Schlup P, McKinnie I T, Butterworth S D
Department of Physics, University of Otago, PO Box 56, Dunedin, New Zealand.
Appl Opt. 1999 Dec 20;38(36):7398-401. doi: 10.1364/ao.38.007398.
We report single longitudinal mode operation of a pulsed Nd:YAG pumped periodically poled lithium niobate optical parametric oscillator (OPO). The combination of a prism and an etalon provides both coarse and fine spectral resolution, thereby eliminating parasitic resonant oscillation of cascaded signal wavelengths, idler wavelengths, and adjacent longitudinal modes of the signal field. Optical bandwidths of less than 300 MHz have been obtained at signal wavelengths between 1.47 and 1.59 mum. In comparison with broadband operation, the single-mode OPO shows only a 9% reduction in pump depletion with a negligible reduction in extraction efficiency.
我们报道了一种由脉冲Nd:YAG泵浦的周期性极化铌酸锂光学参量振荡器（OPO）的单纵模运转。棱镜和标准具的组合提供了粗光谱分辨率和精细光谱分辨率，从而消除了级联信号波长、闲频波长以及信号场相邻纵模的寄生共振振荡。在1.47至1.59微米的信号波长处获得了小于300兆赫兹的光学带宽。与宽带运转相比，单模OPO的泵浦损耗仅降低了9%，而提取效率的降低可忽略不计。
