3 6 &2062/ 'hvljq · 6riwzduh Æ&2062/ 3k\vlfv dvvxpswlrqv (ohfwurpdjqhwlfv vroyhu...
TRANSCRIPT
![Page 1: 3 6 &2062/ 'HVLJQ · 6riwzduh Æ&2062/ 3k\vlfv dvvxpswlrqv (ohfwurpdjqhwlfv vroyhu ilqlwh hohphqw phwkrg )(0 6lpxodwlrq grpdlq 0hvk %rxqgdu\ frqglwlrqv 6rxufh sursdjdwlrq ru erxqgdu\](https://reader033.vdocuments.mx/reader033/viewer/2022060908/60a2a3a7bed3506f747243da/html5/thumbnails/1.jpg)
||Institute of Electromagnetic Fields (IEF)Yannik Horst – [email protected]
Shadi Nashashibi – [email protected] Schwanninger – [email protected]
05.10.2020 1
P&S COMSOL® Design:Simulations of Optical ComponentsLecture 3: Introduction to COMSOL & Young’s Slit Experiments
Arif Güngör, Yannik Horst, Stefano Valente
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||Institute of Electromagnetic Fields (IEF)Yannik Horst – [email protected]
Shadi Nashashibi – [email protected] Schwanninger – [email protected]
05.10.2020 2
Simulation of physics – what’s needed
Set up environment
Young’s slit experiments
Single slit Theory
Simulation
Double slit Theory
Simulation
Content
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||Institute of Electromagnetic Fields (IEF)Yannik Horst – [email protected]
Shadi Nashashibi – [email protected] Schwanninger – [email protected]
05.10.2020 3
Software COMSOL
Physics / assumptions
Electromagnetics solver, finite element method (FEM)
Simulation domain
Mesh
Boundary conditions
Source (propagation) or boundary analysis (mode-analysis)
Simulation of Physics – What’s Needed
![Page 4: 3 6 &2062/ 'HVLJQ · 6riwzduh Æ&2062/ 3k\vlfv dvvxpswlrqv (ohfwurpdjqhwlfv vroyhu ilqlwh hohphqw phwkrg )(0 6lpxodwlrq grpdlq 0hvk %rxqgdu\ frqglwlrqv 6rxufh sursdjdwlrq ru erxqgdu\](https://reader033.vdocuments.mx/reader033/viewer/2022060908/60a2a3a7bed3506f747243da/html5/thumbnails/4.jpg)
||Institute of Electromagnetic Fields (IEF)Yannik Horst – [email protected]
Shadi Nashashibi – [email protected] Schwanninger – [email protected]
05.10.2020 4
Mesh
Boundary conditions
Source (propagation) or boundary analysis (mode-analysis)
Simulation of Physics – What’s Needed
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||Institute of Electromagnetic Fields (IEF)Yannik Horst – [email protected]
Shadi Nashashibi – [email protected] Schwanninger – [email protected]
05.10.2020 5
Discretization of simulation domain
Mesh size determines accuracy of solution
Too large mesh wrong results
Accuracy vs. simulation time
Too small mesh very large simulation time
Mesh
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||Institute of Electromagnetic Fields (IEF)Yannik Horst – [email protected]
Shadi Nashashibi – [email protected] Schwanninger – [email protected]
05.10.2020 6
Boundary conditions (BC) allow to truncate the simulation domain
Behavior must be defined
Some of the most commonly used BCs are:
Perfect electric conductor (PEC)
Perfect magnetic conductor (PMC)
Scattering boundary condition
Periodic boundaries condition (PBC)
Boundary Conditions
Different BCs
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||Institute of Electromagnetic Fields (IEF)Yannik Horst – [email protected]
Shadi Nashashibi – [email protected] Schwanninger – [email protected]
05.10.2020 7
Provide “energy” to the simulation domain
Common source types:
Point sources (electric / magnetic)
Voltage sources
Current sources
Field sources
Plane wave port
Sources
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||Institute of Electromagnetic Fields (IEF)Yannik Horst – [email protected]
Shadi Nashashibi – [email protected] Schwanninger – [email protected]
05.10.2020 8
Set up environment
Content
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||Institute of Electromagnetic Fields (IEF)Yannik Horst – [email protected]
Shadi Nashashibi – [email protected] Schwanninger – [email protected]
05.10.2020 9
In the shell, type command:
This command should work now, if at any point it fails, contact us.
If you use the command “comsol” without “-ckl”, that’s also fine. Just make sure In “options/preferences/geometry” Geometry representation for the new models is chosen as Comsol kernel, not CAD kernel.
