Broadband optical wavelength conversion through four-wave mixing in W3-type AlGaAs photonic crystal waveguides
APPLIED PHYSICS EXPRESS(2023)
摘要
We realized a wide-band wavelength conversion method through four-wave mixing in W3-type AlGaAs photonic crystal waveguides. AlGaAs exhibits a large third-order nonlinearity. Furthermore, because of its large bandgap, two-photon absorption can be avoided in the 1550 nm range. A four-wave mixing efficiency of -7 dB was obtained for a pump peak power of 7 W. Furthermore, by utilizing the two even guided bands of the W3-type photonic crystal waveguide, a conversion bandwidth greater than 38 nm was achieved with a conversion efficiency of -22 dB.
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关键词
photonic crystal waveguide,four-wave mixing,nonlinear optics
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