supported by the Key Technology Research and Development Program of Shandong Province(No.2021CXGC010202);Chinese Academy of Sciences(No.ZDBS-LY-JSC020);the National Key Research and Development Program of China(No.2020YFB1312802);the National Natural Science Foundation of China(Nos.61935002,62205356,and 61975216).
Mode-locked lasing operations at 1064 and 910 nm wavelengths are demonstrated,respectively,in two all-fiber laser oscillators using our homemade Nd^(3+)-doped silica fiber(NDF)as the gain medium.The Al3+/Nd^(3+)co-dop...
National Science Foundation(ECCS 2048202);Office of Naval Research(N00014-19-1-2251).
The fiber single-cavity dual-comb laser(SCDCL)is an emerging light-source architecture that opens up the possibility for low-complexity dual-comb pump-probe measurements.However,the fundamental trade-off between measu...
Project supported by the Xuzhou Key Research and Development Program (Social Development) (Grant No. KC21304);the National Natural Science Foundation of China (Grant No. 61876186)。
Electroencephalogram(EEG) signals contain important information about the regulation of brain system. Thus, automatic detection of epilepsy by analyzing the characteristics obtained from EEG signals has important rese...
supported by the Natural Science Basic Research Plan in Shaanxi Province of China(No.2021JM316);National Natural Science Foundation of China(No.61905193);International Cooperative Program(No.2014DFR10780)。
We report a Yb-doped mode-locked fiber laser based on a nonlinear amplifying loop mirror[NALM],which is all-normaldispersion[ANDi],and allows the output wavelength to be tunable.The laser can generate a stable femtose...
supported by the Strategic Priority Research Program of the Chinese Academy of Sciences(No.XDB16);National Natural Science Foundation of China(Nos.11875307,11935008,11804348,11705260,11905278,and 11975302);Youth Innovation Promotion Association of the Chinese Academy of Sciences.
We report on experimental observation of non-laminar proton acceleration modulated by a strong magnetic field in laser irradiating micrometer aluminum targets.The results illustrate the coexistence of ring-like and fi...
This work was funded by the National Key R&D Program of China under Grant No.2017YFA0303800;the National Natural Science Foundation of China under Grant No.11874300;11634010;the Fundamental Research Funds for the Central Universities under Grant No.3102019JC008,3102019PY002;the Natural Science Foundation of Shaanxi Province under Grant No.2019JQ-447.
Direct generation of chirp-free solitons without external compression in normal-dispersion fiber lasers is a long-term challenge in ultrafast optics.We demonstrate near-chirp-free solitons with distinct spectral sideb...
supported by the National Natural Science Foundation of China(No.61575018)
The heavily germanium(Ge)-doped silica fiber assisted by two air holes in the cladding exhibits high nonlinearity and birefringence,low loss and normal group velocity dispersion(GVD)for two fundamental modes(FMs).When...
supported by the National Natural Science Foundation of China(11704337);National Defense Basic Research Program(JCKYS2020604SSJS011);State Key Laboratory of Acoustics,Chinese Academy of Sciences(SKLA201907);Key Laboratory of Ocean Observation-Imaging Tested of Zhejiang Province(00IT20180F05)。
This paper proposes a method to distinguish the normal modes in shallow water under near field.The method,which is based on frequency-wavenumber(F-K)transform,employs the 2D matrix comprising near field horizontal mul...