Two-photon pumped lasing in a single CdS microwire

被引：23
|
作者：
Zhang, Lichao [1 ,2 ]
Wang, Kai [1 ,2 ,3 ]
Liu, Zhe [1 ,2 ]
Yang, Guang [1 ,2 ]
Shen, Guozhen [1 ,2 ]
Lu, Peixiang [1 ,2 ,3 ]
机构：
[1] Huazhong Univ Sci & Technol, Wuhan Natl Lab Optoelect, Wuhan 430074, Peoples R China
[2] Huazhong Univ Sci & Technol, Sch Phys, Wuhan 430074, Peoples R China
[3] Minist Educ, Key Lab Fundamental Phys Quant Measurement, Wuhan 430074, Peoples R China
来源：
APPLIED PHYSICS LETTERS | 2013年 / 102卷 / 21期
关键词：
ROOM-TEMPERATURE; QUANTUM DOTS; NANORIBBONS; MODES;
D O I：
10.1063/1.4809537
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We report the two-photon absorption induced lasing performance in a single CdS microwire under the excitation of a femtosecond pulse laser with a wavelength of 800 nm. Sharp lasing peaks are centered at 523 nm with an average linewidth of 0.4 nm, indicating a high quality factor of 1300. The lasing emission is highly dependent on the polarization direction of the excitation light and the optimized lasing threshold is estimated to be 3.3 mJ/cm(2) as the polarization direction is parallel to the microwire axis. Furthermore, the polarization-dependent lasing effect is confirmed by performing the finite-difference time-domain method. (C) 2013 AIP Publishing LLC.
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页数：4
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