Simulations of the phonon Bragg switch in GaAs

Summary, in English

It has recently been proposed that X-rays can be switched on sub-picosecond time-scales by using laser-generated coherent optical phonons: The so called phonon Bragg switch. We present here detailed simulations of the efficiency of such a switch by solving the time-dependent generalized Takagi-Taupin equations utilizing a perturbative approach. We explore the switching efficiency in diffraction from the (004) planes of GaAs as a function of both excited phonon wave vector and amplitude.

• Författare: J M H Sheppard; Peter Sondhauss; R Merlin; P Bucksbaum; R W Lee; J S Wark
• Avdelning/ar: MAX IV-laboratoriet
• Publiceringsår: 2005
• Språk: Engelska
• Sidor: 181-185
• Publikation/Tidskrift/Serie: Solid State Communications
• Volym: 136
• Issue: 3
• Länkar: http://dx.doi.org/10.1016/j.ssc.2005.05.056
• Dokumenttyp: Artikel i tidskrift
• Förlag: Pergamon Press Ltd.
• Ämne: Physical Sciences; Natural Sciences
• Nyckelord: phonons; inelastic light scattering; X-ray scattering
• Status: Published
• ISBN/ISSN/Övrigt: ISSN: 1879-2766