Open AccessГенерация суперконтинуума в режиме филаментации в водяной капле с наночастицами серебра при низкой температуре
Author(s) -
Н.А. Мыслицкая,
А.В. Цибульникова,
В. А. Слежкин,
И. Г. Самусев,
Ю.Н. Антипов,
В.В. Брюханов
Publication year - 2020
Publication title -
žurnal tehničeskoj fiziki
Language(s) - English
Resource type - Journals
eISSN - 1726-748X
pISSN - 0044-4642
DOI - 10.21883/os.2020.12.50316.351-20
Subject(s) - supercontinuum , materials science , femtosecond , wavelength , drop (telecommunication) , radiation , heat transfer , optics , laser , fluorescence , optoelectronics , physics , photonic crystal fiber , mechanics , telecommunications , computer science
The supercontinuum generation in water droplets with nanoparticles of citrate silver in the temperature range of 2–22 °C, as well as in the ice droplets frozen to −15.0 °C, has been studied. It was found that the intensity of the supercontinuum emission under the excitation by a train of femtosecond laser pulses exponentially decays along the droplet diameter and it increases linearly with increasing NP concentration. The emission spectrum of supercontinuum in water droplet with NPs and the generation of localized plasmons with fluorescence at the 430 nm wavelength was studied. The movement of a heat wave along the diameter of a small frozen drop with a speed of 190 mm / s accompanying exponentially decaying supercontinuum radiation was recorded. The modeling of heat transfer processes in the frozen droplet during the formation of a heat wave has been carried out.