User:Pranav Rathi/Notebook/OT/2010/03/25

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(Tweezer is aligned)
 
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==Entry title==
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==Tweezer is aligned==
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* OptoBio
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Our tweezer is aligned, but with an issue; as you can see there is more power to the left. I tried to fix this issue as much as i could.
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[[Image:Tweezer 03-25-10.avi|thumb|left|Tweezer]]
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I also made a new tool which will help us aligning the beam at the two end-apertures of the cage system. It's just a web-cam on a post, but web-cam captures the IR pretty well. I am planning to have two web-cams on the two ends so we can align the both ends simultaneously.
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[[Image:Picture 1.jpg|thumb|left|First end]]
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[[Image:Picture 2.jpg|thumb|left|Second End]]
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Power drift: I noticed that there is substantial power drift over the tweezers. I made this video at 2.78 W, with the reflection out of air, so I was not using oil or the glass slide. This video is around 3 minutes long and the change is obvious. I am still investigating the issue because I strongly believe that this is not due to power.
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[[Image:Power_drift.avi|thumb|left|Power Drift]]
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:[[User:Steven J. Koch|Steve Koch]] 17:27, 26 March 2010 (EDT): I like the new tweezers alignment method with webcams!  I don't quite understand what you're saying about the power fluctuations, but definitely something good to look into.
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[[Category:Optical tweezers Notes Archive]]

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Tweezer is aligned

Our tweezer is aligned, but with an issue; as you can see there is more power to the left. I tried to fix this issue as much as i could. Image:Tweezer 03-25-10.avi


I also made a new tool which will help us aligning the beam at the two end-apertures of the cage system. It's just a web-cam on a post, but web-cam captures the IR pretty well. I am planning to have two web-cams on the two ends so we can align the both ends simultaneously.

First end
First end
Second End
Second End

Power drift: I noticed that there is substantial power drift over the tweezers. I made this video at 2.78 W, with the reflection out of air, so I was not using oil or the glass slide. This video is around 3 minutes long and the change is obvious. I am still investigating the issue because I strongly believe that this is not due to power. Image:Power drift.avi

Steve Koch 17:27, 26 March 2010 (EDT): I like the new tweezers alignment method with webcams! I don't quite understand what you're saying about the power fluctuations, but definitely something good to look into.
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