Q for ray tracers: diffraction correction?

From: Phil Hobbs <pcdhSpamMeSenseless@xxxxxxxxxxxxxxxxxx>
Date: Tue, 03 Jul 2007 09:13:27 -0400

Gents,

I'm rewriting my section on ABCD matrices, and will probably put in Prof S's complex-valued ABCD formalism that takes focal shifts due to diffraction into account.

The focal shift can be pretty big at low Fresenel numbers, and that becomes important e.g. in building miniature interferometers with very narrow beams.

Do optical design programs include corrections for this focal shift due to diffraction?

Cheers,

Phil Hobbs

BTW I'll be more or less incommunicado for 2 weeks starting tomorrow--sitting on an island in Indian Lake, at the north end of the island in the centre of this picture: http://maps.google.com/maps?f=q&hl=en&geocode=&q=indian+lake+ny&ie=UTF8&ll=43.687674,-74.319763&spn=0.037674,0.049953&t=k&z=14&om=1

Read it and weep. ;)
.

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Re: Q for ray tracers: diffraction correction?
... S's complex-valued ABCD formalism that takes focal shifts due to ... diffraction into account. ... Do optical design programs include corrections for this focal shift due to ... tomorrow--sitting on an island in Indian Lake, at the north end of the ...
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Re: Q for ray tracers: diffraction correction?
... S's complex-valued ABCD formalism that takes focal shifts due to ... diffraction into account. ... Do optical design programs include corrections for this focal shift due to ... tomorrow--sitting on an island in Indian Lake, at the north end of the ...
(sci.optics)