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Simulating Ronchi Ruling

  • 10 June 2021
  • 5 replies
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Hello!


I am trying to place a Ronchi ruling style grating into my optical system in ZEMAX, but am unsure how to start! I am new to ZEMAX and any help would be greatly appreciated. 

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Best answer by Mark.Nicholson 11 June 2021, 02:36

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Userlevel 7
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Hi Sara,


You can use the diffraction grating surface (or objecty in NS mode) and simply configure it as a low-spatial frequency grating. Or, use a slide surface (object) to import a bitmap of black and white lines at the approriate point in the system.


 


- Mark

Hi Mark!


Could you help explain how you would configure the driffraction grating as a low-spatial frequency grating? I have tried to look up what that means but cannot seem to find an explaination for how to do this in ZEMAX.


Thank you for your help!

Userlevel 7
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Hi Sara


All I mean is to use the lines/um parameter of the difraction grating surface, and enter whatever frequency is appropriate. A ronchi might be 0.1 lines/micron to 0.01 lines/micron for example.


- Mark


 

Hi Mark!


Thank you, that makes sense. Do you know if this is possible to configure in sequential mode? I see the lines/um column in non-sequential mode, but cannot seem to find this in sequential mode.


Thanks again,


Sara

Userlevel 7
Badge +3

Use a Diffraction grating or any of the other diffractive surfaces and you'll see it in the parameter columns.

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