Optical Kerr Signals Markedly Enhanced by Increasing Quality Factor in a GaAs/AlAs Multilayer Cavity
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概要
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Optical Kerr signals markedly enhanced by increasing quality ($Q$) factor in a GaAs/AlAs multilayer cavity have been demonstrated using time-resolved optical measurements. In the optical Kerr measurements, the spectral width of a laser pulse was well tuned to the peak of the cavity mode using the wavelength-restricted optical system. Although the $Q$ of a 30-pair cavity is only 1.6 times larger than that of a 26-pair cavity, the optical Kerr signal intensity of the 30-pair cavity is 10 times larger than that of the 26-pair cavity. We have revealed that the optical Kerr signal of the GaAs/AlAs multilayer cavity is markedly enhanced nearly proportional to the $Q^{4}$ as a result of the enhanced nonlinear phase shift owing to the strong internal optical field and the long photon lifetime of the cavity-mode light.
- 2011-04-25
著者
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Morita Ken
Center For Frontier Research Of Engineering Institute Of Technology And Science The University Of To
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Takahashi Tomoya
Center For Frontier Research Of Engineering Institute Of Technology And Science The University Of To
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Isu Toshiro
Center For Frontier Research Of Engineering Institute Of Technology And Science The University Of To
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Kitada Takahiro
Center For Frontier Research Of Engineering Institute Of Technology And Science The University Of To
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