We report on what is to our knowledge the first realization of a quasi-phase-matched optical parametric oscillator (OPO) based on a crystal with a cylindrical shape. The main reason for interest in this device is its broad, continuous tuning. In experiments with a 1064-nm pump, the signal tuning range was equal to 525 nm (1515–2040 nm), and the corresponding idler was continuously tuned over 1340 nm (2220–3560 nm). The angular tuning was 26°, with only a minor variation of the OPO threshold over the entire tuning range.
© 2001 Optical Society of America
Jean-Philippe Fève, Olivier Pacaud, Benoît Boulanger, Bertrand Ménaert, Jonas Hellström, Valdas Pasiskevicius, and Fredrik Laurell, "Widely and continuously tunable optical parametric oscillator based on a cylindrical periodically poled KTiOPO4 crystal," Opt. Lett. 26, 1882-1884 (2001)