Abstract
We report a particular construction of a laser-driven blackbody radiator with bistability mode based on efficient light-into-heat conversion of a rare earth system. The laser-induced thermal avalanche nonlinearity and the internal stimulative feedback mechanisms are revealed to interpret the typical S-pattern bistability. The standard blackbody radiation and the sizable bistability mode are experimentally demonstrated through ultrabroadband thermal spectra measurements of ZrO2:Yb–Tm nanophase compounds. Such a noncontact, laser-driven scheme for microscale blackbody radiation has attractive applications for compact standard spectra source and broadband spectra switching in the on-chip all-optical systems.
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