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Journal of the Optical Society of Korea

Journal of the Optical Society of Korea


  • Vol. 11, Iss. 3 — Sep. 25, 2007
  • pp: 138–141

Coherent Absorption Spectroscopy with Supercontinuum for Semiconductor Quantum Well Structure

Ciare C. Byeon, Myoung-Kyu Oh, Hoon-Soo Kang, Do-Kyeong Ko, Jong-Min Lee, Jong-Su Kim, Hyoung-Gyu Choi, Mun-Seok Jeong, and Chul-Sik Kee  »View Author Affiliations

Journal of the Optical Society of Korea, Vol. 11, Issue 3, pp. 138-141 (2007)

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We suggest that supercontinuum can be used for absorption spectroscopy to observe the exciton levels of a semiconductor nano-structure. Exciton absorption spectrum of a GaAs/AlGaAs quantum well was observed using supercontinuum generated by a microstructrured fiber pumped by a femtosecond (fs) pulsed laser. Significantly narrower peaks were observed in the absorption spectrum from 11 K up to room temperature than photoluminescence (PL) spectrum peaks. Because supercontinuum is coherent light and can readily provide high enough intensity, this method can provide a coherent ultra-broad band light source to identify exciton levels in semiconductors, and be applicable to coherent nonlinear spectroscopy such as electromagnetically induced transparency (EIT), lasing without inversion (LWI) and coherent photon control in semiconductor quantum structures.

© 2007 Optical Society of Korea

OCIS Codes
(300.0300) Spectroscopy : Spectroscopy
(300.6250) Spectroscopy : Spectroscopy, condensed matter

Original Manuscript: July 25, 2007
Revised Manuscript: September 13, 2007
Published: September 25, 2007

Ciare C. Byeon, Myoung-Kyu Oh, Hoon-Soo Kang, Do-Kyeong Ko, Jong-Min Lee, Jong-Su Kim, Hyoung-Gyu Choi, Mun-Seok Jeong, and Chul-Sik Kee, "Coherent Absorption Spectroscopy with Supercontinuum for Semiconductor Quantum Well Structure," J. Opt. Soc. Korea 11, 138-141 (2007)

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