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Sir, these are the best video lectures I have ever seen. Love the way you explain everything from the fundamental level in a most simplistic way.
Great courses, great talk, very pedagogic. Hut ab! from a focused electron beam induced chemist.
nice sharing. thanks
Nice video. For the intensity equation shown at 21:12, can it be shown mathematically how the interference between +-1st orders cancels out the phase shift term? Why not a cos(2*deltaPhi) term there?
Yes, it can be shown that the phase term cancels out so long as the two orders are at + and - the same angle.
24:30 DoFocus; phase error 1/4 wavelenth
At 11:50 when you talk about a 90 deg phase shift "not interfering at all" resulting in no image, you mean they interfere destructively?
Never mind I watched the rest of the video, where you explain it a little more in depth :) at 22:12 you mention destructive interference.
PDF copies of all the slides in this course are available at:www.lithoguru.com/scientist/CHE323/course.html
is it after 90 everything will be wash out ? as mimimum value will come at pi
@@pravinrawat15 For dense lines and spaces, after 90 degrees the image reverses tone, where the lines look like spaces and vice versa.
Could you make the vedio about how to figure out the DOF in two beam system? Thanks!
I haven't made a video, but this topic is covered in my book, Fundamental Principles of Optical Lithography.
Sir, these are the best video lectures I have ever seen. Love the way you explain everything from the fundamental level in a most simplistic way.
Great courses, great talk, very pedagogic. Hut ab! from a focused electron beam induced chemist.
nice sharing. thanks
Nice video. For the intensity equation shown at 21:12, can it be shown mathematically how the interference between +-1st orders cancels out the phase shift term? Why not a cos(2*deltaPhi) term there?
Yes, it can be shown that the phase term cancels out so long as the two orders are at + and - the same angle.
24:30 DoFocus; phase error 1/4 wavelenth
At 11:50 when you talk about a 90 deg phase shift "not interfering at all" resulting in no image, you mean they interfere destructively?
Never mind I watched the rest of the video, where you explain it a little more in depth :) at 22:12 you mention destructive interference.
PDF copies of all the slides in this course are available at:
www.lithoguru.com/scientist/CHE323/course.html
is it after 90 everything will be wash out ? as mimimum value will come at pi
@@pravinrawat15 For dense lines and spaces, after 90 degrees the image reverses tone, where the lines look like spaces and vice versa.
Could you make the vedio about how to figure out the DOF in two beam system? Thanks!
I haven't made a video, but this topic is covered in my book, Fundamental Principles of Optical Lithography.