REFLECTION OF A NONSTATIONARY BEAM OF LIGHT FROM AN ABSORBING MEDIUM IN THE CASE OF GRAZING-INCIDENCE

被引：4
|
作者：
PONTECORVO, GB
REMIZOVICH, VS
TISHIN, IV
机构：
[1] MOSCOW INT PHYS INST,MOSCOW,RUSSIA
[2] MOSCOW PHYS ENGN INST,MOSCOW,RUSSIA
来源：
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA A-OPTICS IMAGE SCIENCE AND VISION | 1995年 / 12卷 / 08期
关键词：
D O I：
10.1364/JOSAA.12.001730
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Temporal characteristics of the reflected radiation intensity in the case of a nonstationary light beam incident at grazing angles upon a semi-infinite medium with large-scale scattering centers are investigated. The problem of small-angle Light reflection is solved within the Fokker-Planck approximation. An analytical expression for the reflected radiation intensity is obtained. Temporal characteristics of the reflected radiation are investigated in detail for the most important cases of incident beam modulation: delta pulse, a sequence of rectangular pulses of different duty factors, and a harmonically modulated light signal. The transition mode for different grazing angles and parameters of the scattering medium has been investigated explicitly. Thus, for example, the characteristic transition time to the stationary mode is calculated for irradiation of the medium with a steplike light pulse.
引用
收藏
页码：1730 / 1739
页数：10
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