"Efficient generation of >2W of green light by single-pass frequency doubling in PPMgLN", MG Pullen, JJ Chapman, and D Kielpinski, Appl Opt 47, 1397 (2008)
Abstract: We report 32% efficient frequency doubling of single-frequency 1029nm light to green light at 514.5 nm using a single-pass configuration. A congruent composition, periodically poled magnesium-doped lithium niobate (PPMgLN) crystal of 50 mm length was used to generate a second-harmonic power of 2.3 W. To our knowledge, this is the highest reported power and efficiency achieved in the second-harmonic generation of single-frequency green light in a single-pass configuration.
