Cavity-less on-chip optomechanics using excitonic transitions in semiconductor heterostructures.

ABSTRACT: The hybridization of semiconductor optoelectronic devices and nanomechanical resonators provides a new class of optomechanical systems in which mechanical motion can be coupled to light without any optical cavities. Such cavity-less optomechanical systems interconnect photons, phonons and electrons (holes) in a highly integrable platform, opening up the development of functional integrated nanomechanical devices. Here we report on a semiconductor modulation-doped heterostructure-cantilever hybrid system, which realizes efficient cavity-less optomechanical transduction through excitons. The opto-piezoelectric backaction from the bound electron-hole pairs enables us to probe excitonic transition simply with a sub-nanowatt power of light, realizing high-sensitivity optomechanical spectroscopy

SUBMITTER: Okamoto H 

PROVIDER: S-EPMC4634130 | biostudies-literature | 2015 Oct

REPOSITORIES: biostudies-literature