Search found 440 matches
- Sun Jan 09, 2022 10:05 am
- Forum: General Holography
- Topic: Dielectric mirror mystery
- Replies: 6
- Views: 8414
Re: Dielectric mirror mystery
I'd suspect the attenuator slipped, letting a bit of light hit the unattenuated detector. Possible if using a raw beam, but especially if the beam overfills it. Wouldn't take much. Might also have a pinhole in the attenuator.
- Fri Dec 24, 2021 12:56 pm
- Forum: Events, announcements, and news
- Topic: Vintage Lasers & Holograms
- Replies: 6
- Views: 20788
Re: Vintage Lasers & Holograms
Got the website up for the exhibit. Still need to move a late '70s Spectra-Physics model 170 Argon ion laser in, and a display case for the plasma-tubes. More holograms will also be added as they get mounted for safe display.
https://laserhistorymuseum.com/
https://laserhistorymuseum.com/
- Thu Dec 16, 2021 9:29 am
- Forum: Events, announcements, and news
- Topic: Vintage Lasers & Holograms
- Replies: 6
- Views: 20788
Re: Vintage Lasers & Holograms
If visitors interrupt my work too much, that's good! There are a few solutions for that, and it would show good general interest by the public. If not, I'll still pay the rent. The exhibit is at 5020 S. Ash Ave. in Tempe, AZ. Open noon to six, Saturday to Wednesday. An easy bike ride from the ASU ca...
- Sun Dec 12, 2021 10:18 am
- Forum: Events, announcements, and news
- Topic: Vintage Lasers & Holograms
- Replies: 6
- Views: 20788
Vintage Lasers & Holograms
I have finally gotten my new exhibit called "Vintage Lasers & Holograms" together enough to host a "soft opening" today. There are over 180 classic lasers and an equal number of associated things, including over two dozen holograms currently. The plan is to keep installing mo...
- Thu Dec 09, 2021 10:16 am
- Forum: holoforum administration
- Topic: Insults and character assassination
- Replies: 16
- Views: 14886
Re: Insults and character assassination
"By the way, what does all of this have to do with "holoforum administration"? " Why did you start this thread here, instead of taking it to the admin privately? Because you wanted to argue the issues publicly. "If he actually understands, an explanation of the principles wo...
- Thu Dec 09, 2021 10:04 am
- Forum: holoforum administration
- Topic: Insults and character assassination
- Replies: 16
- Views: 14886
Re: Insults and character assassination
"Whatever technique you used for liquid crystal displays cannot be transferred to measuring the depth of a holographic emulsion." Why? You're 100% wrong about that. "The manufacturing techniques of a liquid crystal display are different from the manufacturing technique of a holographi...
- Thu Dec 09, 2021 9:17 am
- Forum: holoforum administration
- Topic: Insults and character assassination
- Replies: 16
- Views: 14886
Re: Insults and character assassination
Real Ivy-League responses there! :roll: Notice how, when confronted with his own words, when questioned about his own posted result (which is just a graph and doesn't show he ever made the hologram claimed at all) he devolves into a babbling idiot covering his embarrasment with attempted humor, just...
- Wed Dec 08, 2021 6:22 pm
- Forum: holoforum administration
- Topic: Insults and character assassination
- Replies: 16
- Views: 14886
Re: Insults and character assassination
I see about 13nm FWHM on that graph. You're a liar too.
- Wed Dec 08, 2021 2:46 pm
- Forum: holoforum administration
- Topic: Insults and character assassination
- Replies: 16
- Views: 14886
Re: Insults and character assassination
Here, the FWHM is about ~5nm. This was for R&L optics based in Philadelphia for an underwater LIDAR system. I calculated the necessary thickness and the necessary index modulation. I then determined the DCG formulation to get the calculated modulation. Joy set up the table, and i recorded the h...
- Wed Dec 08, 2021 9:36 am
- Forum: holoforum administration
- Topic: Insults and character assassination
- Replies: 16
- Views: 14886
Re: Insults and character assassination
"Hess hates because he's complicit in misinformation, he does not understand the need for checking his statements. For pointing out misinformation, he calls me a "Troll". Wrong. Why is it that there are only pronlems with YOU. Nobody else, just YOU? Why is it that there has been no co...