Coherent control of polariton parametric scattering in semiconductor microcavities
In a pump-probe experiment, we have been able to control, with phase-locked probe pulses, the ultrafast nonlinear optical emission of a semiconductor microcavity, arising from polariton parametric amplification. This evidences the coherence of the polariton population near k = 0, even for delays much longer than the pulse width. The control of a large population at k = 0 is possible although the probe pulses are much weaker than the large polarization they control. With rising pump power the dynamics of the scattering get faster. Just above threshold the parametric scattering process shows unexpected long coherence times, whereas when pump power is risen the contrast decays due to a significant pump reservoir depletion. The weak pulses at normal incidence control the whole angular emission pattern of the microcavity.
Ecole Polytech Fed Lausanne, Inst Photon & Electron Quant, CH-1015 Lausanne, Switzerland. Kundermann, S, Ecole Polytech Fed Lausanne, Inst Photon & Electron Quant, CH-1015 Lausanne, Switzerland., ISI Document Delivery No.: 724KA, Times Cited: 5, Cited Reference Count: 19, Cited References: , BAUMBERG JJ, 2000, PHYS REV B, V62, P16247, BRUNNER W, 1977, PROG OPTICS, V15, P3, CHEMLA DS, 2001, NATURE, V411, P549, CIUTI C, 2000, PHYS REV B, V62, R4825, CIUTI C, 2001, PHYS REV B, V63, DMITRIEV VG, 1999, SPRINGER SERIES OPTI, V64, DUNBAR LA, 2002, PHYS REV B, V66, HEBERLE AP, 1995, PHYS REV LETT, V75, P2598, LEE YS, 2001, APPL PHYS LETT, V78, P3941, MARIE X, 1999, PHYS REV B, V59, R2494, MESSIN G, 2001, PHYS REV LETT, V87, SABA M, 2000, PHYS REV LETT, V85, P385, SABA M, 2001, NATURE, V414, P731, SAVVIDIS PG, 2000, PHYS REV B, V62, P13278, SAVVIDIS PG, 2000, PHYS REV LETT, V84, P1547, STEVENSON RM, 2000, PHYS REV LETT, V85, P3680, WEHNER MU, 1997, OPT LETT, V22, P1455, WEISBUCH C, 1992, PHYS REV LETT, V69, P3314, YAMAMOTO Y, 2000, NATURE, V405, P629, 107402
Record created on 2007-08-31, modified on 2016-08-08