After changing the setting, restart Comsol for new setting to become active.
Set up Environment
comsol -ckl
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||Institute of Electromagnetic Fields (IEF)Yannik Horst – [email protected]
Shadi Nashashibi – [email protected] Schwanninger – [email protected]
05.10.2020 10
Set up Environment
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||Institute of Electromagnetic Fields (IEF)Yannik Horst – [email protected]
Shadi Nashashibi – [email protected] Schwanninger – [email protected]
05.10.2020 11
Set up Environment
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||Institute of Electromagnetic Fields (IEF)Yannik Horst – [email protected]
Shadi Nashashibi – [email protected] Schwanninger – [email protected]
05.10.2020 12
Set up Environment – Parameters
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||Institute of Electromagnetic Fields (IEF)Yannik Horst – [email protected]
Shadi Nashashibi – [email protected] Schwanninger – [email protected]
05.10.2020 13
Set up Environment – Geometry
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||Institute of Electromagnetic Fields (IEF)Yannik Horst – [email protected]
Shadi Nashashibi – [email protected] Schwanninger – [email protected]
05.10.2020 14
Young’s slit experiments
Single slit Theory
Simulation
Double slit Theory
Simulation
Content
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||Institute of Electromagnetic Fields (IEF)Yannik Horst – [email protected]
Shadi Nashashibi – [email protected] Schwanninger – [email protected]
05.10.2020 15
Young’s Slit Experiment: Single Slit – Theory
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||Institute of Electromagnetic Fields (IEF)Yannik Horst – [email protected]
Shadi Nashashibi – [email protected] Schwanninger – [email protected]
05.10.2020 16
Young’s Slit Experiment: Single Slit – Geometry
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||Institute of Electromagnetic Fields (IEF)Yannik Horst – [email protected]
Shadi Nashashibi – [email protected] Schwanninger – [email protected]
05.10.2020 17
Young’s Slit Experiment: Single Slit – Mesh
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||Institute of Electromagnetic Fields (IEF)Yannik Horst – [email protected]
Shadi Nashashibi – [email protected] Schwanninger – [email protected]
05.10.2020 18
Young’s Slit Experiment: Single Slit – Results
z-component of E-field
![Page 19: 3 6 &2062/ 'HVLJQ · 6riwzduh Æ&2062/ 3k\vlfv dvvxpswlrqv (ohfwurpdjqhwlfv vroyhu ilqlwh hohphqw phwkrg )(0 6lpxodwlrq grpdlq 0hvk %rxqgdu\ frqglwlrqv 6rxufh sursdjdwlrq ru erxqgdu\](https://reader033.vdocuments.mx/reader033/viewer/2022060908/60a2a3a7bed3506f747243da/html5/thumbnails/19.jpg)
||Institute of Electromagnetic Fields (IEF)Yannik Horst – [email protected]
Shadi Nashashibi – [email protected] Schwanninger – [email protected]
05.10.2020 19
Young’s Slit Experiment: Single Slit – Results
Intensity
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||Institute of Electromagnetic Fields (IEF)Yannik Horst – [email protected]
Shadi Nashashibi – [email protected] Schwanninger – [email protected]
05.10.2020 20
Young’s Slit Experiment: Single Slit – Parametric Sweep
![Page 21: 3 6 &2062/ 'HVLJQ · 6riwzduh Æ&2062/ 3k\vlfv dvvxpswlrqv (ohfwurpdjqhwlfv vroyhu ilqlwh hohphqw phwkrg )(0 6lpxodwlrq grpdlq 0hvk %rxqgdu\ frqglwlrqv 6rxufh sursdjdwlrq ru erxqgdu\](https://reader033.vdocuments.mx/reader033/viewer/2022060908/60a2a3a7bed3506f747243da/html5/thumbnails/21.jpg)
||Institute of Electromagnetic Fields (IEF)Yannik Horst – [email protected]
Shadi Nashashibi – [email protected] Schwanninger – [email protected]
05.10.2020 21
Young’s Slit Experiment: Single Slit – Parametric Sweep Results
Sweep slit_width slit_width[3]
slit_width[2]
slit_width[1]
slit_width[0]
z-component of E-field
