We investigate the heating of silicon nanoparticles due to absorption of light at 1550 nm wavelength. We conclude that the strong temperature dependence of the absorption processes in silicon leads to a thermal runaway effect, destroying the particle once it reaches a critical temperature under intense irradiation. Our results bear relevance for recent proposals to use silicon particles for levitodynamics experiments.
Optical absorption of subwavelength silicon nanoparticles at telecom wavelengths
Carlon Zambon N.;
2025
Abstract
We investigate the heating of silicon nanoparticles due to absorption of light at 1550 nm wavelength. We conclude that the strong temperature dependence of the absorption processes in silicon leads to a thermal runaway effect, destroying the particle once it reaches a critical temperature under intense irradiation. Our results bear relevance for recent proposals to use silicon particles for levitodynamics experiments.
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