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Optics for Engineers
book

Optics for Engineers

by Charles A. DiMarzio
August 2011
Intermediate to advanced content levelIntermediate to advanced
564 pages
20h 45m
English
CRC Press
Content preview from Optics for Engineers
282 OPTICS FOR ENGINEERS
The imaginary part, b, is called the confocal parameter and is related to the beam waist
diameter through Equation 9.21.
At any location, z, the radius of curvature is given by Equation 9.18. We note that ρ < 0
indicates a converging wave, and ρ > 0 denotes a diverging wave.
The beam diameter, d, related to b
, is given by Equation 9.19.
Finally, we note that if any two of the four parameters, d, ρ, z and d
0
are known, then
the others may be calculated.
9.2 GAUSSIAN BEAM PROPAGATION
We begin our discussion of beam propagation by looking at Equation 9.9, which gives us ρ
and b
(or d), from z and b. We can put these into ...
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Publisher Resources

ISBN: 9781439807255