Search found 99 matches

by pluto
Sun Feb 14, 2016 6:16 pm
Forum: Beginning Holography
Topic: Fizeau Interferometry
Replies: 6
Views: 3354

Re: Fizeau Interferometry

So could this type of interferometer be used to detect mode hopping?

I think I'll give the Michelson a go, but I need to think of a better way to mount and position mirrors, it can be quite a pain...
by pluto
Sun Feb 14, 2016 7:41 am
Forum: Beginning Holography
Topic: Fizeau Interferometry
Replies: 6
Views: 3354

Fizeau Interferometry

Hello, I'm trying to get an idea of how big of an issue vibration will be. I often hear about people using Michelson interferometers for this. I don't have a beam splitter cube or a half silvered mirror yet, so I was wondering if anybody has used Fizeau interferometry to gauge the amount of vibratio...
by pluto
Fri Feb 12, 2016 5:06 pm
Forum: General Holography
Topic: LED flashlights
Replies: 1
Views: 1858

Re: LED flashlights

Just a warning about those cheap Chinese 18650 batteries and chargers. 18650 batteries can have quite low internal resistance (as some are designed for high current draw) and can vent or blow up if either the battery or charger are defective. It might be unlikely but still worth being cautious.
by pluto
Wed Feb 10, 2016 10:58 pm
Forum: Beginning Holography
Topic: What's the consensus on optical tables?
Replies: 30
Views: 14493

Re: What's the consensus on optical tables?

Thanks for the replies, lots of great info. Named after the greek god, by the way :) I would love to visit a hologram exhibition! I have never actually seen a proper hologram in real life. After reading your post, I looked at the back of my credit card... It is a hologram, but with no parallax! How ...
by pluto
Sat Feb 06, 2016 7:25 pm
Forum: Beginning Holography
Topic: What's the consensus on optical tables?
Replies: 30
Views: 14493

Re: What's the consensus on optical tables?

even a shaky old card table will work because stability is only needed between the object and the recording plate Does the laser itself require the same level of vibration dampening? How critical is keeping the laser head motionless? I was also wondering if it's possible to use two different lasers...
by pluto
Sat Feb 06, 2016 12:31 pm
Forum: General Holography
Topic: Introductions
Replies: 88
Views: 4837307

Re: Introductions

John Klayer wrote:Pluto, why not simply use your real name?
Maybe Pluto is my real name! Haha, no, just privacy concerns.
by pluto
Fri Feb 05, 2016 2:43 am
Forum: Off Topic
Topic: holographyforum IRC channel?
Replies: 15
Views: 13853

Re: holographyforum IRC channel?

Original poster here, I created a new account. I think you have a good point about the forum having history, but things like Facebook have already come along and people seem to prefer to congregate there. The history is still here if it's needed. I don't particularly like Facebook, nor do I think it...
by pluto
Fri Feb 05, 2016 2:29 am
Forum: General Holography
Topic: Introductions
Replies: 88
Views: 4837307

Re: Introductions

Hello (again) all! My former account was "hologram" -- I decided to ditch the awfully unimaginative username while I was still relatively new :)
by pluto
Fri Feb 05, 2016 2:27 am
Forum: Beginning Holography
Topic: What's the consensus on optical tables?
Replies: 30
Views: 14493

What's the consensus on optical tables?

Being new to holography, I've read through these forums quite a bit looking for a somewhat affordable optical table solution. I would much rather spend that money on a better laser if I can get away with it! I don't mind putting in some work if it means better bang for my buck, as long as I'm not sh...