Ultrafast spectroscopy of semiconductor saturable absorber mirror

被引：3
|
作者：
Zhang, Jing [1 ,2 ,3 ]
Bauer, Dominik [2 ,3 ]
Koenig, Farina [2 ,3 ]
Dekorsy, Thomas [2 ,3 ]
Zhang, Xihe [1 ]
Chen, Yafu [1 ]
机构：
[1] Changchun Univ Sci & Technol, Dept Phys, Changchun 130022, Peoples R China
[2] Univ Konstanz, Dept Phys, Constance, Germany
[3] Univ Konstanz, Ctr Appl Photon, Constance, Germany
来源：
CHINESE OPTICS LETTERS | 2010年 / 8卷 / 07期
关键词：
2-PHOTON ABSORPTION; DYNAMICS; EXCITATION; LASERS;
D O I：
10.3788/COL20100807.0676
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Ultrafast spectroscopy of semiconductor saturable absorber mirror (SESAM) is measured using a femtosecond pump-probe experiment. This allows dynamic responses of SESAM in the cavity to be concluded by ultrafast spectroscopy. Change in reflection is measured as a function of pump-probe delay for different pump excitation fluences. Change of nonlinear reflection of SESAM is measured as a function of incident light energy density. When the excitation fluence increases, nonlinear change in ultrafast spectroscopy of SESAM becomes increasingly significant. When SESAM is pumped by an ultrahigh excitation fluence, the energy density of which is approximately 1400 mu J/cm(2), two-photon absorption can be observed visibly in its ultrafast spectroscopy.
引用
收藏
页码：676 / 679
页数：4
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