Optics of spin-noise-induced gyrotropy of asymmetric microcavity

Abstract

The optical gyrotropy noise of a high-finesse semiconductor Bragg microcavity with an embedded quantum well (QW) is studied at different detunings of the photon mode and the QW exciton resonances. A strong suppression of the noise magnitude for the photon mode frequencies lying above exciton resonances is found. We show that such a critical behavior of the observed optical noise power is specific of asymmetric Fabry-Perot resonators. As follows from our analysis, at a certain level of intracavity loss, the reflectivity of the asymmetric resonator vanishes, while the polarimetric sensitivity to the gyrotropy changes dramatically when moving across the critical point. The results of model calculations are in a good agreement with our experimental data on the spin noise in a single-quantum-well microcavity and are confirmed also by the spectra of the photo-induced Kerr rotation in the pump-probe experiments.

6 pages, 5 figures

References in corpus (2)

• Semiconductor Spin Noise Spectroscopy: Fundamentals, Accomplishments, and Challenges
• Spin noise spectroscopy of a single-quantum-well microcavity

Cited by in corpus (4)

• Spin-noise-based magnetometry of an $n$-doped GaAs microcavity in the field of elliptically polarized light
• Increased sensitivity of spin noise spectroscopy using homodyne detection in $n$-doped GaAs
• Raman scattering model of the spin noise
• Ultimate photo-induced Kerr rotation achieved in semiconductor microcavities