Renju Peng

6 Questions 6 Answers 0 Followers

Questions related from Renju Peng

Are there any applications of Alumina ceramic tube on photolithography?

Hi colleagues, I wonder whether there are some specific applications of Alumina ceramic tube on lithography, especially on the projection objective. If so, please provide some data or...

07 April 2023 2,101 2 View

How to calculate Zernik index?

Hi everyone, I have encountered a trouble about Zernik index when studing Zernik polynomials. This problem is equivalent mathematically as follows, Assume n=0,1,2,... With each given n, let...

28 October 2021 4,006 3 View

Besides ellipsometer, is there any other optical method valid for distinguish the geometric information of a dense periodic array?

Hi everyone, We need to detect the nanoscaled geometric defects of a dense cylinder array using optical methods. However, the period of the array is so small that only 0th diffractive light exist...

18 August 2021 7,167 5 View

How to compare image data of simulation and experiment?

Hi colleagues, We need to analyze optical images from simulation and experiment. However, since the simulation data are in form of optical intensity and the experiment data are in form of gray...

27 October 2020 8,049 3 View

How to begin with a optical cage system?

Dear colleagues, We want to establish a reflective microscopy system with Kohler illumination using optical cage system. But we have no idea how to begin with. Could you please propose any...

27 August 2020 692 2 View

How to simulate the electromagnetic field near the Fourier plane of an objective with FDTD Solutions?

Hi there, I am wondering how to simulate EM field near the Fourier plane of an objective with FDTD Solutions (Lumerical). As it is shown in the figure of the attached file, I have already...

25 March 2019 7,627 3 View