Dear Steven and Meep Users, I got a question regarding how to setup 2D Gaussian beam in Meep. I want to simulate the structure of coupling the light from the single mode polarized fiber onto the resonator cavity through the grating structure. I want to see how the light distributed inside the cavity. I skipped the grating structure, and assumed the source is a Gaussian beam on the 2D plane. Then put this 2D Gaussian beam into the square cavity enclosed by photonic crystal structure. I already specified the geometry. But I still don't know how to setup this 2D Gaussian source. The examples I search in the archive are all of specifying a Gaussian line source. Do I need to consider any phase difference of the light in each point? If not, I believe I can write a 2D Gaussian amp-fun as function of "x" and "y". Any example will be greatly appreciated. Thank you! Best,
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