Optical Nonlinearity and Ultrafast-Carrier Dynamics of a Strained Quantum-Well Saturable Bragg Reflector

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概要

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• We present observations of the wavelength-dependent time-resolved differential reflection in the multiple-strained-quantum-well saturable Bragg reflector (SSBR). It is shown that the large optical nonlinearity of transient reflectivity ($\Delta R/R$) of ${\sim}4$% for a pumping wavelength of 755 nm sharply reversed to $-0.6$% at 760 nm. The relationships of fast- and slow-carrier lifetimes with pumping wavelength are also discussed. We conclude that the strain-induced piezoelectric field and free-electron absorption play a dominant role in determining the optical nonlinearity and its carrier dynamics. This is the first time that wavelength-dependent time-resolved reflectivity in SSBR has been presented in detail.

• Published by the Japan Society of Applied Physics through the Institute of Pure and Applied Physicsの論文
• 2003-09-15

著者

• Huang Kai-fung

  Department Of Electrophysics National Chiao Tung University

• Pan Ci-ling

  Institute Of Electro-optic Engineering National Chiao Tung University

• SHIEH Jia-Min

  National Nano Device Laboratories

• Liu Tze-an

  Institute Of Electro-optic Engineering National Chiao Tung University

• Pan Ci-Ling

  Institute of Electro-Optical Engineering, National Chiao Tung University, 1001 Ta Hsueh Road, Hsinchu 300, Taiwan, R.O.C.

• Huang Kai-Fung

  Department of Electrophysics, National Chiao Tung University, 1001 Ta Hsueh Road, Hsinchu 300, Taiwan, R.O.C.

• Liu Tze-An

  Institute of Electro-Optical Engineering, National Chiao Tung University, 1001 Ta Hsueh Road, Hsinchu 300, Taiwan, R.O.C.

• Shieh Jia-Min

  National Nano Device Laboratories, Hsinchu 300, Taiwan, R.O.C.

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