Ultrafast polariton population build-up mediated by molecular phonons in organic microcavities

Academic Article

Abstract

  • A key prerequisite for low-threshold polariton lasing in organic or inorganic microcavity systems is the efficient population of the lower polariton ground state. Here, we report the observation of a resonant phonon-mediated relaxation process which gives rise to nonthermal polariton population with sub 100 fs build-up times. This mechanism is manifested by discrete maxima of the angular-resolved photoluminescence intensity, with corresponding shortening of the photoluminescence rise time at respective phonon resonances. The realization of enhanced relaxation rates in disordered J-aggregate systems is important for developing room temperature organic laser sources with less fabrication complexity than their crystalline counterparts. © 2011 American Institute of Physics.
  • Authors

    Published In

    Digital Object Identifier (doi)

    Author List

  • Somaschi N; Mouchliadis L; Coles D; Perakis IE; Lidzey DG; Lagoudakis PG; Savvidis PG
  • Volume

  • 99
  • Issue

  • 14