This is an interesting tutorial! Very informative for the beginner to understand the logistics!!! Thanks!!! Please would you upload more with COMSOL too?
first of all, a big thanks, watching this video i'm confident enough to start my PhD research on metasurfaces. If you wanna collaborate, please reply back to me, looking forward to hearing from you. thanks
Hi Ragu, Thanks for the video tutorial and the Metaoptics software, I am trying to upload my own data to create GDS file but it cannot done. I used xlsx file format with only two row but it doesn't work. Can you please help me with that?
Great tutorial ! Is there any tool that can be used for creating a polar array for a linear array of circles for me to eventually create a circular symmetric metalens surface?
@@RaghuDharmavarapuiitm Thanks Raghu for the feedback. I have an excel file containing the positions and radii for an linear array of circles (mostly on positive side of x-axis). i now want to polar array each one of these circles (got the angular increments for each original circle in the same excel file) to create the full metalens gds2 file. i know your software starts with the phase profile. any other tool that you can think of in this situation? Thanks.
Hello! Thank you very much for helpful explanation! I have a question: can this software provide a polarization metagrating design (I mean, a diffraction grating whose orders behave as polarizers, for example, as mentioned in paper "Matrix Fourier optics enables a compact full-Stokes polarization camera"). And if it is, how should I set the Phase Design to implement that? Thank you very much and have a nice day!
Hi. PML layer comes by default in the Lumerical software, you just have to choose it. PML means a perfectly matched layer, ideally, it should absorb all the energy that hits it and should not reflect any energy back into the simulation region.
Thank you for the video. Could you tell how to discretise phase profile (can it be done in matlab). And then how to know the location where we should place our scatterer.
Hi. You can create your phase mask as a grayscale image with 4/8/16 phase levels(equivalent to the corresponding number of gray levels). For example, 4 grayscale levels correspond to 0, 90, 180, 270 transmission phases etc... You can upload this image in MetaOptics and choose the choice of wavelength and create the GDS layout.
@@RaghuDharmavarapuiitm using metaoptics I have created GDS layout. I want to do simulation of light propagation from metalens. Can I use GDS layout as my geometry in software like COMSOL.
Hello sir.. its metasurface kan generate a vortex beam?? And how creating them to join together..sir may i know details about how you creating metasurface and your jurnal as reference?
Very informative......I would suggest this video for any one interested in optical metametarials
great explanation to the metalens, it was so much insightful.
Thank you for, simply explaining metalens and metasurface
I am so grateful for your efforts on this video
A very nice video for the beginner! Thanks a lot!
This is an underestimated tutorial! Very informative for the beginner to understand the logistics!!! Thanks!!! Please upload more with COMSOL too
Thank you,sir!
I have to say this vedio helps alot! thank you very much!
Thank you so much for the nice tutorial
Thank you very much
Very useful video...Thank you
Thank you for, simply explain metalens and metasurface!
thank you for your shareing
This is an interesting tutorial! Very informative for the beginner to understand the logistics!!! Thanks!!! Please would you upload more with COMSOL too?
Very good explain. thank for youe!
Gud,we r very proud of u little Einstein
Thank you Raghu.
Wonderful explanation. Thank you..
Excellent presentation
Very nice tutorial, thank you.
very useful
very useful, thank you so much
what should be the thickness of the ground plane? what parameters does it depend on?
first of all, a big thanks, watching this video i'm confident enough to start my PhD research on metasurfaces. If you wanna collaborate, please reply back to me, looking forward to hearing from you. thanks
Hi guys !
Great video! Thanks
It was amazing
thank you
Hi Ragu, Thanks for the video tutorial and the Metaoptics software, I am trying to upload my own data to create GDS file but it cannot done. I used xlsx file format with only two row but it doesn't work. Can you please help me with that?
the software doesn't open, shows "failed to execute script metaoptics'
Huygens principle from high school lol. We didn't do the same high school then !!
Hello! This really helped a lot. I would like to know how do we get the phase. As you mentioned, the phase changes with radius.
Thanks for nice video .Is the Software Link for the software working ?
nice explanation
Hi thanks for the great video. Can I ask what periodic length should be chosen for the simulation? 19:00
sir, can u please explain as a video , how can we obtain the phase v/s radius graph? I am not able to obtain the graph.
By any application can we openning the saved file"Lens" as you name save??
Great tutorial ! Is there any tool that can be used for creating a polar array for a linear array of circles for me to eventually create a circular symmetric metalens surface?
You can download the MetaOptics source code from gitHub and try to to add the functionality that you are looking for.
@@RaghuDharmavarapuiitm Thanks Raghu for the feedback. I have an excel file containing the positions and radii for an linear array of circles (mostly on positive side of x-axis). i now want to polar array each one of these circles (got the angular increments for each original circle in the same excel file) to create the full metalens gds2 file. i know your software starts with the phase profile. any other tool that you can think of in this situation? Thanks.
@@nimaljayasiri6065 Sorry. Haven't used such software. You might have to write your own script. May I know if it's for education or industrial use?
@@RaghuDharmavarapuiitm Yes, i understand. Someone designed the metalens and i have to produce the gds2 file. Am with an academic institute
Hello! Thank you very much for helpful explanation! I have a question: can this software provide a polarization metagrating design (I mean, a diffraction grating whose orders
behave as polarizers, for example, as mentioned in paper "Matrix Fourier optics enables a compact full-Stokes polarization camera"). And if it is, how should I set the Phase Design to implement that? Thank you very much and have a nice day!
Possible I think if you use vector diffraction theory to design the phase profiles.
Hello sir,
Can please tell me what should be the value refractive index of top and bottom PML layer
Hi. PML layer comes by default in the Lumerical software, you just have to choose it. PML means a perfectly matched layer, ideally, it should absorb all the energy that hits it and should not reflect any energy back into the simulation region.
Thank you for the video. Could you tell how to discretise phase profile (can it be done in matlab). And then how to know the location where we should place our scatterer.
Hi. You can create your phase mask as a grayscale image with 4/8/16 phase levels(equivalent to the corresponding number of gray levels). For example, 4 grayscale levels correspond to 0, 90, 180, 270 transmission phases etc... You can upload this image in MetaOptics and choose the choice of wavelength and create the GDS layout.
@@RaghuDharmavarapuiitm using metaoptics I have created GDS layout. I want to do simulation of light propagation from metalens. Can I use GDS layout as my geometry in software like COMSOL.
@@manishkala6292 Yes. I think you can do it. In Comsol, you need to specify the refractive index, height etc.
Ok thank you
Excellent video sir..is is possible to implement same concept for RF/MW??
if possible how to create GDA layer??
Fins would be huge and lens would be huge.
hey buddy, i am working on metasurface for RF, can we collaborate?
Hello sir.. its metasurface kan generate a vortex beam?? And how creating them to join together..sir may i know details about how you creating metasurface and your jurnal as reference?
Hi. Yes they can generate vortex beams. Please find my papers here scholar.google.com/citations?user=D8KpPAwAAAAJ&hl=en
@@RaghuDharmavarapuiitm hello tq sir.. sir can i get your email sir??
Can i get the PPT used?
Could you suggets some good papers for metalens design on microwave region ??
You can find some good references in my Thesis. You can download it from here sites.google.com/ee.iitm.ac.in/rdharmavarapu/education-research
hello sir, by using metaoptics software its can generate vortex beam using metasurface??
Yes. It can.
@@RaghuDharmavarapuiitm sir what is import phase in your software? i cannot run.. please help me how to import.
anyone here who's designing metasurfaces for RCS reduction, please reply back for collaboration, thanks