Abstract

Self-frequency doubling (SFD) nonlinear crystals have been recently studied for the generation of green light in optically pumped miniature systems.¹ In the case of end pumping, the system involves three-wave coupling of the pump, the fundamental, and the second harmonics. For the conventional intracavity doubling, the nonlinear loss due to the doubling has been treated as an effective outcoupling of the fundamental. In the present system of SFD, however, beam propagations are coupled within the same crystal which should be treated simultaneously.

© 1989 Optical Society of America