1. Jose Luis Sirvent Supervisor: Jonathan Emery Student Meeting 31 October 2011

2.  A) If a collimator is ordered it would be good to make a custom accessory.

3.  Last week simulations/calculus with Zemax showed that this approach has a high tolerance in linear distance. ◦ Limits: 4.5 mm distance to disk, diffraction, aligment angle.

4.  A) If a collimator is ordered it would be good to make a custom accessory. ◦ This week I still gathering information to improve this approach

5.  Spherical aberration: ◦ I said that the focal distances in the simulations doesn’t fit the specifications. ◦ I made a mistake, It was spherical aberration. ◦ Typical in Plano/Convex lenses (Our theoric Accu-Glass colimator)

6.  Spherical aberration: ◦ Possible solutions:  Meeting with Aurelie (how to quantify the aberration and improve my knowledge of the program)  Achromat Douplets  Contact with Edmund Optics: No possible achromats, not vacuum compatible and temperature too high, but yes Aspheric lens.  Achromatic LensAspheric lens

7.  Spherical aberration: ◦ Possible solutions:  Spherical lens vs Aspherical lens  Diam: 25mm  Focal Dist: 25mm  Data according to Edmund Optics (Very small spot size!)  Our spot Size limit is <100um

8.  Splitters and Circulators: ◦ It’s possible to use Splitters for our application, but they are not the optimal solution. Circulator Splitter

9.  Performance comparation between splitter options and circulator.