CdTe/CdS Quantum Dots: Effective Saturable Absorber for Visible Lasers

We report on passive Q-switching of diode-pumped Pr:YLF visible lasers at 721 nm, 640 nm and 607 nm using CdTe/CdS quantum dot as saturable absorber. At the three wavelengths, the maximum average output powers and the shortest pulse widths are (38.7 mW, 235 ns), (48.3 mW, 226 ns), and (39.6 mW, 295...

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Bibliographic Details
Published inIEEE journal of selected topics in quantum electronics Vol. 23; no. 5; pp. 1 - 7
Main Authors Xu, Bin, Luo, Saiyu, Yan, Xigun, Li, Jingzhou, Lan, Jinglong, Luo, Zhengqian, Xu, Huiying, Cai, Zhiping, Dong, Hongxing, Wang, Jun, Zhang, Long
Format Journal Article
LanguageEnglish
Published IEEE 01.09.2017
Subjects
Laser excitation
Measurement by laser beam
Passive Q switching
Power generation
Power lasers
Pump lasers
Quantum dot lasers
quantum dots
saturable absorber
visible laser
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Summary:We report on passive Q-switching of diode-pumped Pr:YLF visible lasers at 721 nm, 640 nm and 607 nm using CdTe/CdS quantum dot as saturable absorber. At the three wavelengths, the maximum average output powers and the shortest pulse widths are (38.7 mW, 235 ns), (48.3 mW, 226 ns), and (39.6 mW, 295 ns), respectively. The laser results represent the best laser performance of nano-material based Q-switched Pr 3+ visible lasers, to the best of our knowledge. CdTe/CdS quantum dot could be very promising in generating ultrashort pulse visible lasers.
ISSN:1077-260X
1558-4542
DOI:10.1109/JSTQE.2016.2630277