Vernay Augustin, Boutou Véronique, Félix Corinne, Jegouso David, Bassignot Florent, Chauvet Mathieu, Boulanger Benoit
Opt Express. 2021 Jul 5;29(14):22266-22274. doi: 10.1364/OE.432636.
Birefringence phase-matched third-harmonic generation at 1594 nm is performed for the first time in a KTiOPO single crystal micrometric ridge waveguide. The energy conversion efficiency reaches 3.4% for a pump energy as low as 2 µJ over a pulse duration of 15 ps at a repetition rate of 10 Hz. Strong agreements between theory and experiments for both phase-matching and conversion efficiency is obtained, which let us envision future triple photon generation quantum experiments.
在磷酸钛氧钾（KTiOPO）单晶微米级脊形波导中首次实现了1594纳米处的双折射相位匹配三次谐波产生。在10赫兹的重复频率下，对于15皮秒脉冲持续时间内低至2微焦的泵浦能量，能量转换效率达到3.4%。在相位匹配和转换效率方面，理论与实验取得了高度一致，这使我们能够设想未来的三光子产生量子实验。
