Zobrazeno 1 - 10
of 58
pro vyhledávání: '"Wang Zu-Geng"'
Publikováno v:
Chinese Physics Letters. 25:3260-3263
We theoretically demonstrate the achievement of narrow-band coherent anti-Stokes Raman scattering (CARS) signal by manipulating broad-band probe spectrum. The narrowing of the CARS signal depends on the spectrum bandwidth of the probe beam, and thus
Publikováno v:
Chinese Physics B. 17:2914-2918
A femtosecond laser pulse can be tailored to control the two-photon transitions using the ultra-fast pulse-shaping technique. This paper theoretically and experimentally demonstrates that two-photon transitions in molecular system with broad absorpti
Publikováno v:
Chinese Physics Letters. 25:2062-2065
Selective excitation of coherent anti-Stokes Raman scattering from the benzene solution is achieved by adaptive pulse shaping based on genetic algorithm, and second harmonic generation frequency-resolved optical gating (SHG-FROG) technique is adopted
Publikováno v:
Chinese Physics Letters. 25:2066-2069
We theoretically investigate the coherent enhancement of resonant two-photon transitions (TPT) in a three-level atomic system. The TPT can be coherently enhanced by modulating spectral amplitude due to eliminating the destructive interference, though
Autor:
Chen Guo-liang, Sun Zhen-Rong, Zhang Shi-An, Li Xia, Wang Zu-Geng, Zhang Xiang-Yun, Zhang Hui
Publikováno v:
Chinese Physics Letters. 25:528-531
High resolution mode-selective excitation in the mixture of C6H6 (992cm−1) and C6D6 (945 cm−1) is experimentally achieved by adaptive femtosecond pulse shaping based on the genetic algorithm (GA), and second harmonic generation frequency-resolved
Autor:
Zhang Xiang-Yun, Sun Zhen-Rong, Zhang Shi-An, Xu Yu, XU Zhi-Zhan, Chen Guo-liang, Zhang Liang, Wang Zu-Geng, Li Ru-Xin
Publikováno v:
Chinese Physics Letters. 22:2557-2560
An optimal feedback control of two-photon fluorescence in the ethanol solution of 4-dicyanomethylene-2-methyl-6-p-dimethyl-amiiiostryryl-4H-pyran (DCM) using pulse-shaping technique based on genetic algorithm is demonstrated experimentally. The two-p
Optimization of High-Order Harmonic by Genetic Algorithm for the Chirp and Phase of Few-Cycle Pulses
Autor:
Sun Zhen-Rong, Zhang Xiang-Yun, Li Ru-Xin, Wang Yu-feng, Zhang Wei-ping, XU Zhi-Zhan, Xiao Jun, Chen Guo-liang, Deng Li, Wang Zu-Geng
Publikováno v:
Chinese Physics Letters. 22:873-876
The brightness of a particular harmonic order is optimized for the chirp and initial phase of the laser pulse by genetic algorithm. The influences of the chirp and initial phase of the excitation pulse on the harmonic spectra are discussed in terms o
Publikováno v:
Chinese Physics Letters. 21:1930-1933
Population transfer in a three-level Λ system is simulated numerically and optimized. Almost complete population transfer from |1 to |3 is achieved by a genetic algorithm while the population in state |2 reached minimum over the entire evolution at
Autor:
Lin Jian, Wang Zu-Geng, Wang Yu-Fei, Xu Zhi-Zhan, Zeng He-Ping, Zhang Shi-An, Li Ru-Xin, Sun Zhen-Rong, Huang Wen-hai
Publikováno v:
Chinese Physics. 13:1287-1290
Nonlinear optical properties of 75TeO2–20Nb2O5–5ZnO glasses doped with CeO2 have been investigated with a self-diffracted time-resolved degenerate four-wave mixing (DFWM) technique at different excitation intensities and lattice temperatures. The
Publikováno v:
Chinese Physics. 11:346-351
We have studied theoretically constructive interference via collision-aided radiative excitation in an open four-level system using a density matrix approach. The four-level system consists of a Λ-type three-level quantum-beat configuration driven b