Temporal dynamics of two-photon-pumped amplified spontaneous emission in slab organic crystals

被引：13

作者：

Fang, Hong-Hua ^{[1
]}

Chen, Qi-Dai ^{[1
]}

Ding, Ran ^{[1
]}

Yang, Jie ^{[1
]}

Ma, Yu-Guang ^{[2
]}

Wang, Hai-Yu ^{[1
]}

Gao, Bing-Rong ^{[1
]}

Feng, Jing ^{[1
]}

Sun, Hong-Bo ^{[1
,3
]}

机构：

[1] Jilin Univ, Coll Elect Sci & Engn, State Key Lab Integrated Optoelect, Changchun 130012, Peoples R China

[2] Jilin Univ, Coll Chem, State Key Lab Supramol Struct & Mat, Changchun 130012, Peoples R China

[3] Jilin Univ, Coll Phys, Changchun 130023, Peoples R China

来源：

OPTICS LETTERS | 2010年 / 35卷 / 15期

基金：

中国国家自然科学基金;

关键词：

SINGLE-CRYSTALS; STIMULATED-EMISSION; VINYLENE); FILMS;

D O I：

10.1364/OL.35.002561

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We have studied the ultrafast dynamics of two-photon-pumped amplified spontaneous emission (ASE) from a single crystal by the time-resolved fluorescence upconversion technique. With the increase of two-photon pump intensities, the emission decay time is dramatically shortened by 30 times (from 3 ns to similar to 87 ps), and the energy migration rate is acutely enhanced when ASE occurs. The stripe length is also found to play an important role in the formation of the ASE. Meanwhile, the gain coefficient is evaluated to be 15 cm(-1) for 560 nm at an excitation intensity of 2.3 mJ/pulse/cm(2) by the variable stripe length technique. (C) 2010 Optical Society of America

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收藏

页码：2561 / 2563

页数：3

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