Dr. Thomas E. Wilson, professor of physics, presented a contributed paper at the Nonlinear Optics Meeting of the Optical Society of America, held July 15-19 at Waikoloa Beach, Hawai’i. His talk was given within the session Terahertz Emission and Propagation, and was titled “Evidence for a Terahertz Acoustic Phonon Phase-Conjugate Oscillator with Distributed Feedback.” Such an oscillator shares many of the characteristics of a Saser (sound amplification by the stimulated emission of radiation), but unlike the two other Sasers reported to date, produces no waste heat. He acknowledged generous support from an WV Science and Technology Opportunity (HEPC) Grant and a Quinlan award.