High-Q polariton modes in heterostructures with traps for dipolar excitons

Journal Article · Mon Nov 30 00:00:00 EST 2009 · Quantum Electronics (Woodbury, N.Y.)

DOI:https://doi.org/10.1070/QE2009V039N11ABEH014029· OSTI ID:21467081

Kalinin, Petr A; Kocharovsky, Vitalii V; Kocharovskii, Vladimir V ^[1]

---

1. Institute of Applied Physics, Russian Academy of Sciences, Nizhnii Novgorod (Russian Federation)

Polariton modes are studied in two-dimensional traps based on quantum-well heterostructures allowing the production of a Bose - Einstein condensate of indirect excitons. The characteristic equation for the modes is derived using the boundary conditions on the exciton layer located inside a resonator formed by such a trap. The spectrum and the structure of high-Q modes are found analytically and numerically. It is shown that some of these modes become unstable at the high exciton density and long polarisation relaxation time. According to the estimates, this instability can take place in experiments on the Bose condensation of dipolar excitons, thus explaining the origin of their coherent emission. (laser applications and other topics in quantum electronics)

• OSTI ID: 21467081
• Journal Information: Quantum Electronics (Woodbury, N.Y.), Vol. 39, Issue 11; Other Information: DOI: 10.1070/QE2009v039n11ABEH014029; ISSN 1063-7818
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
BOSE-EINSTEIN CONDENSATION
BOUNDARY CONDITIONS
DENSITY
EMISSION
EXCITONS
INSTABILITY
LASERS
LAYERS
POLARIZATION
QUANTUM WELLS
RELAXATION TIME
RESONATORS
SPECTRA
TRAPS
ELECTRONIC EQUIPMENT
EQUIPMENT
NANOSTRUCTURES
PHYSICAL PROPERTIES
QUASI PARTICLES