Project supported by the National Key Technology Research and Development Program of the Ministry of Science and Technology of China(Grant No.2012BAC23B03);the National Key Basic Research Program of China(Grant No.2013CB922401);the National Natural Science Foundation of China(Grant No.11474002)
A high-energy femtosecond all ytterbium fiber amplifier based on a chirped-pulse amplification(CPA) technique at a repetition rate of 1 MHz seeded by a dispersion-management mode-locked picosecond broadband oscillat...
Project supported by the National Natural Science Foundation of China(Grant Nos.11322437 and 11574010);the National Basic Research Project of China(Grant No.2013CB922402)
The two-photon double ionization(TPDI) dynamics of helium by chirped attosecond pulses are theoretically studied by solving the two-electron time-dependent Schr o¨dinger equation in its full dimensions. We show tha...
Supported by the National Basic Research Program of China under Grant Nos 2013CB922201 and 2011CB808102, and the National Natural Science Foundation of China under Grant Nos 11174330, 11204356 and 11334009.
We experimentally investigate above-threshold ionization of xenon subject to chirped intense laser pulses. While for few-cycle laser pulses free of chirp, the Freeman resonance narrow peaks in the photoelectron spectr...
Supported by the National Natural Science Foundation of China under Grant No 61274094, the National Basic Research Program of China under Grant Nos 2013CB632803 and 2013CB632801, and the National Scientific Instrument Developing Project of China under Grant No 2011YQ13001802-04.
The confined longitudinal optical, transverse optical and interface phonon modes in chirped GaAs-AIGaAs superlattices grown on the (O01)-oriented GaAs substrate are studied by the micro-Raman spectroscopy. The phono...
partially supported by the National Basic Research Program of China (Grant No. 2011CB808101);the National Natural Science Foundation of China (NSFC) (Grant Nos. 61221064, 61078037, 11127901, 11134010);the International S&T Cooperation Program of China (Grant No. 2011DFA11300)
We develop a splicing technology of Ti:sapphire crystals for a high-energy chirped pulse amplifier laser system that can suppress the parasitic lasing to improve the amplification efficiency compared to a large-size s...
by the 973 Program of China(grants 2011CB301705 and 2012CB315701);the Open Fund of IPOC(BUPT),the NSFC Program of China(grants 61377037,61378028,and 61090393);the NCET Program(NCET-11-0069),and the Science Foundation for Youths of Sichuan Province(2013JQ0026).
A novel method for accurately measuring chromatic dispersion of optical fibers is proposed based on the use of chirped intensity-modulated signals.Unlike the conventional method,the proposed method utilizes the config...
This work was supported by the 973 Program of China(No.2011CB922002 and No.2013CB632704);the Knowledge Innovation Program of the Chinese Academy of Sciences(No.Y1 V2013 L11).
Ultrabroadband laser sources are highly desirable in a wide variety of modern science disciplines ranging from physics,chemistry and materials science to information communications and processing.Here we present the d...
supported by the National Natural Science Foundation of China(No.61078015);National "973" Program of China(No.2011CB311803);High Tech Program(No.2009AA063006);Program of Zhejiang Province(No.2010C31124);Zhejiang Provincial Natural Science Foundation of China(No.LQ12F05007);the Educational Program of Zhejiang Province(No.Y200909758)
We demonstrate a high-efficiency, high-power-nanosecond fiber laser-pumped broadband mid-infrared out- put based on a linearly chirped PPMgLN crystal. By using a linearly polarized pulsed Yb-doped fiber laser as the p...
Project supported by the National High Technology Research and Development Program of China (Grant No. 2011AA030203);the National Basic Research Program of China (Grant No. 2007CB936603)
The evolutions of the pulses propagating in decreasing and increasing gain distributed fiber amplifiers with finite gain bandwidths are investigated by simulations with the nonlinear SchrSdinger equation. The results ...
This work was co-supported by the National Basic Research Program of China (973 Program) under Grant No. 2010CB327804, the National Natural Science Foundation of China under Grant No. 60807021, and the Natural Science Foundation of Zhejiang Province, China under Grant No. RI080087. The author thanks all the collaborators and students who contributed to this work.
Intensity-modulated fiber Bragg grating (FBG) sensors, compared with normal wavelength-encoding FBG sensors, can reduce the cost of sensor system significantly by using cost-efficient optical power detection devices...