In the mid-sixties, when the laser was a new exotic devise it was believed to be oy many no more than a powerful light bulb, many of the most spectacular scientific experiments were performed. From optics to non-linear phenomena, quantum electronics to molecular spectroscopy saw an incredible growth. Phenomena which were only postulated theoretically such as two photon processes and optical harmonic generation became common experimental events in laser laboratories. Lasers made stimulated light processes rather easy to demonstrate and provide a means for their in depth studies. A new lasing medium. was discovered practically every day, and new effects" were exposed in each physics journal issue.© (1987) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.