Diode-pumped Q-switched and mode-locked Nd:Gd0.3Lu0.33Y0.37VO4 laser with EO modulator and single-walled carbon nanotube |
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| Authors: | Gang Zhang Shengzhi Zhao Kejian Yang Guiqiu Li Dechun Li Kang Cheng Chao Han Bin Zhao Yonggang Wang |
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| Institution: | 1. School of Information Science and Engineering, Shandong University, Jinan 250100, China;2. College of Chemistry and Chemical Engineering, Fuzhou University, Fuzhou 350108, China;3. Research Center for Applied Sciences, Academia Sinica, Taiwan, China |
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| Abstract: | By using both the single-walled carbon nanotube saturable absorber (SWCNT-SA) and the electro-optic (EO) modulator, the stably doubly Q-switched and mode-locked (QML) operation of Nd:Gd0.3Lu0.33Y0.37VO4 laser has been demonstrated. The QML laser characteristics such as the pulse width, single-pulse energy, etc., have been measured for different modulation frequencies of the EO modulator (fe) and reflectivity (R) of output coupler. In comparison with the solely passively QML laser with SWCNT-SA, the experimental results show that the doubly QML laser can generate more stable and shorter pulses with higher pulse energy. At 9.24 W pump power, fe=1 kHz and R=93.5%, the doubly QML laser has compressed the Q-switched envelope pulse width 88% and improved the mode-locked pulsed energy 55 times. |
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