期刊
IEEE JOURNAL OF QUANTUM ELECTRONICS
卷 44, 期 9-10, 页码 841-849出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/JQE.2008.924818
关键词
Integrated optics; microresonators; nonlinear optics; optical bistability
Optical bistable responses in AlGaAs-based photonic crystal cavities with Al fractions of 0.16 and 0.27 under a stationary condition are studied. An analysis of the experimental results with a one-dimensional etalon model indicates that the bistable response is primarily driven by optical nonlinearities that stem from a heat generation in two-photon absorption and in free-carrier absorption. A free-carrier plasma effect is not influential, which is a major difference from the case of Si photonic crystal cavities. The accumulation of heat enables the phase or index to significantly change. An estimate indicates that a high Q-factor is advantageous for driving bistability exclusively by the Kerr effect.
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