Laser pointer discussion. Read/write reviews of laser pointers and laser pointer companies. Learn about all types of laser pointers and lasers





Welcome to Laser Pointer Forums! If you are looking for a laser pointer or want to compare different laser pointer companies, you may want to check out the LPF Laser Pointer Company Database. The link will open in a new window for your convenience.








Green Laser Pointers by Category Blue Laser Pointers by Category Red Laser Pointers by Category
Yellow Laser Pointers by Category Violet Laser Pointers by Category Orange Laser Pointers by Category
Top Laser Pointers by Power - 1 Watt+ Top Laser Pointers by Power - 500mW+ Top Laser Pointers by Power - 250mW+
Laser Pointer Database High Power Laser Pointers Laser Pointer Diodes
Laser Technology Laser Pointer Parts Lasers by Wavelength
Top 10 Laser Pointer Companies Laser Pointer Company Database Visible Beam Laser Pointers


One laser store meets all your needs

























Go Back   Laser Pointer Forums - Discuss Laser Pointers > Lasers > Gas Lasers



LPF List of Laser Pointer Companies (link opens new window)



Reply
 
LinkBack Thread Tools Display Modes
Old 08-23-2013, 02:27 AM #1
The Lightning Stalker's Avatar
Class 3B Laser
 
Join Date: Aug 2013
Location: MI, US
Posts: 2,654
Rep Power: 716
The Lightning Stalker has a reputation beyond reputeThe Lightning Stalker has a reputation beyond reputeThe Lightning Stalker has a reputation beyond reputeThe Lightning Stalker has a reputation beyond reputeThe Lightning Stalker has a reputation beyond reputeThe Lightning Stalker has a reputation beyond reputeThe Lightning Stalker has a reputation beyond reputeThe Lightning Stalker has a reputation beyond reputeThe Lightning Stalker has a reputation beyond reputeThe Lightning Stalker has a reputation beyond reputeThe Lightning Stalker has a reputation beyond repute
The Lightning Stalker The Lightning Stalker is offline
Class 3B Laser
The Lightning Stalker's Avatar
 
Join Date: Aug 2013
Location: MI, US
Posts: 2,654
Rep Power: 716
The Lightning Stalker has a reputation beyond reputeThe Lightning Stalker has a reputation beyond reputeThe Lightning Stalker has a reputation beyond reputeThe Lightning Stalker has a reputation beyond reputeThe Lightning Stalker has a reputation beyond reputeThe Lightning Stalker has a reputation beyond reputeThe Lightning Stalker has a reputation beyond reputeThe Lightning Stalker has a reputation beyond reputeThe Lightning Stalker has a reputation beyond reputeThe Lightning Stalker has a reputation beyond reputeThe Lightning Stalker has a reputation beyond repute
Lightbulb Flame Pumped Laser

I had been thinking about CO2 lasers and the YAL-1 the other day when I was sitting in front of a bonfire and it occurred to me that there must be some stimulated emissions type of thing going on in the fire. So I thought why not put some ZnSe optics around a flame of some kind and use the energy already imparted to the molecules as a pump. Well, apparently I am not the first to come up with this idea.

Flame pumping and infrared maser action in CO2

So, apparently this has already been done and terrific output powers can be achieved. If there is anyone out there in EDU, I imagine this would be a good read as I can't afford to purchase the full article. It is possible that much of the heat felt when standing next to a large fire is from 10.6um emission of the CO2 molecules. Would a standard diffraction grating even work at this frequency? If so, how would you even "see" an emission line at this low of a wavelength? Just a few thoughts in the hope that this gets someone else's brain out there working.


The Lightning Stalker is offline   Reply With Quote







LPF List of Laser Pointer Companies (link opens new window)







Old 08-28-2013, 12:45 AM #2
Cyparagon's Avatar
Class 4 Laser
 
Join Date: Sep 2007
Location: Wisconsin
Posts: 9,141
Rep Power: 9321
Cyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond repute
Cyparagon Cyparagon is online now
Class 4 Laser
Cyparagon's Avatar
 
Join Date: Sep 2007
Location: Wisconsin
Posts: 9,141
Rep Power: 9321
Cyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond repute
Default Re: Flame Pumped Laser

Quote:
Originally Posted by The Lightning Stalker View Post
It is possible that much of the heat felt when standing next to a large fire is from 10.6um emission of the CO2 molecules
No. Almost all the light from a campfire is blackbody radiation.

Quote:
Originally Posted by The Lightning Stalker View Post
Would a standard diffraction grating even work at this frequency?
No. You would have to make your own double-slit if you wanted to split mid-IR.

