Two-photon selective excitation of phonon-mode in diamond using mid-infrared free-electron laser

• Sato, Oji

  Graduate School of Energy Science, Kyoto University

• Yoshida, Kyohei

  Institute of Chemistry and Biology of Membranes and Nano-objects, University of Bordeaux

• Zen, Heishun

  Institute of Advanced Energy, Kyoto University

• Hachiya, Kan

  Graduate School of Energy Science, Kyoto University

• Goto, Takuya

  Graduate School of Science and Engineering, Doshisha University

• Sagawa, Takashi

  Graduate School of Energy Science, Kyoto University

• Ohgaki, Hideaki

  Institute of Advanced Energy, Kyoto University

Abstract

Two-photon selective excitation of an infrared (IR)-inactive phonon mode by a mid-infrared tunable free-electron laser (FEL) was accomplished. The mode-selective phonon excitation of IR-active mode by one-photon excitation using FEL (Yoshida et al. (2013) [20]) was extended to the IR-inactive mode excitation. The T2g optical phonon mode in single-crystal diamond at 1, 332cm−1 was selected, and the FEL photon energy corresponding to the oscillation wavelength was tuned to the half of the target phonon energy. The successful mode excitation was confirmed by anti-Stokes Raman scattering signal of T2g for the sample at cryogenic temperature, where all other modes were suppressed. The signal was observed at T2g phonon energy with red-shift of the peak to 1, 306cm−1, which was accompanied by surface damage induced by intense laser irradiations.

Journal

• Physics Letters A

  Physics Letters A 384 (10), 126223-, 2020-04-09

  Elsevier BV

Keywords

• Selective phonon-mode excitation
• Free-electron laser
• Raman scattering
• Two-photon excitation
• Diamond

Details

• CRID: 1050848249686534528
• NII Article ID: 120006840125
• ISSN: 03759601
• DOI: 10.1016/j.physleta.2019.126223
• HANDLE: 2433/250440
• Web Site: https://api.elsevier.com/content/article/PII:S037596011931165X?httpAccept=text/xml
• Web Site: https://api.elsevier.com/content/article/PII:S037596011931165X?httpAccept=text/plain
• Text Lang: en
• Article Type: journal article
• Data Source:
  • IRDB
  • Crossref
  • CiNii Articles
  • KAKEN