Photoionization of polarized doublet states of Xenon atom

Abstract We studied experimentally and theoretically the ionization of a two-photon excited superposition of 4f states of Xe atom by probe femtosecond pulse laser in a supersonic beam. The revealed oscillation structure in the observed photoionization signals is associated with the interference of the coherently populated components of Xe doublet states. Our results demonstrate the high efficiency of proposed experimental scheme for registering quantum beats in the photoelectron current.

Download Full-text

Study of harmonic generation from InSb excited by terahertz wave pulses with femtosecond pulse laser excitation

2020 45th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz) ◽

10.1109/irmmw-thz46771.2020.9370493 ◽

2020 ◽

Author(s):

M. Nakajima ◽

S. Ueda ◽

K. Kato ◽

T.N.K. Phan ◽

T. Shimizu ◽

...

Keyword(s):

Pulse Laser ◽

Harmonic Generation ◽

Femtosecond Pulse ◽

Laser Excitation ◽

Terahertz Wave ◽

Femtosecond Pulse Laser ◽

Pulse Laser Excitation

Download Full-text

The effect of spherical aberration on temperature distribution inside glass by irradiation of a high repetition rate femtosecond pulse laser

Chinese Physics B ◽

10.1088/1674-1056/21/2/025201 ◽

2012 ◽

Vol 21 (2) ◽

pp. 025201 ◽

Cited By ~ 4

Author(s):

Ye Dai ◽

Guang-Jun Yu ◽

Guo-Rui Wu ◽

Hong-Liang Ma ◽

Xiao-Na Yan ◽

...

Keyword(s):

Temperature Distribution ◽

Pulse Laser ◽

Repetition Rate ◽

Femtosecond Pulse ◽

Spherical Aberration ◽

High Repetition Rate ◽

Femtosecond Pulse Laser ◽

High Repetition

Download Full-text

Characteristics Research of Gallium Arsenide Solar Cells under Femtosecond Laser Illumination

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.941-944.575 ◽

2014 ◽

Vol 941-944 ◽

pp. 575-579

Author(s):

Si Xiao ◽

Yi Tan Gao ◽

Xiu Qin Tian ◽

Jun He

Keyword(s):

Gallium Arsenide ◽

Solar Cells ◽

Femtosecond Laser ◽

Pulse Laser ◽

Conversion Efficiency ◽

Femtosecond Pulse ◽

Damage Threshold ◽

Laser Illumination ◽

Femtosecond Pulse Laser ◽

Continuous Waves

Femtosecond laser with ultrashort pulse (≤35fs) is used to investigate the damage threshold and light-to-electric conversion efficiency of gallium arsenide solar cells. Different from nanosecond or picosecond lasers, the damage threshold of the solar cell illuminated by femtosecond laser is slightly higher than that under the illumination of continuous-waves laser with the same wavelength. Because the thermal non-equilibrium effect becomes obvious, heat conduction phenomenon no longer obeys the law of Fourier, when the heating pulse time of femtosecond laser is equal to or shorter than the electron-phonon coupling time. The photovoltaic properties of gallium arsenide solar cells under femtosecond pulse laser illumination are measured. The device shows better short circuit current and the light-to-electric conversion efficiency under femtosecond pulse laser than that under continuous-waves laser of the same wavelength.

Download Full-text