June 27, 2021 at 9:44 pmBarbara_NicollSubscriberJune 28, 2021 at 11:51 pmGuilin SunAnsys EmployeeHi, as you said, "it's like it doesn't recognize my lens", this is the problem. before you simulate the metalens, could you please plot the phase change of each unit building-block and see if their phase can have focusing functionality with quadra-shape? There are some papers detailing such simulations in the literature. Lumerical has a detailed example here : https://support.lumerical.com/hc/en-us/articles/360042097313-Metalens-Zemax-Interoperability
Please follow the suggested procedure and see if you can get something meaningful, then return it.
June 29, 2021 at 12:33 amBarbara_NicollSubscriberHi, thank you.
I followed that link and I have the unit cell simulation file (attached). The phase shift it gave me is:
in the paper this phase shift is :
and for "see if their phase can have focusing functionality with quadra-shape?" I don't know how to do it. Sorry, it is my first time working with the program, Could you explain me, please?.
I send both simulations, of the unit cell and the lens.
June 29, 2021 at 4:22 pmGuilin SunAnsys EmployeeFor a given theta, you can plot the phase change vs radius, and see how it changes. Do you arrange the unit cells according to their phase changes? do you use the correct polarization in the metalens simulation the same as the unit cell simulation? do you simulate it long enough to get accurate frequency-domain result? is the simulation terminated
I would suggest that you first duplicate the online example results so to get the design/simulating methodology, and then do your own design. If followed, at least you should see some focusing effect, even though the result is nor perfect.
Please note that Lumerical gives phase from -pi to pi, not from 0 to 2*pi.
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