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0 votes
2 answers
103 views

Explanation: When light waves propagate through and around objects whose dimensions are much greater than the wavelength of the light,

My textbook, Fundamentals of Photonics, 3rd edition, by Teich and Saleh, says the following: When light waves propagate through and around objects whose dimensions are much greater than the ...
The Pointer's user avatar
1 vote
1 answer
258 views

Variation of Refractive index

We know that refractive index, for any medium, $$n=1/\sqrt{\epsilon\mu}.$$ Also, according to Cauchy's relation $$n=A+B/\lambda^2,$$ where $A$ and $B$ are constants related to the medium. ...
user226375's user avatar
1 vote
2 answers
3k views

Is optical path length (OPL) usually in units of length, or wavelength?

When I do calculations, I usually define optical path length (OPL) of a path as the integral of index $n$ along a path divided by the vacuum wavelength, so that I can get the phase easily. So for a ...
uhoh's user avatar
  • 6,273
3 votes
0 answers
111 views

Optics: finding total power of a system, including wavelength

Specifically I need to create an ABCD matrix given 2 radii of curvatures, the thickness of the lens, type of glass (BK7) and a given wavelength. I will have to figure this out eventually, so help ...
user964069's user avatar