by Din » Fri Jun 18, 2021 2:35 pm
Dammit! Thought of this about 10 years ago. Yes, I know the joke:
How many holographers does it take to change a light bulb? 10, one to change the bulb and 9 to say, "I thought of that 10 years ago!"
About 1987, Tomasz Jannsen (owner POC) and I were talking about using the WKB approximation to model volume holograms, since I believed Kogelnik wasn't designed for the new photopolymers coming out then. Anyway, some 25 years later, ~2012, I was working on holographic diffractive waveguides for the research division of a hi-tech company that shall remain nameless; the method by which some VR/AR/MR goggles, which seemed to be an up-and-coming technology in 2012, work by diffractive waveguides. One of the problems was not being able to quantify and characterise these waveguides in photopolymers. Recalling that long-ago discussion on WKB methods with Tomasz, I wondered if it was possible to use digital holography along with a WKB approximation. Not having the tools for digital holography, I sketched out some notes and let the whole idea go. Now, here it is in JOSA B - Optical Physics!
- waveguides.jpg (825.12 KiB) Viewed 13139 times
Dammit! Thought of this about 10 years ago. Yes, I know the joke:
How many holographers does it take to change a light bulb? 10, one to change the bulb and 9 to say, "I thought of that 10 years ago!"
About 1987, Tomasz Jannsen (owner POC) and I were talking about using the WKB approximation to model volume holograms, since I believed Kogelnik wasn't designed for the new photopolymers coming out then. Anyway, some 25 years later, ~2012, I was working on holographic diffractive waveguides for the research division of a hi-tech company that shall remain nameless; the method by which some VR/AR/MR goggles, which seemed to be an up-and-coming technology in 2012, work by diffractive waveguides. One of the problems was not being able to quantify and characterise these waveguides in photopolymers. Recalling that long-ago discussion on WKB methods with Tomasz, I wondered if it was possible to use digital holography along with a WKB approximation. Not having the tools for digital holography, I sketched out some notes and let the whole idea go. Now, here it is in JOSA B - Optical Physics!
[attachment=0]waveguides.jpg[/attachment]