6.4 Compare GBD against other design codes

Jashcraf / poke

Poke (pronounced poh-keh) is a Polarization Ray Tracing and Gaussian Beamlet module for Python

BSD 3-Clause "New" or "Revised" License

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6.4 Compare GBD against other design codes #29

Closed Jashcraf closed 1 year ago

Jashcraf commented 2 years ago

Simulation Parameters

Specification	Value
wavelength	1.65um
npix	256
pixelscale	3.90625um
beamlets across aperture	101
output units	irradiance

Optical System is the HST

Experiment

I'd like to use various optical modeling codes with coherent capabilities in order to determine how well the PSF is reconstructed. Ideally this simulation is done both with and without the Hubble aperture obscuration.

[x] Poke/GBD
[ ] POPPY Fresnel w/ Zemax wavefront
[x] Zemax Huygens PSF
[ ] CODE V Beam Synthesis Propagation
[ ] FRED Coherent Analysis

trentjbrendel commented 2 years ago

@Jashcraf, could you clarify the details of the beam you want me to inject into the optical system? Each of these codes handles this slightly differently and I want to make sure I'm simulating the right thing. Thanks!

Jashcraf commented 2 years ago

Sure - I'm looking for a collimated beam from infinity on-axis, so a truncated plane wave with 0 field value w.r.t. the optical axis.

If I recall, they both accept some parameters to constrain the beamlet calculation. I think FRED gives the user more control than CODE V does, so if "overlap factor" or something similar is available, set it to 1.7.

Also (and I'll add to the list above), that these should be Irradiance calculations. Intensity is also fine, just need the units to be Power instead of field. The phase doesn't matter so much here.

@trentjbrendel does that clarify it a bit better?

Jashcraf commented 2 years ago

Oh also @trentjbrendel we should synch up on the right aperture to use, so just simulate the unobscured circular entrance pupil for now.

Jashcraf commented 2 years ago

Top is GBD v.s. Analytical Airy, bottom is Zemax Huygens v.s. Analytical Airy

Jashcraf commented 2 years ago

@trentjbrendel thoughts on this figure? Need to add titles but anything else?

trentjbrendel commented 2 years ago

Those figures look great! Is this the format you want me to use for reporting my results?

Jashcraf commented 2 years ago

Nah I just need the raw data from you, frequently the centering of different diffraction methods is not the same so sometimes I need to shift things around. Also here's some titles.