please rate
this thread
  •  
  • Subject
  • Author
  • Date
| ---> Re: Laser noise William Sommerw...03-04-2010
`--> Re: Laser noise Samuel M. Goldw...03-04-2010
Posted by GregS on March 4, 2010, 12:15 pm
 

I was trying to attempt to measure noise on a 6 watt laser. The main problem
is trying to focus on something without it melting or catching fire.
I was trying to look at the reflective light withg a photodiode.
I guess there migh be some fancy expensive device ??

greg

Posted by Meat Plow on March 4, 2010, 12:30 pm
 

On Thu, 04 Mar 2010 17:15:05 GMT, zekfrivo@zekfrivolous.com
(GregS)wrote:


Indium Gallium Arsenide power wavehead photodetector.

Posted by William Sommerwerck on March 4, 2010, 1:09 pm
 

What about using a lens to spread the light?



Posted by Meat Plow on March 4, 2010, 1:28 pm
 

On Thu, 4 Mar 2010 10:09:27 -0800, "William Sommerwerck"


Wouldn't that effect or distort the noise or influence the reading
otherwise?

Posted by William Sommerwerck on March 4, 2010, 1:34 pm
 


Well, at the least it would reduce the absolute value of noise read. But if
the light were spread evenly, and you knew the area ratio of spread to
direct light...



  • Subject
  • Date
  • Laser
  • October 27, 2008, 6:13 pm