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首页> 外文会议>Nonlinear Materials, Devices, and Applications >All-optical frequency-by-three division with a diode-laser-pumped cw OPO using PPLN
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All-optical frequency-by-three division with a diode-laser-pumped cw OPO using PPLN

机译：使用PPLN的二极管激光泵浦CW OPO进行全光三分频

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Abstract: We report on the first realization of an all-optical frequency-by-three divider. The frequency to be divided is generated by a single-frequency diode master-oscillator power-amplifier (MOPA) system emitting at a wavelength of 812 nm. By-three-division is achieved with a continuous-wave (CW) optical parametric oscillator (OPO) based on a periodically pulsed LiNbO$-3$/ crystal, which carries tow sections with different poling periods. The first section provides quasi-phase matching (QPM) for parametric oscillation at 1218 nm and 2436 nm such that the idler frequency is approximately one-third of the pump frequency. The other section provides QPM for second harmonic generation (SHG) of the idler frequency which gives an additional field at a wavelength of 1218 nm. By fine tuning the OPO output wavelengths, the frequency difference between the signal and the idler-SHG is brought close to zero. This results in a mutual injection-locking of the idler and signal waves, giving phase-coherent oscillator of both waves with the pump at a frequency ratio of exactly 1 to 2 to 3. The measured locking-range of 0.5 to 1 MHz shows good agreement with the theoretical value of 0.8 MHz obtained form numerically solving the coupled wave equations for the OPO with resonator internal idler-SHG. !13
机译：摘要：我们报告了全光分频三分频器的首次实现。要分频的频率由单频二极管主振荡器功率放大器（MOPA）系统产生，该系统以812 nm的波长发射。通过基于周期性脉冲的LiNbO $ -3 $ /晶体的连续波（CW）光学参量振荡器（OPO）可以实现三级划分，该晶体带有不同极化周期的丝束部分。第一部分为1218 nm和2436 nm处的参数振荡提供准相位匹配（QPM），以使惰轮频率约为泵浦频率的三分之一。另一部分提供了用于惰轮频率的二次谐波（SHG）的QPM，它在1218 nm波长处提供了一个附加场。通过微调OPO输出波长，信号与惰轮-SHG之间的频率差接近于零。这导致惰轮波和信号波相互注入锁定，从而使两个波的相位相干振荡器与泵以正好为1至2至3的频率比。测得的0.5至1 MHz的锁定范围显示出良好的通过数值求解带谐振器内部惰轮-SHG的OPO的耦合波方程，获得与0.8 MHz理论值的一致性。 ！13

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