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The complex degree of self-coherence is introduced to quantify the coherence of supercontinuum generated by the same long pulse, and experiments are performed. The coherence properties of supercontinuum generated in the photonic crystal fiber pumped by 700 ps pulse are measured using the Mach-Zehnder interferometer. The experimental results show that the coherence lengths of different wavelength parts of the supercontinuum are all longer than 40 m, and can reach 225 m in the long wavelength region. The coherence degrees of different parts of supercontinuum are not the same; however, the mean coherence degree over the supercontinuum is 0.461 which manifests good coherence property of the whole spectrum of supercontinuum. Consequently, requirements of many applications such as optical measurement and optical sensing can be satisfied.
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Keywords:
- coherence property /
- supercontinuum /
- complex degree of self-coherence /
- Mach-Zehnder interferometer
[1] Hartl I, Li X D, Chudoba C, Ghanta R K, Ko T H, Fujimoto J G, Ranka J K, Windeler R S 2001 Opt. Lett. 26 608
[2] Takara H, Ohara T, Mori K, Sato K, Yamada E, Inoue Y, Shibata T, Abe M, Morioka T, Sato K I 2000 Electronics Lett. 36 2089
[3] Nisoli M, De Silvestri S, Svelto O 1996 Appl. Phys. Lett. 68 2793
[4] Diddams S A, Jones D J, Ye J, Cundiff S T, Hall J L, Ranka J K, Windeler R S, Holzwarth R, Udem T, Auml, Nsch T W 2000 Phys. Rev. Lett. 84 5102
[5] Gu X, Kimmel M, Shreenath A, Trebino R, Dudley J, Coen S, Windeler R 2003 Opt. Express 11 2697
[6] Lu F, Knox W 2004 Opt. Express 12 347
[7] Türke D, Pricking S, Husakou A, Teipel J, Herrmann J, Giessen H 2007 Opt. Express 15 2732
[8] Guo Y, Ruan S C, Yu Y Q, Wang Y C 2007 Journal of Shenzhen University Science and Engineering 24 149
[9] Nicholson J W, Yablon A D, Yan M F, Wisk P, Bise R, Trevor D J, Alonzo J, Stockert T, Fleming J, Monberg E, Dimarcello F, Fini J 2008 Opt. Lett. 33 2038
[10] Dudley J M, Coen S 2002 IEEE Journal of Selected Topics in Quantum Electronics 8 651
[11] Dudley J M, Coen S 2002 Opt. Lett. 27 1180
[12] Genty G, Surakka M, Turunen J, Friberg A T 2010 Opt. Lett. 35 3057
[13] Jin A J, Wang Z F, Hou J, Wang Y B, Jiang Z F 2012 Acta Phys. Sin. 61 124211 (in Chinese) [靳爱军, 王泽锋, 侯静, 王彦斌, 姜宗福 2012 物理学报 61 124211]
[14] Ji J R 2007 Advanced Optics-Fundamental Electromagnetic Theory of Optics (Beijing: Science Press) p256 (in Chinese) [季家镕 2007 高等光学教程—光学的基本电磁理论 (北京: 科学出版社) 第256页]
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[1] Hartl I, Li X D, Chudoba C, Ghanta R K, Ko T H, Fujimoto J G, Ranka J K, Windeler R S 2001 Opt. Lett. 26 608
[2] Takara H, Ohara T, Mori K, Sato K, Yamada E, Inoue Y, Shibata T, Abe M, Morioka T, Sato K I 2000 Electronics Lett. 36 2089
[3] Nisoli M, De Silvestri S, Svelto O 1996 Appl. Phys. Lett. 68 2793
[4] Diddams S A, Jones D J, Ye J, Cundiff S T, Hall J L, Ranka J K, Windeler R S, Holzwarth R, Udem T, Auml, Nsch T W 2000 Phys. Rev. Lett. 84 5102
[5] Gu X, Kimmel M, Shreenath A, Trebino R, Dudley J, Coen S, Windeler R 2003 Opt. Express 11 2697
[6] Lu F, Knox W 2004 Opt. Express 12 347
[7] Türke D, Pricking S, Husakou A, Teipel J, Herrmann J, Giessen H 2007 Opt. Express 15 2732
[8] Guo Y, Ruan S C, Yu Y Q, Wang Y C 2007 Journal of Shenzhen University Science and Engineering 24 149
[9] Nicholson J W, Yablon A D, Yan M F, Wisk P, Bise R, Trevor D J, Alonzo J, Stockert T, Fleming J, Monberg E, Dimarcello F, Fini J 2008 Opt. Lett. 33 2038
[10] Dudley J M, Coen S 2002 IEEE Journal of Selected Topics in Quantum Electronics 8 651
[11] Dudley J M, Coen S 2002 Opt. Lett. 27 1180
[12] Genty G, Surakka M, Turunen J, Friberg A T 2010 Opt. Lett. 35 3057
[13] Jin A J, Wang Z F, Hou J, Wang Y B, Jiang Z F 2012 Acta Phys. Sin. 61 124211 (in Chinese) [靳爱军, 王泽锋, 侯静, 王彦斌, 姜宗福 2012 物理学报 61 124211]
[14] Ji J R 2007 Advanced Optics-Fundamental Electromagnetic Theory of Optics (Beijing: Science Press) p256 (in Chinese) [季家镕 2007 高等光学教程—光学的基本电磁理论 (北京: 科学出版社) 第256页]
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