Dispersion compensation in an Yb-doped fiber oscillator for generating transform-limited, wing-free pulses

被引：11
|
作者：
Kurita, Takashi [1 ,2 ,3 ]
Yoshida, Hidetsugu [1 ]
Furuse, Hiroaki [4 ]
Kawashima, Toshiyuki [2 ,3 ]
Miyanaga, Noriaki [1 ,3 ]
机构：
[1] Osaka Univ, Inst Laser Engn, Suita, Osaka 5650871, Japan
[2] Hamamatsu Photon KK, Nishi Ku, Hamamatsu, Shizuoka 4311202, Japan
[3] Japan Sci & Technol Agcy, CREST, Suita, Osaka 5650871, Japan
[4] Inst Laser Technol, Suita, Osaka 5650871, Japan
来源：
OPTICS EXPRESS | 2011年 / 19卷 / 25期
关键词：
LASER; SOLITON;
D O I：
10.1364/OE.19.025199
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We investigate the effect of dispersion compensation on temporal characteristics in mode-locking by nonlinear polarization rotation in an ytterbium-doped fiber (YDF) oscillator with intracavity and external grating pairs. A short fixed length YDF was spliced with a longer single-mode fiber (SMF). Using experimentally measured dispersion characteristics of the YDF, SMF and cavity optics, we control the group velocity dispersion (GVD) and spectral broadening in a cavity by changing the SMF length. As a result, the oscillator generated 29.4-fs transform-limited wing-free pulses, which are to our knowledge the shortest and cleanest pulses achieved without the use of additional optics like a prism pair for high-order dispersion compensation. The results show that a precise balance of higher order terms of the GVD and self-phase modulation is essential for shortening pulse duration. (C) 2011 Optical Society of America
引用
收藏
页码：25199 / 25205
页数：7
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