Fiber-feedback optical parametric oscillator for half-harmonic generation of sub-100-fs frequency combs around 2 μm.
Fiber-feedback optical parametric oscillator for half-harmonic generation of sub-100-fs frequency combs around 2 μm.
复制标题
光纤反馈光学参量振荡器，用于 2 μm 左右的亚 100-fs 频率梳的半谐波生成。
作者：
Kirk A. Ingold;A. Marandi;M. Digonnet;R. Byer
我们演示了一个飞秒光纤反馈光参量振荡器（OPO）在简并。OPO腔包括80 cm长的光纤，该光纤由正常色散部分和异常色散部分的组合组成，该正常色散部分和异常色散部分提供接近于零的净腔内群延迟色散。采用锁模掺Yb光纤激光器作为泵浦源，获得了中心波长为2090 nm、频率为250 MHz、能量为1.2 nJ的97 fs半谐波输出，总转换效率为36%。
We demonstrate a femtosecond fiber-feedback optical parametric oscillator (OPO) at degeneracy. The OPO cavity comprises an 80-cm-long fiber composed of a combination of normal and anomalous dispersion sections that provide a net intracavity group delay dispersion close to zero. By using a mode-locked, Yb-doped fiber laser as the pump, we achieved half-harmonic generation of 250-MHz, 1.2-nJ nearly transform-limited 97-fs pulses centered at 2090 nm with a total conversion efficiency of 36%.