![Page 22: 3 6 &2062/ 'HVLJQ · 6riwzduh Æ&2062/ 3k\vlfv dvvxpswlrqv (ohfwurpdjqhwlfv vroyhu ilqlwh hohphqw phwkrg )(0 6lpxodwlrq grpdlq 0hvk %rxqgdu\ frqglwlrqv 6rxufh sursdjdwlrq ru erxqgdu\](https://reader033.vdocuments.mx/reader033/viewer/2022060908/60a2a3a7bed3506f747243da/html5/thumbnails/22.jpg)
||Institute of Electromagnetic Fields (IEF)Yannik Horst – [email protected]
Shadi Nashashibi – [email protected] Schwanninger – [email protected]
05.10.2020 22
Young’s Slit Experiment: Single Slit – Parametric Sweep Results
Sweep slit_width
slit_width[3]
slit_width[2]
slit_width[1]
slit_width[0]
Intensity
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||Institute of Electromagnetic Fields (IEF)Yannik Horst – [email protected]
Shadi Nashashibi – [email protected] Schwanninger – [email protected]
05.10.2020 23
Young’s Slit Experiment: Double Slit – Theory
Interesting parameters to change• Frequency• Slit width• Distance from slit to screen
Amplitude of Field
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||Institute of Electromagnetic Fields (IEF)Yannik Horst – [email protected]
Shadi Nashashibi – [email protected] Schwanninger – [email protected]
05.10.2020 24
Young’s Slit Experiment: Double Slit – Theory
Interesting parameters to change• Frequency• Slit width• Distance from slit to screen
Intensity of Field
![Page 25: 3 6 &2062/ 'HVLJQ · 6riwzduh Æ&2062/ 3k\vlfv dvvxpswlrqv (ohfwurpdjqhwlfv vroyhu ilqlwh hohphqw phwkrg )(0 6lpxodwlrq grpdlq 0hvk %rxqgdu\ frqglwlrqv 6rxufh sursdjdwlrq ru erxqgdu\](https://reader033.vdocuments.mx/reader033/viewer/2022060908/60a2a3a7bed3506f747243da/html5/thumbnails/25.jpg)
||Institute of Electromagnetic Fields (IEF)Yannik Horst – [email protected]
Shadi Nashashibi – [email protected] Schwanninger – [email protected]
05.10.2020 25
Young’s Slit Experiment: Double Slit – Geometry
Point source
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||Institute of Electromagnetic Fields (IEF)Yannik Horst – [email protected]
Shadi Nashashibi – [email protected] Schwanninger – [email protected]
05.10.2020 26
Young’s Slit Experiment: Double Slit – Mesh
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||Institute of Electromagnetic Fields (IEF)Yannik Horst – [email protected]
Shadi Nashashibi – [email protected] Schwanninger – [email protected]
05.10.2020 27
Young’s Slit Experiment: Double Slit – Results
z-component of the E-field
![Page 28: 3 6 &2062/ 'HVLJQ · 6riwzduh Æ&2062/ 3k\vlfv dvvxpswlrqv (ohfwurpdjqhwlfv vroyhu ilqlwh hohphqw phwkrg )(0 6lpxodwlrq grpdlq 0hvk %rxqgdu\ frqglwlrqv 6rxufh sursdjdwlrq ru erxqgdu\](https://reader033.vdocuments.mx/reader033/viewer/2022060908/60a2a3a7bed3506f747243da/html5/thumbnails/28.jpg)
||Institute of Electromagnetic Fields (IEF)Yannik Horst – [email protected]
Shadi Nashashibi – [email protected] Schwanninger – [email protected]
05.10.2020 28
Young’s Slit Experiment: Double Slit – Results
Intensity
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||Institute of Electromagnetic Fields (IEF)Yannik Horst – [email protected]
Shadi Nashashibi – [email protected] Schwanninger – [email protected]
05.10.2020 29
Young’s Slit Experiment: Double Slit – Parametric Sweep
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||Institute of Electromagnetic Fields (IEF)Yannik Horst – [email protected]
Shadi Nashashibi – [email protected] Schwanninger – [email protected]
05.10.2020 30
Sweep sep
Young’s Slit Experiment: Double Slit – Parametric Sweep
sep
JK30
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Slide 30
JK30 is this plot an intensity plot?Jentner Kaja; 04.10.2019
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||Institute of Electromagnetic Fields (IEF)Yannik Horst – [email protected]
Shadi Nashashibi – [email protected] Schwanninger – [email protected]
05.10.2020 31
Wave-guiding
Mode analysis
Next Week
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||Institute of Electromagnetic Fields (IEF)Yannik Horst – [email protected]
Shadi Nashashibi – [email protected] Schwanninger – [email protected]
05.10.2020 32