Detection of terahertz radiation from longitudinal optical phonon-plasmon coupling modes in InSb film using an ultrabroadband photoconductive antenna

Ping Gu*, Masahiko Tani, Kiyomi Sakai, T. R. Yang

*此作品的通信作者

研究成果: 雜誌貢獻期刊論文同行評審

43 引文 斯高帕斯(Scopus)

摘要

Terahertz radiation from longitudinal optical (LO) phonon-plasmon coupling modes in InSb films is observed using an ultrafast photoconductive antenna detector. We demonstrate a response frequency of up to 7 THz for a low-temperature-grown GaAs-based photoconductive antenna gated with 25 fs laser pulses. It is found that the emission frequencies of the coupling modes are dependent only on the residual carrier density, not on the excitation carrier density. It is also found that the LO phonon-plasmon oscillations in semiconductors can serve as an efficient THz source.

原文英語
頁(從 - 到)1798-1800
頁數3
期刊Applied Physics Letters
77
發行號12
DOIs
出版狀態已發佈 - 2000 九月 18

ASJC Scopus subject areas

  • 物理與天文學(雜項)

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