Update of the relationship between the SHG crystal temperature and the green light power

Member: Matteo, Eleonora, Yuefan
Yesterday I uploaded three figures, the first one is the green light power as a function of resistance, since we can only get the resistance from the thermal controller. Today we took smaller step of resistance changing, got better shape of the curve,and finished the convert from the resistance to temperature. The final figure shows in the attachment. We still need to do some modification of the beam to get more symmetric result.