Investigations of the attenuation coefficient of a narrow-bandwidth pulsed laser beam in water.
The attenuation coefficient of a pulsed laser beam in water is investigated experimentally. It is found that the attenuation coefficient is dependent on the pulse energy and the linewidth of the laser, rather than a constant. The attenuation coefficient for a narrow linewidth laser can exceed that of a broad linewidth laser due to stimulated Brillouin scattering when the laser intensity is larger than a certain value. A theoretical analysis is provided.
Bai
Jianhui
J
Applied Optics Beijing Area Major Laboratory, Department of Physics, Beijing Normal University, Beijing 100875, China.
Liu
Juan
J
Huang
Yi
Y
Liu
Yinan
Y
Sun
Lu
L
Liu
Dahe
D
Fry
E S
ES