Lanzillotti-Kimura N D, Fainstein A, Huynh A, Perrin B, Jusserand B, Miard A, Lemaître A
Centro Atómico Bariloche & Instituto Balseiro, C.N.E.A., 8400 S. C. de Bariloche, R. N., Argentina.
Phys Rev Lett. 2007 Nov 23;99(21):217405. doi: 10.1103/PhysRevLett.99.217405. Epub 2007 Nov 20.
Ultrafast coherent generation of acoustic phonons is studied in a semiconductor optical microcavity. The confinement of the light pulse amplifies both the generation and the detection of phonons. In addition, the standing wave character of the photon field modifies the generation and detection phonon bandwidth. Coherent generation experiments in an acoustic nanocavity embedded in an optical microcavity are reported as a function of laser energy and incidence angle to evidence the separate role of the optical and exciton resonances. Amplified signals and phonon spectra modified by the optical confinement are demonstrated.
在半导体光学微腔中研究了声子的超快相干产生。光脉冲的限制增强了声子的产生和探测。此外，光子场的驻波特性改变了产生和探测声子的带宽。报道了嵌入光学微腔中的声学纳米腔中的相干产生实验，该实验作为激光能量和入射角的函数，以证明光学和激子共振的不同作用。展示了由光学限制修改的放大信号和声子光谱。
