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The recent evolution of semiconductor nanodevices, including nanoresonators and metasurfaces, has provided active tunability of optical functionality by efficiently utilizing various mechanisms such as mechanical deformation, carrier concentration modulation, and a tunable liquid crystal medium. Among these ideas, thermally induced nonlinear light–matter interaction holds great potential to realize all-optical control of signal intensity with exceptionally large modulation depth. Here, we review recent innovations on all-optical photothermal control of resonant semiconductor nanophotonics devices by using pulse-excited transient modulation, the thermo-optic effect under continuous wave laser excitation, and chalcogenide phase change materials.
Nishida et al. (Wed,) studied this question.
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