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Please use this identifier to cite or link to this item: http://ir.ncue.edu.tw/ir/handle/987654321/11934

Title: Highly efficient femtosecond pulse stretching by tailoring cavity dispersion in erbium fiber lasers with an intracavity short-pass edge filter
Authors: Chen, Nan-Kuang;Liu, Feng-Zhou;Chuang, Hsiu-Po;Lai, Yinchieh;Yang, Shang-Da;Lin, Jim-Wein;Liaw, Shien-Kuei;Chang, Yu-Chung;Huang, Chen-Bin;Chi, Sien
Contributors: 電機工程學系
Date: 2011-08
Issue Date: 2012-07-03T01:48:49Z
Publisher: Optical Society of America
Abstract: We demonstrate highly efficient pulse stretching in Er 3+-doped femtosecond mode-locked fiber lasers by tailoring cavity dispersion using an intracavity short-pass edge filter. The cavity dispersion is preset at around zero to obtain the shortest pulsewidth. When the cutoff wavelength of the short-pass edge filter is thermo-optically tuned to overlap the constituting spectral components of mode-locked pulses, large negative waveguide dispersion is introduced by the steep cutoff slope and the total cavity dispersion is moved to normal dispersion regime to broaden the pulsewidth. The time-bandwidth product of the mode-locked pulse increases with the decreasing temperature at the optical liquid surrounding the short-pass edge filter. Pulse stretch ratio of 3.53 (623.8fs/176.8fs) can be efficiently achieved under a temperature variation of 4�C.
Relation: Optics Express, 19(17): 15879-15884
Appears in Collections:[電機工程學系] 期刊論文

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