LA phonoritons in Cu2O

被引：20

作者：

Hanke, L ^{[1
]}

Fröhlich, D

Ivanov, AL

Littlewood, PB

Stolz, H

机构：

[1] Univ Dortmund, Inst Phys, D-44221 Dortmund, Germany

[2] Univ Cambridge, Cavendish Lab, Dept Phys, TCM Grp, Cambridge CB3 0HE, England

[3] Univ Rostock, Fachbereich Phys, D-18051 Rostock, Germany

来源：

PHYSICAL REVIEW LETTERS | 1999年 / 83卷 / 21期

关键词：

D O I：

10.1103/PhysRevLett.83.4365

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report the observation of LA-phonoriton eigenstates, which are a pump-induced coherent superposition of excitons, photons, and longitudinal acoustic (LA) phonons developing in up-conversion Brillouin scattering of an intense polariton. The excitonic component of the LA phonoritons in a Cu2O bulk crystal in the presence of a coherent orthoexcitonic polariton is studied by stimulated two-photon emission spectroscopy. For optical intensities of 30-200 MW/cm(2) the relevant scale of the pump-induced spectral changes is 5-10 mu eV. The theory of LA phonoritons in Cu2O quantitatively reproduces the experimental data.

引用

页码：4365 / 4368

页数：4

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