Yu. N. Kulchin, A. Yu. Maior, D. Yu. Proschenko, A. A. Chekhlenok, I. V. Postnova, S. S. Golik, O. A. Bukin, Yu. A. Shchipunov, “Threshold energies for filamentation and spectral characteristics of supercontinuum generation in THEOS-based nanocomposite organosilicon media”, Kvantovaya Elektronika, 2014, Volume 44, Number 8,Pages <nobr>793

This article is cited in 4 papers

Superstrong light fields

Threshold energies for filamentation and spectral characteristics of supercontinuum generation in THEOS-based nanocomposite organosilicon media

Yu. N. Kulchin^a, A. Yu. Maior^a, D. Yu. Proschenko^ab, A. A. Chekhlenok^a, I. V. Postnova^cb, S. S. Golik^ab, O. A. Bukin^d, Yu. A. Shchipunov^c

^a Institute for Automation and Control Processes, Far Eastern Branch of the Russian Academy of Sciences, Vladivostok
^b Far Eastern Federal University, Vladivostok
^c Institute of Chemistry, Far East Branch of the Russian Academy of Sciences, Vladivostok
^d Maritime State University named after G. I. Nevelskoi, Vladivostok

Abstract: We have experimentally determined the threshold energy for filamentation in THEOS-based hybrid silicate nanocomposite materials containing polysaccharides and hyperbranched polyglycidols and the conversion efficiency from the 800-nm femtosecond Ti : sapphire laser output to a supercontinuum in the range 420 – 700 nm. The addition of sodium hyaluronate (polysaccharide) and low concentrations of Au nanoparticles or CdS quantum dots with an average diameter of 3 – 5 nm has been shown to considerably reduce the threshold energy for filamentation and improve the laser output to supercontinuum conversion efficiency.

Keywords: femtosecond laser, filamentation, supercontinuum, conical emission, gold nanoparticles, CdS quantum dots.

PACS: 42.65.Jx, 42.65.Re, 78.67.Bf

Received: 10.04.2014