User:Pranav Rathi/Notebook/OT/2010/11/11/Small Bead Power Spectrum & DOG

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== Power Spectrum ==
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I have done power spectrum analysis for small bead (.5 um) first. I used more than four different beads, (4 different sets one for each); last set contains more than 1 bead.  I am discussing parameters, process and the results.
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===Parameters===
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I used AOM input voltage of 1.45 volts which corresponds to 50mW of laser power before the objective. I used low gain (step #3) on the QPD controller. All other parameters can be seen in the first few slides below. To see the slides clearly click on “view on slide share” in the lower right corner.
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<div align="center"><html><div style="width:425px" id="__ss_5746051"><strong style="display:block;margin:12px 0 4px"><a href="http://www.slideshare.net/pranavrathi/smallbeadpwsp2" title="Smallbeadpwsp2">Smallbeadpwsp2</a></strong><object id="__sse5746051" width="425" height="355"><param name="movie" value="http://static.slidesharecdn.com/swf/ssplayer2.swf?doc=smallbeadpwsp2-101111154335-phpapp02&stripped_title=smallbeadpwsp2&userName=pranavrathi" /><param name="allowFullScreen" value="true"/><param name="allowScriptAccess" value="always"/><embed name="__sse5746051" src="http://static.slidesharecdn.com/swf/ssplayer2.swf?doc=smallbeadpwsp2-101111154335-phpapp02&stripped_title=smallbeadpwsp2&userName=pranavrathi" type="application/x-shockwave-flash" allowscriptaccess="always" allowfullscreen="true" width="425" height="355"></embed></object><div style="padding:5px 0 12px">View more <a href="http://www.slideshare.net/">presentations</a> from <a href="http://www.slideshare.net/pranavrathi">pranavrathi</a>.</div></div></html></div>
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Revision as of 17:34, 11 November 2010

Power Spectrum

I have done power spectrum analysis for small bead (.5 um) first. I used more than four different beads, (4 different sets one for each); last set contains more than 1 bead. I am discussing parameters, process and the results.

Parameters

I used AOM input voltage of 1.45 volts which corresponds to 50mW of laser power before the objective. I used low gain (step #3) on the QPD controller. All other parameters can be seen in the first few slides below. To see the slides clearly click on “view on slide share” in the lower right corner.

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