Femtosecond time-resolved x-ray diffraction from optical coherent phonons in CdTe(111) crystal

Nakamura, Kazutaka G.; Satoshi Ishii; Ishitsu, Shusel; Shiokawa, Masato; Takahashi, Hiroshi; Dharmalingam, Kurunthu; Irisawa, Jun; Hironaka, Yoichiro; Ishioka, Kunie; Kitajima, Masahiro
August 2008
Applied Physics Letters;8/11/2008, Vol. 93 Issue 6, p061905
Academic Journal
Coherent phonons excited in a CdTe(111) crystal by 70 fs laser irradiation have been investigated by femtosecond time-resolved x-ray diffraction. The longitudinal optical phonon with a frequency of approximately 5 THz near the Brillouin zone center has been detected as modulation in intensities of x-ray diffraction. Atomic displacement in the [111] direction in the coherent longitudinal optical phonon has been estimated.


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