Quasi-phase-matched self-pumped optical parametric oscillation in a micro-resonator.
Quasi-phase-matched self-pumped optical parametric oscillation in a micro-resonator.
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DOI：
10.1364/oe.26.010813
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发表时间：
2018-04
期刊：
影响因子：
3.8
通讯作者：
Simon J. Herr;C. Werner;K. Buse;I. Breunig
中科院分区：
文献类型：
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作者：
Simon J. Herr;C. Werner;K. Buse;I. Breunig
在掺钕钛酸锂材料制成的高Q回音壁模式微腔中实现了激光和自泵浦光参量振荡（self-OPO）。在1.08 μm波长处提供5 mW输出功率的激光工艺足以在相同的高Q腔中泵浦自OPO工艺。在6 mW激光输出功率下，信号和空闲输出功率之和超过1.2mW。产生的光的波长范围为1.5至3.8 μm。相位匹配由径向准相位匹配结构提供，该径向准相位匹配结构由电流控制的书法极化技术产生。据我们所知，这是第一次演示了准相位匹配自泵浦非线性光学过程中的微谐振器，以及第一个自光学参量振荡器在微谐振器。该概念具有低成本的高度集成和波长可调的相干光源的潜力。
Lasing and self-pumped optical parametric oscillation (self-OPO) are achieved in a high-Q whispering-gallery-mode micro-resonator, made of neodymium-doped lithium niobate. A laser process providing 5 mW output power at 1.08 μm wavelength is sufficient to pump a self-OPO process within the same high-Q cavity. At 6 mW lasing output power, the sum of signal and idler output powers exceeds 1.2 mW. The wavelength of the generated light ranges from 1.5 to 3.8 μm. Phase matching is provided by a radial quasi-phase-matching structure, which is generated by a current-controlled calligraphic poling technique. To the best of our knowledge, this is the first demonstration of a quasi-phase-matched self-pumped nonlinear optical process in a micro-resonator, as well as the first self-OPO in a micro-resonator. The concept bears the potential for a highly integrated and wavelength-tunable coherent light source at low cost.