用于在2μm附近产生亚100飞秒频率梳的半谐波产生的光纤反馈光学参量振荡器。

Fiber-feedback optical parametric oscillator for half-harmonic generation of sub-100-fs frequency combs around 2 μm.

作者信息

Ingold Kirk A, Marandi Alireza, Digonnet Michel J F, Byer Robert L

出版信息

Opt Lett. 2015 Sep 15;40(18):4368-71. doi: 10.1364/OL.40.004368.

DOI:10.1364/OL.40.004368

PMID:26371938

Abstract

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%.

摘要

我们展示了一种简并的飞秒光纤反馈光学参量振荡器（OPO）。该OPO腔由一根80厘米长的光纤组成，该光纤由正常色散和反常色散部分组合而成，提供接近零的腔内净群延迟色散。通过使用锁模掺镱光纤激光器作为泵浦源，我们实现了中心波长为2090纳米、频率为250兆赫兹、能量为1.2纳焦、脉宽为97飞秒且接近变换极限的脉冲的半谐波产生，总转换效率为36%。