Tunable in situ Near-UV Pulses by Transient Plasmonic Resonance in Nanocomposites
Anton HusakouMax Born Institute , Max Born Str. 2a , 12489 Berlin , GermanyИ. БабушкинО. М. ФедотоваScientific and Practical Materials Research Center , Belarus NAS , Brovky 17 , 220072 Minsk , BelarusRyhor RusetskyО. Х. ХасановScientific and Practical Materials Research Center , Belarus NAS , Brovky 17 , 220072 Minsk , BelarusTatsiana SmirnovaBelarus State University , Niezalieznasci avenue 4 , 220030 Minsk , BelarusAlexander FedotovBelarus State University , Niezalieznasci avenue 4 , 220030 Minsk , BelarusУ. К. СапаевTashkent State Technical University , 2 uy 2 Qatartol ko'chasi , 100097 Tashkent , UzbekistanTzveta ApostolovaInstitute for Advanced Physical Studies , New Bulgarian University , 1618 Sofia , Bulgaria
2023en
ABI
Annotatsiya
We propose a new concept for generation of ultrashort pulses based on transient plasmonic resonance in nanoparticle composites. Photoionization and free-carriers plasma change the susceptibility of nanoparticles on a few-femtosecond scale. This results in a narrow time window during the pump pulse duration when the system is in plasmonic resonance, accompanied by a short burst of the local field. During this process, frequency-tunable few-fs pulses are generated. We elucidate the details of the above mechanism, and investigate the influences of different contributing processes.
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