Pseudo-type-II tuning behavior and mode identification in whispering gallery optical parametric oscillators.
Pseudo-type-II tuning behavior and mode identification in whispering gallery optical parametric oscillators.
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DOI：
10.1364/oe.24.015137
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发表时间：
2016-06
期刊：
影响因子：
3.8
通讯作者：
S. Meisenheimer;J. Fürst;A. Schiller;F. Holderied;K. Buse;I. Breunig
中科院分区：
文献类型：
--
作者：
S. Meisenheimer;J. Fürst;A. Schiller;F. Holderied;K. Buse;I. Breunig
传统的基于反射镜的光学参量振荡器（OPO）的波长调谐表现出抛物线形状的调谐曲线（0型和I型相位匹配）或以有限斜率彼此交叉的调谐分支（II型相位匹配）。我们预测和实验证明，回音壁OPO的基础上0型相位匹配显示两个调谐行为，这取决于所产生的波的模式数是否一致或不同。本文研究了毫米级径向极化锂晶体盘在1 μm波长泵浦下的光参量振荡波长调谐，产生了1.7 ~ 2.6 μm波长的信号波和闲频波。我们的实验结果与理论预测非常吻合。所研究的回音壁光学参量振荡器结合了材料的最高非线性光学系数的使用与受控的II型波长调谐和自相位锁定的可能性。
Wavelength tuning of conventional mirror-based optical parametric oscillators (OPOs) exhibits parabolically-shaped tuning curves (type-0 and type-I phase matching) or tuning branches that cross each other with a finite slope (type-II phase matching). We predict and experimentally prove that whispering gallery OPOs based on type-0 phase matching show both tuning behaviors, depending on whether the mode numbers of the generated waves coincide or differ. We investigate the wavelength tuning of optical parametric oscillation in a millimeter-sized radially-poled lithium niobate disk pumped at 1 μm wavelength generating signal and idler waves between 1.7 and 2.6 μm wavelength. Our experimental findings excellently coincide with the theoretical predictions. The investigated whispering gallery optical parametric oscillator combines the employment of the highest nonlinear-optical coefficient of the material with a controlled type-II-like wavelength tuning and with the possibility of self-phase locking.