由宽带低损耗硅锗可饱和吸收体锁模的220飞秒铒镱玻璃激光器

220-fs erbium-ytterbium:glass laser mode locked by a broadband low-loss silicon/germanium saturable absorber.

作者信息

Grawert F J, Gopinath J T, Ilday F O, Shen H M, Ippen E P, Kärtner F X, Akiyama S, Liu J, Wada K, Kimerling L C

机构信息

Department of Electrical Engineering and Computer Science and Research Laboratory of Electronics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA.

出版信息

Opt Lett. 2005 Feb 1;30(3):329-31. doi: 10.1364/ol.30.000329.

DOI:10.1364/ol.30.000329

PMID:15751901

Abstract

We demonstrate femtosecond performance of an ultrabroadband high-index-contrast saturable Bragg reflector consisting of a silicon/silicon dioxide/germanium structure that is fully compatible with CMOS processing. This device offers a reflectivity bandwidth of over 700 nm and subpicosecond recovery time of the saturable loss. It is used to achieve mode locking of an Er-Yb:glass laser centered at 1540 nm, generating 220-fs pulses, with what is to our knowledge the broadest output spectrum to date.

摘要

我们展示了一种由硅/二氧化硅/锗结构组成的超宽带高折射率对比度可饱和布拉格反射镜的飞秒性能，该结构与CMOS工艺完全兼容。该器件提供超过700 nm的反射率带宽和可饱和损耗的亚皮秒恢复时间。它用于实现中心波长为1540 nm的铒镱玻璃激光器的锁模，产生220飞秒脉冲，据我们所知，这是迄今为止最宽的输出光谱。