New PDF release: Laser remote sensing EO

By Takashi Fujii, Tetsuo Fukuchi

ISBN-10: 0824742567

ISBN-13: 9780824742560

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The uncoordinated movement of individual Lidar: Introduction 27 atoms, molecules, clusters, or aerosol particles defines what we call temperature. The collective movement of objects in the size range from meters to hundreds of meters with frequent changes in both speed and direction is called turbulence. The collective movement of objects on a scale of tens of meters to tens of kilometers and fairly slow changes of speed and direction is called wind. From the wind a number of other phenomena are easily deduced.

This, in turn, causes defocusing and the generation of white light even from initially monochromatic laser beams by a process called selfphase modulation. , 100 mm at a distance of 1 km), TW pulses can be made to exhibit atmospheric filamentation and, thus, provide a means to deliver high laser intensities to remote locations. The possibilities of TW white-light lidar include hitherto difficult or unsuccessful ventures such as atmospheric tracemolecule, trace-ion, and trace-radical measurements, aerosol remote chemical analysis, and direct aerosol-particle sizing.

In contrast with the linear wave propagation equation, P now contains a self-induced nonlinear contribution corresponding to Kerr focusing and plasma generation: Femtosecond White-Light Lidar P ¼ PL þ PNL ¼ "0 ð1L þ 1NL ÞE 47 ð2:4Þ where xL and xNL are the linear and nonlinear susceptibilities, respectively. A radially symmetric pulse propagating along the z-axis in a reference frame moving at the group velocity vg leads to the following nonlinear Schro¨dinger equation (NLSE)39:   @" & ð2:5Þ r2?

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Laser remote sensing EO by Takashi Fujii, Tetsuo Fukuchi

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