Research of mode selection in a coiled Yb3+ doped multimode double clad fiber laser
-
Received Date:
2006-09-19
Accepted Date:
2007-01-25
-
Abstract
In order to realize the monomode output in large core multimode double-clad fiber laser to suppress the nonlinear effects in high power double-clad fiber lasers,mode selection by bending the large core multimode double-clad fiber to a suitable radius was used.Theoretical analysis and experiments about mode selection in large core multimode double-clad fiber laser were demonstrated in this paper.Factors that influence the laser bending loss and output mode,such as inner-clad refractive index,core radius,laser wavelength,bending radius,were obtained.Monomode output was obtained from multimode double-clad fiber laser by bending the homemade Yb3+-doped large core multimode fiber.The laser has a fundamental mode output with power of 9W,conversion efficiency of 17.3%.The research is useful in mode selection from large core multimode double-clad fiber laser.
-
-
References
[1]
|
ORTAC B,HIDEUR A,CHARTIER T.Influence of cavity losses on stimulated brillouin scattering in a self-pulsing side-pumped ytterbium-doped double-clad fiber laser[J].Optics Commun,2003,215(6):389~395. |
[2]
|
HIEUR A,CHARTIER T,SANCHEZ F.Yb-doped double-clad fiber laser in a unidirectional ring cavity[J].SPIE,1998,4216:15~21. |
[3]
|
SHEN H,DING G L,WANG Y Sh et al.Simulation and experimental study of double-cladding Er-doped fiber lasers[J].Laser Technology,2006,31(1):70~72(in Chinese). |
[4]
|
OFFERHAUS H L,BRODERICK N G,RICHARDSON D J.High-energy single-transverse-mode Q-switched fiber laser based on a multimode large-mode-area erbium-doped fiber[J].Opt Lett,1998,23(21):1683~1685. |
[5]
|
GRIEBNER U,KOCH R,SCHÖNNAGEL H et al.Efficient laser operation with nearly diffraction-limited output from a diode-pumped heavily Nd-doped multimode fiber[J].Opt Lett,1996,21(4):266~268. |
[6]
|
SHI L,ZHAO Sh H,ZHOU W Y et al.Double-pass forward pumping broadband Er3+Yb3+ co-doped superfluorescent fiber source[J].Laser Technology,2006,30(2):148~151(in Chinese). |
[7]
|
WEAKLY D G.Guiding fibers[J].Appl Opt,1971,10(10):2252~2257. |
[8]
|
MARCUSE D.Curvature loss formula for optical fibers[J].J O S A,1976,66(3):216~220. |
[9]
|
MARCUSE D.Field deformation and loss caused by curvature of optical fibers[J].J O S A,1976,66(4):311~320. |
[10]
|
HE G Y,JIANG J X,LIU P.Theory of losses in bending of multi-mode fibers[J].Journal of Harbin University of Science and Technology,1997,2(5):91~96(in Chinese). |
[11]
|
LIU Y X,YANG X Y,CHEN X Q et al.Analysis of multimode fiber bending loss[J].Journal of Zhongshan University,2002,41(5):25~27(in Chinese). |
[12]
|
LIU J,FERDINAND P.Theoretical analysis of multimode fiber microbend attenuation and its application[J].Journal of Beijing University of Posts and Telecommunications,1994,17(1):56~60(in Chinese). |
[13]
|
DUES A L,SUNAK R D.Design consideration for minimization macrobending loss in erbium-doped fiber amplifiers[J].IEEE Photonics Technolohy Letters,1991,3(1):50~52. |
[14]
|
IJONMAAS.Beam-propagation analysis of loss in bent optical waveguides and fibers[J].J O S A,1983,73(12):1785~1791. |
-
-
Proportional views
-