F eb 1 99 9 Squeezing spectra of the output field for high density exciton laser
نویسندگان
چکیده
ˇThe effect of the non-linear interaction between the high density Wannier excitons is analysed. We use the Fokker-Planck equation in the positive P presentation and the corresponding stochastic differential equation to study the composite system of a single mode cavity field and exciton under classical field pumping. The small fluctuation approximation is made to get the quadrature squeezing spectra of the output light field. The conditions for the squeezing of the either quadrature component of the output light are given.
منابع مشابه
DENSITY-DEPENDENT SQUEEZING OF EXCITONS IN HIGHLY EXCITED SEMICONDUCTORS by Nguyen Hong Quang International Center for Theoretical Physics
The time evolution from coherent states to squeezed states of high density excitons is studied theoretically based on the boson formalism and within the Random Phase Approximation. Both the mutual interaction between excitons and the anharmonic exciton-photon interaction due to phase-space filling of excitons are included in consideration. It is shown that the exciton squeezing depends strongly...
متن کاملExperimental Study of a Flash-lamp Pumped Passively Q-Switched Nd:YAG Laser Using Cr4+:YAG Saturable Absorber
This paper deals with the experimental results of a xenon flash-lamp pumped passively Q-switched Nd:YAG laser using Cr4+:YAG saturable absorber. The need of a laser cavity to be integrated into a time-of-flight laser range finder is of great interest as an experimental investigation of several laser resonators. Two types of laser resonator, with different lengths, have been studied: the flat-fl...
متن کاملDissipative dynamics of the semiconductor-cavity QED with q-deformed bosons in the dispersive approximation
In this paper we give fully analytical description of the dynamics of a collection of N -Frenkel excitons in high density regime dispersively coupled to a single mode cavity field, in the presence of both exciton and cavity-field dissipations. By using excitonic operators as q-deformed bosonic operators for the system, we solve analytically the Liouville equation for the density operator at zer...
متن کاملar X iv : h ep - t h / 99 02 02 7 v 1 3 F eb 1 99 9 INFRARED REGION OF QCD AND CONFINEMENT
Gauge field configurations appropriate for the infrared region of QCD is proposed. Using the usual QCD action, confinement is realized as in the London theory of Meissner effect.
متن کاملar X iv : a st ro - p h / 99 02 09 5 v 1 5 F eb 1 99 9 Radiospectra and Kinematics in Blazars
Broad band spectra of total and compact–scale radio emission from blazars, used in combination with kinematic information inferred from VLBI monitoring programs, can be applied successfully to better constrain the models of compact jets. We discuss here a " hands-on " approach for tying together the kinematic and spectral properties of radio emission from blazars.
متن کامل