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Conferences > CLEO_Europe > 2011 > CE > CE_P38
  • CLEO/Europe and EQEC 2011 Conference Digest
  • OSA Technical Digest (CD) (Optica Publishing Group, 2011),
  • paper CE_P38

Investigation of coherent acoustic phonons in THz quantum cascade laser structures

M. Hettich, A. Bruchhausen, J. Lloyd-Hughes, R. Gebs, A. Bartels, M. Fischer, M. Beck, G. Scalari, J. Faist, and T. Dekorsy

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Abstract

Coherent zone folded acoustic phonons in terahertz quantum cascade laser (QCL) structures [1] are investigated by high-speed asynchronous optical sampling [2]. This method is based on two Ti:sapphire lasers with repetition rates of ~1 GHz respectively. The time delay between pump and probe pulse is achieved by an offset in repetition rate of 5kHz. This allows for fast scanning times without moving mechanical parts [3].

© 2011 Optical Society of America

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