supported by the National Key Research and Development Program of China(No.2019YFA0307704);the National Natural Science Foundation of China(Nos.11974425 and 11974426);the National Safety Academic Fund(No.U1830206)。
We experimentally demonstrate third-harmonic generation(THG)in gases ionized by a femtosecond laser pulse superimposed on its second-harmonic(SH).The mechanism of THG has been investigated,and it demonstrates that a t...
supported by the National Key R&D Program of China (No.2018YFB0504400)。
The spatial distribution of the forward-propagating amplified spontaneous emission(ASE) of nitrogen molecular ions during femtosecond laser filamentation in air is studied via numerical simulations. The results sugges...
supported by the Graduate Student Innovation Foundation of National University of Defence Technology under Grant No.B120703
The dependencies of stimulated Brillouin scattering (SBS) threshold in pulsed fiber amplifiers on spectral linewidth, pulse duration, and repetition rate are measured and discussed. Experimental results show that th...
supported by the National Natural Science Foundation of China(Nos.60937003 and 61111120100)
The effects of bismuth doping content and temperature on the absorption property and near-infrared (NIR) luminescence of Bi-doped La2O3-Al2O3-SiO2 (LAS) glasses are presented. The emission intensity reaches the ma...
supported by the National Natural Science Foundation of China (No.60972003);the Program for New Century Excellent Talents in University of the Ministry of Education of China (No.NCET-08-0821);the State Key Laboratory of Advanced Optical Communication Systems and Networks,China
High-power polarization-division-multiplexing (PDM) systems or functional modules, such as self-phase-modulation (SPM)-based all-optical regenerators, cross-phase-modulation (XPM)-based wavelength convertors or ...
the National Natural Science Foundation of China (No.10574046);the National Key Project for Basic Research of China (No.2006CB806006 and 2006CB921105);the Program for Changjiang Scholars and Innovative Research Team in University (PCSIRT);the Program for New Century Excellent Talents in University (NCET-04-0420);the Doctoral Program of High Education (No.20050269011);and the Phosphor Program sponsored by Shanghai Science and Technology Committee (No.06QH14003).
Dependence of surface-enhanced Raman scattering (SERS) from Calf thymus DNA on anions is investigated. With the silver colloid, the bands at 732, 960 and 1333 cm^-1 for adenine (A), 1466 cm^-1 for deoxyribose, and...
Taking account of shot noise, thermal noise, dark current noise, and intensity noise that come from broad band light source, the dependence of the random walk coefficient of fiber optic gyroscope (FOG) on bias phase...
This work was supported by the Innovation Founda-tion of Chinese Academy of Sciences (No. 40001043)
The femtosecond laser-modified region in isot, ropic glass medium shows a big optical birefringence. Transmission of the birefringent regions between two crossed polarizers depends on phase retardation and the orienta...
This work was supported by the National Natural Science Foundation of China(No. 90204006 and 60377013)the Ministry of Education, China (No. 20030248035)the Science and Technology Committee of Shanghai Municipality (No. 036105009)
The visibility in magnetostrictive fiber-optic interferometric sensors using a Gaussian laser beam is analyzed. It is shown that the conventional Gaussian laser beam has little influence on the visibility. The visibil...
This work was supported by the Shanghai Priority Academic Discipline, the National Natural Science Foundation of China (No. 10234030 and 10374030)the National Key Project for Basic Research of China (No.1999075204)the Key Project sponsored by Shanghai Science and Technology Committee (No. 036105019and 03DJ14001)the Twilight Project sponsored by Shanghai Education Committee (No. 03SG23)
High-order harmonic generation from one-dimensional (1D) multi-atom molecular ions ill an ultra-short laser field is theoretically- investigated, The dynamics of the electron in a linearly polarized intense laser fi...