(20 points) A Ne-He laser light (2=623.8 nm in vacuum) linearly polarized with a horizonta transmission axis is sent through another linear polarizer with TA at 450 and then through a QWP (quarter-wave plate) with slow horizontal axis. (a) Use the Jones matrix method to find the polarization state of the output light. (b) If the QWP (90 or nt/2 phase) is made of crystal quartz film with its optical axis lying inside the surface, how thick the film has to be? The indices for quartz are no = 1.5443 and ne=1.5534