title: Investigation of stimulated Brillouin scattering media perfluoro-compound and perfluoropolyether with a low absorption coefficient and high power-load ability.
abstract: The correlations between stimulated Brillouin scattering (SBS) characteristics of perfluoro-compound (PFC) and perfluoropolyether (PFPE) and their chemical structure are analyzed in detail and a series of new PFC and PFPE are reported. In the Nd:YAG laser system, the absorption coefficient, optical breakdown threshold (OBT), SBS threshold, and Brillouin frequency shift of new media such as FC-87, FC-43, HT-55, and DET are measured. Parameters such as gain coefficient, Brillouin linewidth, and phonon lifetime are calculated. The results demonstrate their good SBS properties: the absorption coefficients are below 10(-3)cm(-1) and OBTs are above 100 GW/cm(2). These media also exhibit a series of unique physicochemical properties, i.e., high heat-resistance, high oxidation stability, good chemical inertness, and insulation properties. The discovery of new media not only diversifies SBS medium, but also improves the performance of the SBS system, thereby laying a good foundation for the application of a SBS phase conjugation mirror in a high-power laser system.
authors.affiliation: Institute of Opto-electronics, Harbin Institute of Technology, Harbin 150001, China.
authors.forename: W L J
authors.initials: WL
authors.lastname: Hasi
authors.forename: Z W
authors.initials: ZW
authors.lastname: Lu
authors.forename: S
authors.initials: S
authors.lastname: Gong
authors.forename: S J
authors.initials: SJ
authors.lastname: Liu
authors.forename: Q
authors.initials: Q
authors.lastname: Li
authors.forename: W M
authors.initials: WM
authors.lastname: He