Question

4" (20%) A laser beam at the wavelength of 632 nmis propagating in the uniaxial crystal lithium niobate with the refractive indices no=2.287 and», = 2.202. The wave normal is in the x-z plane and is 30° away from the optic axis. 1) Pleas its semi-axes. 2) Please find the refractive indices of the o-wave and the e-wave. 3) Please briefly describe the vibration direction of the D vectors of the o-wave and the e-wave. e roughly draw the index ellipsoid, showing the wave normal, the intersection ellipse and

Answer 1

ven of Lajer beam wavelength 氐 the o-Yay YeH0chve index ds independent 、 of the fast axial ouentahon 야 oupta) so axis oientasn and us vaue n(9) no 12 (2-) 0-1948 In(0):2-a 65 n(o