Participaint: Aritomi and Yuhang

According to the design, we implement the telescope which is very close to OPO. However, I found I can improve the mode matching by moving the first lens close to OPO. However, after movement of 1cm closer, I cannot go on because of the limitation of space. Then I did the simulation by Jammt, it proves that the waist position should be farther away the first lens.

So I did simulation again(with waist position 1.5cm back) and also leave more space for the lens to be moved. We will implement this design tomorrow.