User:Pranav Rathi/Notebook/OT/2010/04/01: Difference between revisions
Pranav Rathi (talk | contribs) No edit summary |
Pranav Rathi (talk | contribs) |
||
Line 8: | Line 8: | ||
==High power beam profiling== | ==High power beam profiling== | ||
Today I discovered a new way to profile a beam at high power. I used a regular 1064nm mirror. The mirror gives a 99.99% reflection at 45 degrees. So I used the mirror in between CCD camera and the AOM at some angle less than 45. In this way transmission through the mirror can be controlled. its highest at 0 and lowest at 45. In between desired transmission can be achieved. I received a transmission of 99mW at 4.10W at the angle of roughly 15 degrees. I used the CCD with 3+3+2 OD filters. This setup does not distort the beam profile too much and it’s safe for the OD filters. We got some good pictures through this process; the link is presented below. | Today I discovered a new way to profile a beam at high power. I used a regular 1064nm mirror. The mirror gives a 99.99% reflection at 45 degrees. So I used the mirror in between CCD camera and the AOM at some angle less than 45. In this way transmission through the mirror can be controlled. its highest at 0 and lowest at 45. In between desired transmission can be achieved. I received a transmission of 99mW at 4.10W at the angle of roughly 15 degrees. I used the CCD with 3+3+2 OD filters. This setup does not distort the beam profile too much and it’s safe for the OD filters. We got some good pictures through this process; the link is presented below. | ||
<br> | |||
<html><embed type="application/x-shockwave-flash" src="http://picasaweb.google.com/s/c/bin/slideshow.swf" width="600" height="400" flashvars="host=picasaweb.google.com&captions=1&hl=en_US&feat=flashalbum&RGB=0x000000&feed=http%3A%2F%2Fpicasaweb.google.com%2Fdata%2Ffeed%2Fapi%2Fuser%2Fanthonysalvagno%2Falbumid%2F5455280471248619521%3Falt%3Drss%26kind%3Dphoto%26hl%3Den_US" pluginspage="http://www.macromedia.com/go/getflashplayer"></embed></html><br> | |||
---- | ---- | ||
Go to the link for detail view: | Go to the link for detail view: |
Revision as of 13:08, 15 November 2012
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> </html>Next entry<html><img src="/images/5/5c/Resultset_next.png" border="0" /></html> |
High power beam profilingToday I discovered a new way to profile a beam at high power. I used a regular 1064nm mirror. The mirror gives a 99.99% reflection at 45 degrees. So I used the mirror in between CCD camera and the AOM at some angle less than 45. In this way transmission through the mirror can be controlled. its highest at 0 and lowest at 45. In between desired transmission can be achieved. I received a transmission of 99mW at 4.10W at the angle of roughly 15 degrees. I used the CCD with 3+3+2 OD filters. This setup does not distort the beam profile too much and it’s safe for the OD filters. We got some good pictures through this process; the link is presented below.
Go to the link for detail view: [1] |