Inside the cavity...wow!
Originally Posted by
142laser
Sam Goldwasser and I have a new batch of Helium Neon laser tubes for home experimenters and school labs wanting to show how lasers are aligned. Most of these have one mirror and one Brewster window and are new old stock. All the tubes have been tested with appropriate mirrors by Sam. Here is a link to the correct section of the Laser FAQ for sale page:
http://repairfaq.cis.upenn.edu/Misc/sale/#scpheneb
We accept PayPal and can usually ship the next day after payment is received. Phil Bergeron, 142laser, pbergero@usf<dot>edu, (813) 974-2378
BTW these tubes in red can have 30-60 watts of power inside the cavity...the beam looks awesome in the air between the Brewster stub and the mirror-cool.
Here are a couple pics of the green ones...cool stuff.
Last edited by 142laser; 10-22-2012 at 09:29.
Reason: add a photo
Phil Bergeron( AKA 142laser)