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 > Science & Lasers



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



Reply
 
LinkBack Thread Tools Display Modes
Old 01-31-2011, 11:17 PM #1
Mem Mem is offline
Junior Member
 
Join Date: Dec 2010
Posts: 2
Rep Power: 0
Mem is on a distinguished road
Mem Mem is offline
Junior Member
 
Join Date: Dec 2010
Posts: 2
Rep Power: 0
Mem is on a distinguished road
Default Backwards Laser

I just read an interesting article where a high power UV laser pulse is used to generate an IR laser return pulse out of thin air. This is the link:
Physicists create 'backward laser' - physicsworld.com


Mem is offline   Reply With Quote







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







Old 02-01-2011, 12:07 AM #2
Trevor's Avatar
Class 3B Laser
 
Join Date: Jul 2009
Location: Boulder, CO
Posts: 4,506
Rep Power: 2565
Trevor has a reputation beyond reputeTrevor has a reputation beyond reputeTrevor has a reputation beyond reputeTrevor has a reputation beyond reputeTrevor has a reputation beyond reputeTrevor has a reputation beyond reputeTrevor has a reputation beyond reputeTrevor has a reputation beyond reputeTrevor has a reputation beyond reputeTrevor has a reputation beyond reputeTrevor has a reputation beyond repute
Trevor Trevor is offline
Class 3B Laser
Trevor's Avatar
 
Join Date: Jul 2009
Location: Boulder, CO
Posts: 4,506
Rep Power: 2565
Trevor has a reputation beyond reputeTrevor has a reputation beyond reputeTrevor has a reputation beyond reputeTrevor has a reputation beyond reputeTrevor has a reputation beyond reputeTrevor has a reputation beyond reputeTrevor has a reputation beyond reputeTrevor has a reputation beyond reputeTrevor has a reputation beyond reputeTrevor has a reputation beyond reputeTrevor has a reputation beyond repute
Default Re: Backwards Laser

Interesting article; I'd like to see where this technology goes.

Wrong forum.

-Trevor
__________________
Code:
23:10 <ARG>    nothing has blown up yet :)
23:10 <Trevor> that is a distressingly low standard for success
Trevor is offline   Reply With Quote
Old 02-01-2011, 12:31 AM #3
Mem Mem is offline
Junior Member
 
Join Date: Dec 2010
Posts: 2
Rep Power: 0
Mem is on a distinguished road
Mem Mem is offline
Junior Member
 
Join Date: Dec 2010
Posts: 2
Rep Power: 0
Mem is on a distinguished road
Default Re: Backwards Laser

How did this post wind up in here? I thought I was posting to Science and Lasers. Anyone know how to move it?
Mem is offline   Reply With Quote
Old 02-01-2011, 12:37 AM #4
Trevor's Avatar
Class 3B Laser
 
Join Date: Jul 2009
Location: Boulder, CO
Posts: 4,506
Rep Power: 2565
Trevor has a reputation beyond reputeTrevor has a reputation beyond reputeTrevor has a reputation beyond reputeTrevor has a reputation beyond reputeTrevor has a reputation beyond reputeTrevor has a reputation beyond reputeTrevor has a reputation beyond reputeTrevor has a reputation beyond reputeTrevor has a reputation beyond reputeTrevor has a reputation beyond reputeTrevor has a reputation beyond repute
Trevor Trevor is offline
Class 3B Laser
Trevor's Avatar
 
Join Date: Jul 2009
Location: Boulder, CO
Posts: 4,506
Rep Power: 2565
Trevor has a reputation beyond reputeTrevor has a reputation beyond reputeTrevor has a reputation beyond reputeTrevor has a reputation beyond reputeTrevor has a reputation beyond reputeTrevor has a reputation beyond reputeTrevor has a reputation beyond reputeTrevor has a reputation beyond reputeTrevor has a reputation beyond reputeTrevor has a reputation beyond reputeTrevor has a reputation beyond repute
Default Re: Backwards Laser

Click the and report it.

I already submitted one.

