Tunable in situ near-UV pulses by transient plasmonic resonance in nanocomposites
Anton HusakouИ. БабушкинInstitute of Quantum Optics, Leibnitz Hannover UniversityО. М. ФедотоваScientific and Practical Materials Research CenterRyhor RusetskyScientific and Practical Materials Research CenterTatsiana SmirnovaBelarus State UniversityО. Х. ХасановScientific and Practical Materials Research CenterAlexander FedotovBelarus State UniversityУ. К. СапаевTashkent State Technical UniversityTzveta ApostolovaBulgarian Academy of Sciences
ABI
Аннотация
We propose a concept for generation of ultrashort pulses based on transient field-induced plasmonic resonance in nanoparticle composites. Photoionization and free-carrier plasma generation change the susceptibility of nanoparticles on a few-femtosecond scale under the action of the pump pulse. This opens a narrow time window when the system is in plasmonic resonance, which is accompanied by a short burst of the local field. During this process, frequency-tunable few-fs pulses can be emitted. This paves a way to ultra-compact yet efficient generation of ultrashort pulses at short wavelengths.
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