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Optica Publishing Group
  • International Conference on Quantum Electronics
  • OSA Technical Digest (Optica Publishing Group, 1988),
  • paper PD17

Biexciton Two-Photon Excitation by CW Tunable UV Picosecond Poises

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Abstract

Recently, we have developed a high-repetition-rate tunable picosecond UV light source by means of sum frequency generation and applied it to the measurement of time-resolved exciton luminescence.1) In this report, we present its extension to a nonlinear regime: the biexciton luminescence in CuCl via two- photon absorption.2) The observed line is found narrower and its lifetime is shorter (nearly "transform limited”) than those by previous measurements with strong excitation.34) Using this two-photon process, we have also measured the auto-correlation of the weak UV pulses which is too weak for the ordinary pulsewidth measurements.

© 1988 Optical Society of America

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