You need to build a alexandrite laser running at its 720 nm line in tem00 the laser has a resonator length of 0.804m and mirror radii of r7.341 m and r2- 3.347 m (a) is the cavity stable? (1 mark) (b) in order to use the laser in an optical system you need to locate the waist within the cavity and its spotsize. (3 marks) (c) you also must determine the spot size and divergence angle at the output for the laser. (3 marks)