Sigurthr
0
- Joined
- Dec 11, 2011
- Messages
- 4,364
- Points
- 83
I still find it oddly humorous how this was received by you guys like a closely guarded secret on how to separate wavelengths. I feel like Prometheus handing over fire, lol.
LPF Donation via Stripe | LPF Donation - Other Methods
Links below open in new window
ArcticMyst Security by Avery
8 line TUNABLE argon
- Thread starter bloompyle
- Start date
Speedy78
0
- Joined
- Dec 17, 2012
- Messages
- 2,081
- Points
- 63
I just never thought about the slit. I alzo figured they would be too close together at such a close distance but it seemed to work fine.
- Joined
- Apr 26, 2010
- Messages
- 4,175
- Points
- 83
I tried before with my HeNe, I just couldn't perfect it without the razors.
vk2fro
0
- Joined
- Nov 30, 2009
- Messages
- 1,304
- Points
- 63
Nice new toy bloom - I'm jealous - go away on holidays, and come back and find yet another member has a new gas laser - and tuneable too!
Sig, I'll try the slit method once I get my argon - prolly mount it all on a baseplate I can get from a local metal suppliers, a couple of micro mounts, and find something I can use for the diffraction grating's stage
Sig, I'll try the slit method once I get my argon - prolly mount it all on a baseplate I can get from a local metal suppliers, a couple of micro mounts, and find something I can use for the diffraction grating's stage
norbyx
0
- Joined
- Apr 18, 2013
- Messages
- 1,202
- Points
- 48
I would love to see a picture or video of the laser and how it tunes ...
- Joined
- Jan 14, 2011
- Messages
- 3,816
- Points
- 63
Sig, I just had never thought of it!
My question is, do glass reflecting gratings produce only first order dots? Because otherwise there would be power loss :\
My question is, do glass reflecting gratings produce only first order dots? Because otherwise there would be power loss :\
- Joined
- Apr 26, 2010
- Messages
- 4,175
- Points
- 83
I can snap some after work.
Sigurthr
0
- Joined
- Dec 11, 2011
- Messages
- 4,364
- Points
- 83
It depends on the lines/mm but a diffraction mirror will not have a 0 order unsplit beam so you get the most in each separated line.
I *think* a 3000line/mm grating will produce only a single order. I may be wrong, it has been many years since I've seen high grade gratings in person.
- Joined
- Jan 14, 2011
- Messages
- 3,816
- Points
- 63
Sig? This image seems to suggest that there are 0th order beams? It's from ThorLabs.
Sigurthr
0
- Joined
- Dec 11, 2011
- Messages
- 4,364
- Points
- 83
No idea then. I've seen one used in person years ago, there was no mixed beam visible but perhaps it was occluded somehow before exiting the aperture.
Speedy78
0
- Joined
- Dec 17, 2012
- Messages
- 2,081
- Points
- 63
Not sure if this answers your question or not bu my 1800 line mirror produces 2 full 6 line sets and one mixed split off in between them.
- Joined
- Sep 12, 2007
- Messages
- 9,399
- Points
- 113
There's a LOT of power loss anyway. Most of the beam isn't diffracted at all, and you'd be lucky to get much more than 15% in a single first order.
- Joined
- Jan 14, 2011
- Messages
- 3,816
- Points
- 63
That's a shame. Then there is no way to split a beam without a huge amount of power loss, I take it? I was thinking may prism... but not sure.
- Joined
- Apr 26, 2010
- Messages
- 4,175
- Points
- 83
A series of prisms is the only thing that comes to mind.
- Joined
- Jan 14, 2011
- Messages
- 3,816
- Points
- 63
I was thinking about that....
- Joined
- Apr 26, 2010
- Messages
- 4,175
- Points
- 83
A diffraction mirror perhaps.
Last edited:
