Is it possible to predict theoretically the radus of the first ring (while interacting with plane wave) according to the plate diameter, charge and focal length of the lens? Just to estimate the precision of modelling

UPD: I’m afraid, you have a mistake in your program. Your pattern is wrong.

@kot_letova 

It will probably help @Michael Cheng a lot if you can tell him what mistake is in the program if you’ve found one. Perhaps, you could illustrate the issue with an example, that would be even better.

Take care,

David

Hi @kot_letova,

As David suggested, that would be helpful if you can explain more details what you are expecting and why. I would be happy to have more look. Thank you!

Best regards,

Michael

Hi ​@Michael Cheng,

    I download your vortex phase plate .dll file and used in my optical system model, however, it results in a non-symmetrical, off-axis doughnut beam patterns like follows. Since I used LD source light coupled into a SMF with APC connector (8-degree), I tried to eliminate such connector tilt angle impact on output beam patterns, so I tune the fiber end-put surface to vertical with zero angle, then I noticed the following error screenshots. I am not sure if I set anything incorrectly in the attached .ZAR file, so if you or someone can help take a look, it would be greatly appreciated,

Hi lijia2025,

I downloaded the file and update the system, but I don’t see the error message. I think this is more specific to a system, which needs more investigation. I would suggest sending this to support team so we can help to have more check.

Best regards,

Michael

Hi Michael,

   In my uploaded model, if you modify y-tangent of fiber APC 8-degree angle to zero, indicating a symmetrical incident beam case, you would find the above error message.

Hi lijia2025,

Could you submit this to support team so we can have more investigation? I’m afraid it’s probably not a good place to check complicated system issue in community. Sorry for the inconvenience.

Best regards,

Michael

Yes, I have already submitted it to the support team, the case number is 00559640.