User:Pranav Rathi/Notebook/OT/2010/07/29/Tweezer Issues

The number of issues I want to look into before we plan the optical setup:

I am starting to work on these. If you guys can think of anything else please add.
 * 1) The possible x or/and y signal drift at QPD, when we increase the laser power: Is it due to AOM or is it laser? How we solve it?
 * 2) Need of Imaging AOM at the back aperture of the objective and further at QPD.
 * 3) How well our new diachronic works?
 * 4) Other noise & vibration issues.


 * Detail list

1. You may be able to investigate #1 using the current laser. You could set up the detector on the table, put in a 1:1 telescope to image the AOM onto the detector and then move detector in +/- z direction to explore the magnitude of the effect.

2. This is related to #1. If we were using the AOM for steering (which we aren’t), it’d be necessary. However, as mentioned above, imaging may help with the XY signal related to AOM voltage.

3. Noise / drift will be a big issue. There is also the looming huge task of putting everything in a box. Also, we discussed moving some equipment into the chase, which will be helpful but will require some engineering and possibly some programming.

4. Any programming needs that I can work on?

5. DNA Constructs

6. Tethering efficiently

7. Working with the new piezo focuser … this will create some programming tasks too