if I am interested in designing a metalens in the UV region (270nm -380nm).
So first, if you design a metalens at λd=290nm. can you set in the plane source the start wavelength=stop wavelength=270 nm. to obtain the normalized intensity distribution of the designed UV metalens at incident UV light at 270nm. please note the attached photo.
could I ask how I can get the Diameter (D), and focal lens of that metalens design?