Patent # 5,371,752: “Optical parametric oscillation using KTA nonlinear crystals,” Inventors: P. E. Powers, W. S. Pelouch, C. L. Tang, and L. K. Cheng.
Patent # 5,579,152: "Tunable optical parametric oscillator," Inventors: R. J. Ellingson, P. E. Powers, L. K. Cheng, and C. L. Tang.
Patent # 5,377,043: “Ti:sapphire-pumped high-repetition rate femtosecond optical parametric oscillator,” Inventors: W. S. Pelouch, P. E. Powers, and C. L. Tang.
Patent # 5,383,198: “Self-starting mode-locked ring cavity laser,”
Inventors: W. S. Pelouch, P. E. Powers, and C. L. Tang.