Baumberg, J.J., Savvidis, P.G., Stevenson, R.M., Tartakovskii, A.I., Skolnick, M.S., Whittaker, D.M. and Roberts, J.S. (2000) Parametric oscillation in a vertical microcavity: a polariton condensate or micro-optical parametric oscillation. Physical Review B: Condensed Matter and Materials Physics, 62 (24). R16247-R16250. ISSN 1098-0121
Semiconductor microcavities can support quasiparticles which are half-light and half-matter with interactions possessed by neither component alone. We show that their distorted dispersion relation forms the basis of a quasiparticle ‘‘trap’’ and elicits extreme enhancements of their nonlinear optical properties. When driven by a continuous wave laser at a critical angle, the quasiparticles are sucked into the trap, condensing into a macroscopic quantum state which efficiently emits light.
This device is thus an optical parametric oscillator based on quasiparticle engineering. In contrast to a laser, macroscopic coherence is established in the electronic excitations as well as the light field. This paves the way to new techniques analogous to those established in atomic and superconducting condensates, such as ultrasensitive solid-state interferometers.
|Copyright, Publisher and Additional Information:||© 2000 The American Physical Society. Reproduced in accordance with the publisher’s self-archiving policy.|
|Institution:||The University of Sheffield|
|Academic Units:||The University of Sheffield > Faculty of Engineering (Sheffield) > Department of Electronic and Electrical Engineering (Sheffield)
The University of Sheffield > Faculty of Science (Sheffield) > Department of Physics and Astronomy (Sheffield)
|Depositing User:||Repository Assistant|
|Date Deposited:||27 Jul 2006|
|Last Modified:||05 Jun 2014 19:03|
|Publisher:||American Institute of Physics|