Quote:
Originally Posted by The Lightning Stalker View Post
how would you even "see" an emission line at this low of a wavelength?
The same way you "see" the heat from the campfire. You can also buy very expensive equipment to analyse it.
__________________
A problem well stated is a problem half solved.
Cyparagon is online now   Reply With Quote
Old 08-28-2013, 10:02 PM #3
The Lightning Stalker's Avatar
Class 3B Laser
 
Join Date: Aug 2013
Location: MI, US
Posts: 2,654
Rep Power: 716
The Lightning Stalker has a reputation beyond reputeThe Lightning Stalker has a reputation beyond reputeThe Lightning Stalker has a reputation beyond reputeThe Lightning Stalker has a reputation beyond reputeThe Lightning Stalker has a reputation beyond reputeThe Lightning Stalker has a reputation beyond reputeThe Lightning Stalker has a reputation beyond reputeThe Lightning Stalker has a reputation beyond reputeThe Lightning Stalker has a reputation beyond reputeThe Lightning Stalker has a reputation beyond reputeThe Lightning Stalker has a reputation beyond repute
The Lightning Stalker The Lightning Stalker is offline
Class 3B Laser
The Lightning Stalker's Avatar
 
Join Date: Aug 2013
Location: MI, US
Posts: 2,654
Rep Power: 716
The Lightning Stalker has a reputation beyond reputeThe Lightning Stalker has a reputation beyond reputeThe Lightning Stalker has a reputation beyond reputeThe Lightning Stalker has a reputation beyond reputeThe Lightning Stalker has a reputation beyond reputeThe Lightning Stalker has a reputation beyond reputeThe Lightning Stalker has a reputation beyond reputeThe Lightning Stalker has a reputation beyond reputeThe Lightning Stalker has a reputation beyond reputeThe Lightning Stalker has a reputation beyond reputeThe Lightning Stalker has a reputation beyond repute
Default Re: Flame Pumped Laser

I had almost completely forgotten about this. If it works, I can think of a couple advantages of a flame pumped laser and a few disadvantages. One advantage would be no bulky HV power supply. All of the power comes directly from combustion. Another would be operation at atmospheric pressure. No vacuum pumps. Some disadvantages might be difficulty controlling the effective output and flicker.

After doing some more reading, however I don't expect very much output from something like this. It appears that at higher temperatures CO2 stays mostly in 010, not the 100 energy level needed to lase. The gasses would have to be cooled very quickly after combustion before the states have a chance to decay. It's something to try though if I ever end up with the right optics. I'm sure some lasing would happen even at the higher temperatures, but it wouldn't be terribly efficient.
The Lightning Stalker is offline   Reply With Quote
Old 09-14-2013, 06:57 PM #4
Class 2M Laser
 
Join Date: May 2009
Posts: 955
Rep Power: 1542
LSRFAQ has a reputation beyond reputeLSRFAQ has a reputation beyond reputeLSRFAQ has a reputation beyond reputeLSRFAQ has a reputation beyond reputeLSRFAQ has a reputation beyond reputeLSRFAQ has a reputation beyond reputeLSRFAQ has a reputation beyond reputeLSRFAQ has a reputation beyond reputeLSRFAQ has a reputation beyond reputeLSRFAQ has a reputation beyond reputeLSRFAQ has a reputation beyond repute
LSRFAQ LSRFAQ is offline
Class 2M Laser
 
Join Date: May 2009
Posts: 955
Rep Power: 1542
LSRFAQ has a reputation beyond reputeLSRFAQ has a reputation beyond reputeLSRFAQ has a reputation beyond reputeLSRFAQ has a reputation beyond reputeLSRFAQ has a reputation beyond reputeLSRFAQ has a reputation beyond reputeLSRFAQ has a reputation beyond reputeLSRFAQ has a reputation beyond reputeLSRFAQ has a reputation beyond reputeLSRFAQ has a reputation beyond reputeLSRFAQ has a reputation beyond repute
Default Re: Flame Pumped Laser

There once upon a time was a flame pumped, very tiny, copper vapor. The developer said it took him about a year to get the gas doping, mirrors, and high speed flow right.

Not a easy one, he used acetylene with the bromide salts.

The flow has to be fast, the lasing medium needs to pass through the optical in a few nanoseconds.

I cant find the reference, and even then, details were sparse.

Steve

Last edited by LSRFAQ; 09-14-2013 at 07:00 PM.
LSRFAQ is offline   Reply With Quote
Old 09-18-2013, 02:25 PM #5
AUS's Avatar
AUS AUS is offline
Class 2M Laser
 
Join Date: Apr 2012
Location: Albury NSW Australia
Posts: 567
Rep Power: 110
AUS has a reputation beyond reputeAUS has a reputation beyond reputeAUS has a reputation beyond reputeAUS has a reputation beyond reputeAUS has a reputation beyond reputeAUS has a reputation beyond reputeAUS has a reputation beyond reputeAUS has a reputation beyond reputeAUS has a reputation beyond reputeAUS has a reputation beyond reputeAUS has a reputation beyond repute
AUS AUS is offline
Class 2M Laser
AUS's Avatar
 
