The Study of the Interaction of Intense Picosecond Light Pulse with Materials
Quarterly technical rept. 22 Mar-21 Jun 1973
MARYLAND UNIV COLLEGE PARK DEPT OF ELECTRICAL ENGINEERING
Pagination or Media Count:
The intensity of the second harmonic light in total reflection and in transmission from uniaxial KDP crystals immersed in an optically denser liquid l-bromonaphthalene have been measured as a function of angle of incidence of the fundamental beam from a mode locked Ndglass laser. The results agreed well with the theoretical predictions of theory given by Bloembergen and Pershan. In particular, the existence of a Nonlinear Brewsters angle of a transparent medium KDP, with nonlinear polarization in the plane of reflection, has been first demonstrated. The transmitted second harmonic intensity under noncollinear phase matched condition by means of two beam spatial mixing TBSM in the KDP crystal, using Q-switched Ndglass laser pulses, was observed as a function of the angle of incidence. The result was in good agreement with the theory of Bloembergen and Pershan. As a consequence, this result was used to measure the second order intensity auto-correlation function of Ndglass laser radiation.