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Optica Publishing Group
  • Quantum Electronics and Laser Science Conference
  • OSA Technical Digest (Optica Publishing Group, 1993),
  • paper QWH20

Diffusion-limited exciton fusion reaction in one-dimensional tetramethylammonium manganese trichloride (TMMC)

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Abstract

We present a detailed experimental study of the kinetics of a diffusion-limited reaction between photogenerated excitons in a one-dimensional system, tetramethylammonium manganese trichloride (CH3)4NMnCl3 (TMMC). We have observed this reaction at room temperature by measuring the exciton luminescence decay curves on a picosecond-to-millisecond time scale, after pulsed- laser excitation of the samples. The reaction kinetics is revealed in the excitation power dependence, i.e., the dependence on the initial exciton density, of the nonexponential shape of these curves, as shown in Fig. 1.

© 1993 Optical Society of America

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