User:Pranav Rathi/Notebook/OT/2010/03/03

From OpenWetWare
< User:Pranav Rathi‎ | Notebook‎ | OT‎ | 2010‎ | 03
Revision as of 11:23, 11 March 2010 by Pranav Rathi (talk | contribs) (Entry title)
Jump to: navigation, search
Owwnotebook icon.png Project name <html><img src="/images/9/94/Report.png" border="0" /></html> Main project page
<html><img src="/images/c/c3/Resultset_previous.png" border="0" /></html>Previous entry<html>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</html>Next entry<html><img src="/images/5/5c/Resultset_next.png" border="0" /></html>

Today 03/05/10 I did a quick experiment to measure that how much intensity we might have to cut down to snap the beam profile without saturating ccd. It turned out to be roughly 1e-7W, if input is 1W. Later I explored the possibility of using multiple reflections to cut down the intensity. It turned out that 1 plane glass strip cut down the intensity 10%. So 7 consecutively reflection will cut down the intensity up to roughly 1e-7. BUT each reflections contain 2 reflections out of two surfaces (I used 1mm thick), so total 14 REFLECTIONS. If use just an ultra thin may be a glass membrane carefully with one or two NDs than this can be done and beam profile might still be preserved. Still working……

I emailed Mr. Gunn on 03/04/10, about profiling the beam at higher powers, and waiting for his reply.