Join Date: Apr 2012
Location: Albury NSW Australia
Posts: 567
Rep Power: 110
AUS has a reputation beyond reputeAUS has a reputation beyond reputeAUS has a reputation beyond reputeAUS has a reputation beyond reputeAUS has a reputation beyond reputeAUS has a reputation beyond reputeAUS has a reputation beyond reputeAUS has a reputation beyond reputeAUS has a reputation beyond reputeAUS has a reputation beyond reputeAUS has a reputation beyond repute
Default Re: Flame Pumped Laser

I was reading a patent on flame excited lasers a while ago. From memory you need a very stable high speed burning jet of gas through a special nozzle in a cavity with optics. I think the actual lasing medium was fed in with the fuel mixture (I think it was a fairly exotic gas mix).

This isn't too different from the huge military chemical lasers which are basically a big jet engine with optics at one end burning nasty stuff containing fluorine and chlorine.
__________________
405nm 100mW Ultrafire C3
445nm 750mW Ultrafire W501B
445nm 1.8W 9mm diode Ultrafire C8

473nm 100mw DPSS Labby
488nm 12mW Uniphase Single Line Argon Gas laser.
532nm 315mW Lab laser
532nm 30mW eBay pointer
632.8nm 2mW HeNe
638nm 360mW Titanium Ice
660nm 120mW Energizer AAA MacGuyver build
660nm 300mW Cree C3 Stainless build
850nm (bugger all power probably 10mW) in NV equipment
---------------------------------------
600-700nm protection glasses
190-540nm protection glasses
---------------------------------------
Various Amateur radio & broadcast radio bits.... AWA P5 all valve 500W MW TX. 400 watt AM17 ex VHF aircraft band amplifier on 144 MHz.
AUS is offline   Reply With Quote
Old 09-19-2013, 04:29 AM #6
The Lightning Stalker's Avatar
Class 3B Laser
 
Join Date: Aug 2013
Location: MI, US
Posts: 2,654
Rep Power: 716
The Lightning Stalker has a reputation beyond reputeThe Lightning Stalker has a reputation beyond reputeThe Lightning Stalker has a reputation beyond reputeThe Lightning Stalker has a reputation beyond reputeThe Lightning Stalker has a reputation beyond reputeThe Lightning Stalker has a reputation beyond reputeThe Lightning Stalker has a reputation beyond reputeThe Lightning Stalker has a reputation beyond reputeThe Lightning Stalker has a reputation beyond reputeThe Lightning Stalker has a reputation beyond reputeThe Lightning Stalker has a reputation beyond repute
The Lightning Stalker The Lightning Stalker is offline
Class 3B Laser
The Lightning Stalker's Avatar
 
Join Date: Aug 2013
Location: MI, US
Posts: 2,654
Rep Power: 716
The Lightning Stalker has a reputation beyond reputeThe Lightning Stalker has a reputation beyond reputeThe Lightning Stalker has a reputation beyond reputeThe Lightning Stalker has a reputation beyond reputeThe Lightning Stalker has a reputation beyond reputeThe Lightning Stalker has a reputation beyond reputeThe Lightning Stalker has a reputation beyond reputeThe Lightning Stalker has a reputation beyond reputeThe Lightning Stalker has a reputation beyond reputeThe Lightning Stalker has a reputation beyond reputeThe Lightning Stalker has a reputation beyond repute
Default Re: Flame Pumped Laser

The common theme here seems to be a rocket-like discharge. The excited states don't last
very long, so the atoms have to get into the cavity quickly. Then they lase fast and have to
be replaced quickly with new ones.

I can see why that guy decided to go with copper vapor. It will lase at higher temperatures,
so there doesn't need to be special nozzles for cooling as in a CO2 chemical laser.
__________________
ALL NEW MEMBERS MUST READ THIS!!! --> http://www.laserpointersafety.com

"Where, now, is the way by which the light distributes itself" - Job 38:24

YouTube Channel
The Lightning Stalker is offline   Reply With Quote
Reply





Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On











Loading








Green Laser Pointers by Category Blue Laser Pointers by Category Red Laser Pointers by Category
Yellow Laser Pointers by Category Violet Laser Pointers by Category Orange Laser Pointers by Category
Top Laser Pointers by Power - 1 Watt+ Top Laser Pointers by Power - 500mW+ Top Laser Pointers by Power - 250mW+
Laser Pointer Database High Power Laser Pointers Laser Pointer Diodes






Privacy Policy | Advertising Disclaimer | Terms of Use


 


All times are GMT. The time now is 01:26 PM.


Powered by: vBulletin
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.
Search Engine Friendly URLs by vBSEO
Privacy Policy | Advertising Disclaimer | Terms of Use
Copyright (C) 2017 Laser Pointer Forums, LLC