Open AccessStudy of cascaded raman scattering laser in silica microsphere pumped by 976 nm laser
Author(s) -
Peijin Zhang,
Yu Huang,
Changlei Guo,
Yantang Huang
Publication year - 2013
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.62.224207
Subject(s) - materials science , laser , raman spectroscopy , raman scattering , optics , whispering gallery wave , fiber laser , optoelectronics , laser power scaling , laser pumping , longitudinal mode , wavelength , resonator , physics
High-quality-factor microspheres with smooth surface are fabricated through surface tension by heating and fusing a single tapered fiber using arc of electrodes discharge. Stimulated Raman scattering of the third order nonlinear phenomena of microspheres with high power density whispering gallery modes was studied by coupling 976 nm laser into microspheres through tapered fiber as evanescent wave. The total six cascaded Raman lasers were observed in the experiment. At each order, single longitudinal mode and multi longitudinal mode Raman lasers were observed. The Raman laser at around 1200 nm was measured with pump power less than 582.6 μW. The sixth-order Raman laser at around 1287.04 nm was observed when pump power is 3.014 mW.