-Trevor
__________________
Code:
23:10 <ARG>    nothing has blown up yet :)
23:10 <Trevor> that is a distressingly low standard for success
Trevor is offline   Reply With Quote
Old 02-01-2011, 12:57 AM #5
Ears and Eggs's Avatar
Super Moderator
 
Join Date: Oct 2007
Location: Ottawa, Canada
Posts: 2,353
Rep Power: 7856
Ears and Eggs has a reputation beyond reputeEars and Eggs has a reputation beyond reputeEars and Eggs has a reputation beyond reputeEars and Eggs has a reputation beyond reputeEars and Eggs has a reputation beyond reputeEars and Eggs has a reputation beyond reputeEars and Eggs has a reputation beyond reputeEars and Eggs has a reputation beyond reputeEars and Eggs has a reputation beyond reputeEars and Eggs has a reputation beyond reputeEars and Eggs has a reputation beyond repute
Send a message via Skype™ to Ears and Eggs
Ears and Eggs Ears and Eggs is online now
Super Moderator
Ears and Eggs's Avatar
 
Join Date: Oct 2007
Location: Ottawa, Canada
Posts: 2,353
Rep Power: 7856
Ears and Eggs has a reputation beyond reputeEars and Eggs has a reputation beyond reputeEars and Eggs has a reputation beyond reputeEars and Eggs has a reputation beyond reputeEars and Eggs has a reputation beyond reputeEars and Eggs has a reputation beyond reputeEars and Eggs has a reputation beyond reputeEars and Eggs has a reputation beyond reputeEars and Eggs has a reputation beyond reputeEars and Eggs has a reputation beyond reputeEars and Eggs has a reputation beyond repute
Send a message via Skype™ to Ears and Eggs
Default Re: Backwards Laser

Moved
__________________
Ears and Eggs is online now   Reply With Quote
Old 02-01-2011, 03:52 PM #6
Benm's Avatar
Class 4 Laser
 
Join Date: Aug 2007
Location: Netherlands
Posts: 7,437
Rep Power: 18210
Benm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond repute
Benm Benm is online now
Class 4 Laser
Benm's Avatar
 
Join Date: Aug 2007
Location: Netherlands
Posts: 7,437
Rep Power: 18210
Benm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond repute
Default Re: Backwards Laser

Interesting stuff!

I don't know why it would be called a backwards laser though, its just an optically pumped gas laser. It's obviously superradiant so it does not need mirrors, but the clever bit is just getting the discharge to a desireable shape - essentially similar to the shape of the spark in a nitrogen laser.... but a lot smaller.
Benm is online now   Reply With Quote
Old 02-01-2011, 11:38 PM #7
Bluefan's Avatar
Class 3R Laser
 
Join Date: Aug 2009
Location: The Netherlands
Posts: 1,482
Rep Power: 62
Bluefan has a reputation beyond reputeBluefan has a reputation beyond reputeBluefan has a reputation beyond reputeBluefan has a reputation beyond reputeBluefan has a reputation beyond reputeBluefan has a reputation beyond reputeBluefan has a reputation beyond reputeBluefan has a reputation beyond reputeBluefan has a reputation beyond reputeBluefan has a reputation beyond reputeBluefan has a reputation beyond repute
Bluefan Bluefan is offline
Class 3R Laser
Bluefan's Avatar
 
Join Date: Aug 2009
Location: The Netherlands
Posts: 1,482
Rep Power: 62
Bluefan has a reputation beyond reputeBluefan has a reputation beyond reputeBluefan has a reputation beyond reputeBluefan has a reputation beyond reputeBluefan has a reputation beyond reputeBluefan has a reputation beyond reputeBluefan has a reputation beyond reputeBluefan has a reputation beyond reputeBluefan has a reputation beyond reputeBluefan has a reputation beyond reputeBluefan has a reputation beyond repute
Default Re: Backwards Laser

It's a short wavelength, so a large Rayleigh length is possible with the same beam diameter. But indeed it really sounds like a superradiant laser, which actually lases both in forward and backward direction.
Bluefan 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 05:17 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