Open AccessRadiation properties of a whispering-gallery-mode fibre laser based on skew light pumping
Author(s) -
Yuanxian Zhang,
Feng Yong-Li,
Zhou Li,
Ximing Pu
Publication year - 2010
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.59.1802
Subject(s) - lasing threshold , whispering gallery wave , optics , wavelength , laser , materials science , cladding (metalworking) , refractive index , radiation , physics , metallurgy
The radiation properties of a whispering-gallery-mode WGM fibre laser based on skew beam pumping have been studied. It is found from experiment that when pumped by skew light along the fibre’s axis, both transverse electric wave TE and transverse magnetic wave TM exist in WGM lasing emission simultaneitly. With the increase of refractive index of cladding dye solution, the wavelength spacing between TE and TM waves of which the radial mode number and angular mode number are the same value decreases, and the central lasing wavelength of WGM bluely shifts to short wavelength direction. Based on radiation theory of WGM fibre laser and a model of four-energy levels of dye laser, the obtained experimental results are well explained.