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研究了偏斜光线抽运下的回音壁模式光纤激光辐射特性．实验发现，在抽运光以偏斜光线方式沿光纤的近轴向抽运时，回音壁模式的光纤激光辐射中，既存在光电矢量和光纤径向垂直的横电波（TE），也存在光电矢量和光纤径向平行的横磁波（TM）；随增益包层染料溶液折射率的增加，径向模式数和角模式数相同的TE波和TM波之间的波长差单调减小，回音壁模式激光辐射的中心波长向短波方向移动，辐射的波长范围变窄．用回音壁模式激光的辐射理论结合激光染料的四能级模型，满意地解释了实验结果．
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关键词:
- 光纤激光器 /
- 回音壁模式 /
- 中心波长漂移 /
- TE和TM波的波长差
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.-
Keywords:
- fibre laser /
- whispering-gallery-mode /
- wavelength shift /
- wavelength spacing between TE & TM waves
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[2] ［2］Li Y M, Liu Q, Tian X T, Zhang K S 2009 Chin. Phys. B 18 2324
[3] ［3］Yang Y D, Huang Y Z, Chen Q 2007 Phys. Rev. A 75 013817-1
[4] ［4］Vernooy D W, Furusawa A, Georgiades N Ph, Hchenko V S, Kimble H J 1998 Phys. Rev . A 57 R2293
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[7] ［7］Vahala K J 2003 Nature 424 839
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[14] ］Feng X, Liu Y, Liu X M, Zhang W 2009 Acta Phys. Sin. 58 2971 （in Chinese）［冯雪、刘越、刘小明、张巍 2009 58 2971 ］
[15] ］Moon H J, Chough Y T, An K 2000 Phys. Rev. Lett. 85 3161
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[19] ］Han D Y, Pu X Y, Jiang N, Feng Y L, Zhu K, Zhang Y X 2009 Chin. Sci. Bull. 54 3259 （in Chinese）［韩德昱、普小云、江楠、冯永利、祝昆、张远宏 2009 科学通报 54 3259］
[20] ］Djafar K M, Lowell L S 2002 Fiber-Optic Communications Technology （Beijing: Science Press, 2002）
[21] ］Wang D L, Jiang N, Jiang L Q, Pu X Y 2008 Spectroscopy and Spectral Analysis 28 2749 （in Chinese）［王东林、江楠、姜利群、普小云 2008 光谱学与光谱分析 28 2749］
[22] ］Xiang W L, Pu X Y, Bai R, Zhang Y X, Jiang N 2008 Acta Opt. Sin. 28 2359 （in Chinese）［向文丽、普小云、白然、张远宪、江楠 2008 光学学报 28 2359］
[23] ］Bohren C F, Huffman D R 1998 Absorption and Scattering of Light by Small Particles （Wiley 1998）
[24] ］Chang S, Rex N B, Chang R K1999 J. Opt. Soc. of Am. B 161 224
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[26] ］Chio Y S, Moon H J, An K 2001 J. Phys. Soc. Korean 39 928
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[1] ［1］Wu Y，Yang X, Leung P T 1999 Opt. Lett. 24 345
[2] ［2］Li Y M, Liu Q, Tian X T, Zhang K S 2009 Chin. Phys. B 18 2324
[3] ［3］Yang Y D, Huang Y Z, Chen Q 2007 Phys. Rev. A 75 013817-1
[4] ［4］Vernooy D W, Furusawa A, Georgiades N Ph, Hchenko V S, Kimble H J 1998 Phys. Rev . A 57 R2293
[5] ［5］Gmachal C, Capasso F, Narimanov E E 1998 Science 280 1556
[6] ［6］Spillane S M, Kippenberg T J, Vahala K J 2002 Nature 415 621
[7] ［7］Vahala K J 2003 Nature 424 839
[8] ［8］Vollmer F, Braun D, Libchaber A 2002 Appl. Phys. Lett. 80 4057
[9] ［9］Cole R M, Sugawara Y, Baumberg J J 2006 Phys. Rev. Lett. 97 137401-1
[10] ］Pu X Y, Lee W K 2000 Opt. Lett. 25 466
[11] ］Wu Y, Leung P T 1999 Phys. Rev.A 60 630
[12] ］Wu Y 2000 Phys. Rev. A 61 0338034
[13] ］Wu Y, Yang X 2001 J. Phys. B 34 2281
[14] ］Feng X, Liu Y, Liu X M, Zhang W 2009 Acta Phys. Sin. 58 2971 （in Chinese）［冯雪、刘越、刘小明、张巍 2009 58 2971 ］
[15] ］Moon H J, Chough Y T, An K 2000 Phys. Rev. Lett. 85 3161
[16] ］Shevchenko A, Lindfors K, Buchter S C, Kaivola M 2005 Opt. Commun. 245 349
[17] ］Zhang Y X, Pu X Y, Zhu K, Han D Y, Jiang N 2009 Acta Phys. Sin. 58 3179 （in Chinese）［张远宪、普小云、祝昆、韩德昱、江楠 2009 58 3179］
[18] ］Pu X Y, Bai R, Xiang W L, Du F, Jiang N 2009 Acta Phys. Sin. 58 3923 （in Chinese）［普小云、白然、向文丽、杜飞、江楠 2009 58 3923］
[19] ］Han D Y, Pu X Y, Jiang N, Feng Y L, Zhu K, Zhang Y X 2009 Chin. Sci. Bull. 54 3259 （in Chinese）［韩德昱、普小云、江楠、冯永利、祝昆、张远宏 2009 科学通报 54 3259］
[20] ］Djafar K M, Lowell L S 2002 Fiber-Optic Communications Technology （Beijing: Science Press, 2002）
[21] ］Wang D L, Jiang N, Jiang L Q, Pu X Y 2008 Spectroscopy and Spectral Analysis 28 2749 （in Chinese）［王东林、江楠、姜利群、普小云 2008 光谱学与光谱分析 28 2749］
[22] ］Xiang W L, Pu X Y, Bai R, Zhang Y X, Jiang N 2008 Acta Opt. Sin. 28 2359 （in Chinese）［向文丽、普小云、白然、张远宪、江楠 2008 光学学报 28 2359］
[23] ］Bohren C F, Huffman D R 1998 Absorption and Scattering of Light by Small Particles （Wiley 1998）
[24] ］Chang S, Rex N B, Chang R K1999 J. Opt. Soc. of Am. B 161 224
[25] ］Lam C C, Leung P T, Yang K 1992 J. Opt. Soc. Am. B 9 1585
[26] ］Chio Y S, Moon H J, An K 2001 J. Phys. Soc. Korean 39 928
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