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Dive into the research topics where Yu Haohai is active.

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Featured researches published by Yu Haohai.


Chinese Physics Letters | 2015

Temperature-Dependent Fluorescence Properties and Diode-Pumped Deep Red Laser Performance of Pr:LiGdF4 Crystal*

Zhang Yuxia; Wang Shuxian; Lieto Di Alberto; Yu Guolei; Yu Haohai; Zhang Huaijin; Tonelli Mauro; Xu Xiangang; Wang Jiyang

We demonstrate the temperature-dependent fluorescence properties of Pr:LiGdF4 crystal for the first time, to the best of our knowledge, and its blue diode pumped cw red laser at 720 nm at room temperature. The fluorescence lifetime and polarized emission cross sections in the visible range are measured and calculated in a temperature range from 77 K to 300 K, and the variations of the fluorescence lifetime and spectra are discovered. The reasons for these changes are explained accordingly. The output wavelength of the 720 nm laser is first reported on the laser performance by using a fiber-coupled laser diode at the wavelength of 442 nm as the pump source, and the maximum cw output power is about 303 mW.


Chinese Physics Letters | 2015

Observation of Self-Frequency Doubling in Diode-Pumped Mode-Locked Nd-Doped La3Ga5SiO14 Laser

Liu Jiaxing; Wang Zhao-Hua; Tian Wenlong; Wang Qing; Zhang Zhi-Guo; Wei Zhiyi; Yu Haohai; Zhang Huaijin; Wang Jiyang

A diode-pumped passively mode-locked Nd-doped La3Ga5SiO14 (Nd:LGS) laser is realized by using a semiconductor saturable absorber mirror. With the pump power of 2 W, we obtain a 532 nm self-frequency doubling (SFD) laser together with a 10.9 ps fundamental laser at the repetition rate of 173.7 MHz. To the best of our knowledge, it is the first time for self-frequency doubling in the diode-pumped mode-locked Nd:LGS laser. Benefited from the diode lasers and its self-frequency doubling property, Nd:LGS could be a potential candidate for compact, stable and cheap ultrafast green laser sources.


Optical and Quantum Electronics | 2016

グラフェンの可飽和吸収体によるYb:YGG,Yb:LuGGおよびYb:CNGGレーザのQスイッチング

Serres Josep Maria; Loiko Pavel; Mateos Xavier; Yu Haohai; Zhang Huaijin; Liu Jun-Hai; Yumashev Konstantin; Griebner Uwe; Petrov Valentin; Aguilo Magdalena; Diaz Francesc


Archive | 2014

Passive Q-switched laser based on nonlinear optical material molybdenum disulfide

Wang Pu; Ren Jun; Zhang Huaijin; Yu Haohai; Wang Shuxian; Chen Yan-Xue; Mei Liangmu


Archive | 2013

Topological insulator pulse modulator and pulse-modulated laser for all-solid-state laser light

Yu Haohai; Zhang Huaijin; Wang Jiyang; Zhang Han; Zhao Chujun; Wen Shuang-Chun


Archive | 2012

Vector light field converter and polarized light converting method

Yu Haohai; Wang Yicheng; Zhang Huaijin; Wang Zhengping; Wang Jiyang


Archive | 2013

Device for judging optimal thermal balance running condition of self frequency conversion crystal

Xu Zuyan; Han Lin; Zong Nan; Peng Qinjun; Wang Jiyang; Zhang Huaijin; Yu Haohai; Wang Zhengping


Archive | 2013

Raman laser based on crystalline in fresnoite structure

Zhang Huaijin; Wang Jiyang; Shen Chuanying; Zhao Xian; Wang Zhengping; Zhao Yongguang; Yu Haohai


Archive | 2015

Preparation method of composite laser crystal in garnet structure

Zhang Huaijin; Wu Kui; Yu Haohai; Wang Jiyang


Archive | 2014

Red and green laser based on laser crystal, frequency doubling crystal and self-frequency-doubling crystal

Ma Changqin; Yu Haohai; Han Xuekun; Zhang Huaijin; Wang Jiyang; Lu Qingming; Yan Dong

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Peng Qinjun

Chinese Academy of Sciences

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Xu Zuyan

Chinese Academy of Sciences

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Zong Nan

Chinese Academy of Sciences

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