November 7, 2022 at 10:54 am
November 10, 2022 at 1:53 amGuilin SunAnsys Employee
Yes, you are right that NA means numerical aperture of the objective lens used to produce such a beam.
Please refer this article: https://optics.ansys.com/hc/en-us/articles/360034382854-Sources-Plane-wave-and-Beam
The distance from foucs is the ditance of the injection plane to the focus plane.
Please write post in the dedicated Photonics forum:
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