Radojevic A M, Levy M, Osgood R M, Jundt D H, Kumar A, Bakhru H
Opt Lett. 2000 Jul 15;25(14):1034-6. doi: 10.1364/ol.25.001034.
We report on the fabrication and chic((2)) measurements of thin ~10-mum -thick films of periodically poled LiNbO(3), obtained by crystal ion slicing. The d(33) optical coefficient in the films is probed by sum-frequency generation with a short-pulse laser source at 1550 nm and compared with that of the bulk. Efficient, room-temperature TM(omega, m = 0)-to-TM(omega +omega, m = 0) mode conversion is obtained in the films. These measurements show that domain periodicity is preserved during ion implantation and that the thin films have bulklike nonlinearity and material dispersion.
我们报道了通过晶体离子切片获得的周期性极化铌酸锂（LiNbO₃）约10微米厚薄膜的制备及相关测量。利用1550纳米的短脉冲激光源通过和频产生来探测薄膜中的d(33)光学系数，并与块状材料的进行比较。在薄膜中实现了高效的室温下TM(ω, m = 0)到TM(ω + ω, m = 0)模式转换。这些测量表明在离子注入过程中畴周期性得以保留，并且薄膜具有类似块状材料的非线性和材料色散。
