Detector: Computation mode/Settings

[capitanevs]

The detector shall allow the 3 following operations: 1) Compute the field in the nominal position (or corrected with SmallDisplacement) => Single computation. We call .ComputeField. 2) Compute the field in the best focus (not existing yet, we should call Foundation.FindFocus function) 3) Perform a scan of the field through the focus (already existing, calls Foundation.FocusSweep)

t.b.d

[aljosahafner]

I started working on this. Foundation.FindFocus call will be just a placeholder right now. Foundation.FocusSweep might be different now than it used to be.

[capitanevs]

Rename Focus Sweep Calculation => Through-Focus Scan Find Focus Calculation => Find Best Focus I would also reverse the order of the Tabs.

Add (in a fancy position, in the tab) the followin descriptions (I would try below all the commands and field etc). (1) Use this if you are interested in

• a complete plot of the spot size through the focal plane
• a collection of the intensity profiles
• below-average computational performance

(2) "Use this if you are interested in

• best focus metrics (HEW, position)
• intensity profile at the best focus
• high computational speed

Fields of (1) "Start [mm]" "Stop [mm]" "Step [mm]"

to be continued

[aljosahafner]

[aljosahafner]

• Through-Focus Scan works properly

• Find Best Focus tab must be improved: what is the result of the FocusFind function? How is it supposed to be displayed?

[capitanevs]

About "Find Best Focus Tab"

Results of FocusFind are

    Return
    --------
    Results : struct-like class
        with the following attributes

    - BestField : 1d-array (complex)
                Field at the best focus
    - BestDefocus : scalar (real)
                Defocus of the best spot
    - BestHew : scalar (real)
                Half energy width of the best spot

    - OptResult : OptimizationResult object
                Contains the results of the optimization

This is what I have figured out. Best Defocus and BestHew can be easily displayed as a string output. -One possibility is to put them in the Left panel, like that: If we do that, we can add the helper button which copies the BestDefocus value in the field "Central Point" of the next tab.

• If it is complicated to mix input/output, we can add a huge "Results" tab, with only these two lines...

We might use the formatting function.

Best Field It shall be displayed as Intensity, actually, not as field (so abs(E)**). It will have its own tab, (Field Intensit, best focus is good).

Let's put the phase as well.

Nothing more (no HEW plot).

LibWiser.Units.SmartFormatter(0.0015) +'m'`

[capitanevs]

On Through-Focus Scan

• Here the preferred fields are (Central defocus, Half-range, N of samples) rather than (Start Stop Step).
• It seems that the overall layout is good. We need to plot:

1. The Intensity at the best focus
2. The HEW
3. The Collection of all the other intensities Intensities (which you can explore with a slider).

If this is a call ResultList, HewList, SigmaList, More = lw.Foundation.FocusSweep(FocussingElement, NewDefocusList, DetectorSize = DetectorSize) you get

Plot2) From NewDefocusList, HewList and NewDefocusList, SigmaList

They are two ways of computing the spot size. A legend is needed: "HEW" and "Sigma" as labels will be good.

Plot3) From ResultList, which is like that

so IntensityList = [_.Intensity for _ in ResultList] The title of each plot should contain the corresponding defocus value (NewDefocusList[i], here) and HEW value (HewList[i] here)

Plot1)

I have just realized I do not have a function for that:-) So... let's skip Plot1 for the moment ;-)

What else

We may want to add some "textual output" as for the other box, but not now.

Comments?

[aljosahafner]

How to display Best Field from Find Best Focus? Intensity is complex, do you want to show only abs(Intensity)? Which x-axis to take?

[capitanevs]

Yes, wiser computes the fields (as they are necessary for propagation) but we always display intensity. In certain cases I already have fillee the "intensity" attribute, as in CoreOptics.ComoutationData. If there is not, just compute the intensity as: Intensity is abs(field)**2 Good question about the coordinate. I will have  a look(not ad the desk now). Try to have a look at the attribhtes of the result. If there is an "S" , it s the man.

-- Inviato da myMail per Android Venerdì, 18 Settembre 2020, 09:34AM +02:00 da aljosahafner notifications@github.com :

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