Propagation Characteristics of Infrared Pulse Wave

Authors: Yang Ruike Han Xiange Hao Yue Sun Zhongyu

Publish Date: 2007/01/24

Volume: 28, Issue: 2, Pages: 181-189

PDF Link

Abstract

The physics characteristics of the windblown sand and dust atmosphere at the sand bench of Yellow River in China are discussed The pulse distortion and time delay of infrared nanosecond pulse propagating through the atmosphere having sand and dust particles are investigated at 106 and 38 μm respectively It is shown that the delay of 10 ns laser pulse propagating through 5 km windblown sand and dust atmosphere are over 1 ns and 10 ns at 106 and 38 μm respectively The pulse spread increases slightly with wavelength increase The pulse spread of a 10 ns laser pulse is over 40 ns at 38 μm The pulse delay and spread increase rapidly with the sand particle density increasing in atmosphere The narrower the pulse width is the more the pulse distortion is Hence at infrared band for a laser pulse propagating in sand and dust atmosphere the pulse delay and spread are quite severe and need be taken into account for a narrower pulse laser system

Keywords: