Strong Optical-Mechanical Coupling in a Vertical GaAs/AlAs Microcavity for Subterahertz Phonons and Near-Infrared Light

被引：158

作者：

Fainstein, A. ^{[1
,2
]}

Lanzillotti-Kimura, N. D. ^{[1
,2
]}

Jusserand, B. ^{[3
]}

Perrin, B. ^{[3
]}

机构：

[1] CNEA, Inst Balseiro, San Carlos De Bariloche, Rio Negro, Argentina

[2] CNEA, Ctr Atom Bariloche, San Carlos De Bariloche, Rio Negro, Argentina

[3] UPMC, Inst Nanosci Paris, CNRS, UMR 7588, F-75005 Paris, France

来源：

PHYSICAL REVIEW LETTERS | 2013年 / 110卷 / 03期

关键词：

ACOUSTIC PHONONS; SEMICONDUCTOR SUPERLATTICES; CAVITY OPTOMECHANICS; INSTABILITY;

D O I：

10.1103/PhysRevLett.110.037403

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We show that distributed Bragg reflector GaAs/AlAs vertical cavities designed to confine photons are automatically optimal to confine phonons of the same wavelength, strongly enhancing their interaction. We study the impulsive generation of intense coherent and monochromatic acoustic phonons by following the time evolution of the elastic strain in picosecond-laser experiments. Efficient optical detection is assured by the strong phonon backaction on the high-Q optical cavity mode. Large optomechanical factors are reported (similar to THz/nm range). Pillar cavities based in these structures are predicted to display picogram effective masses, almost perfect sound extraction, and threshold powers for the stimulated emission of phonons in the range mu W-mW, opening the way for the demonstration of phonon "lasing" by parametric instability in these devices.

引用

页数：5

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