利用腔内石墨烯电光调制器将带宽稳定在增益寿命极限之外的频率梳。

Frequency comb stabilization with bandwidth beyond the limit of gain lifetime by an intracavity graphene electro-optic modulator.

机构信息

Department of Physics, University of Colorado at Boulder, Boulder, Colorado 80309-0390, USA.

出版信息

Opt Lett. 2012 Aug 1;37(15):3084-6. doi: 10.1364/OL.37.003084.

DOI:10.1364/OL.37.003084

Abstract

Intracavity loss modulation enables offset-frequency control with bandwidths beyond what is possible by pump power modulation. To demonstrate this new method, we use a subwavelength thick graphene electro-optic modulator to stabilize the offset frequency in a Tm:fiber frequency comb at 1.95 μm wavelength. Record-low residual phase noise of 144 mrads was achieved with this new locking scheme.

摘要

腔内损耗调制使得能够进行偏移频率控制，其带宽超出了通过泵浦功率调制所能实现的带宽。为了展示这种新方法，我们使用亚波长厚的石墨烯电光调制器在 1.95μm 波长的 Tm：光纤梳状激光器中稳定偏移频率。通过这种新的锁定方案，实现了创纪录的低残余相位噪声 144mrads。