THz generation promise for GaSe:Te crystals to be potential materials for high-power (>1.36 μW) THz applications.

Original languageEnglish
Pages (from-to)945-947
Number of pages3
JournalOptics Letters
Issue number5
StatePublished - 1 Mar 2012

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