基于一对熔接多模-单模光纤之间可扩展液芯的可调谐Tm/Ho共掺杂光纤激光器。

Tunable Tm/Ho-codoped fiber lasers based on an extensible liquid core between a pair of fused multimode-single-mode fibers.

作者信息

Sakata Hajime, Kosaka Fuma, Kubota Masanari, Kimbara Ryota, Okada Kengo

出版信息

Appl Opt. 2019 Jul 1;58(19):5288-5293. doi: 10.1364/AO.58.005288.

DOI:10.1364/AO.58.005288

Abstract

We present mechanically tunable Tm/Ho-codoped fiber lasers based on multimode interference in single mode-multimode-single-mode structures. The intermediate multimode fiber (MMF) is separated into two segments with a liquid core in between. The mode field diameter of the single-mode fiber is designed to 13 μm for the MMF having a core diameter of 105 μm. The tunable range is attained to 64 nm by extending the effective length of the MMF. The laser wavelength is tuned over the ranges of 1809-1866 nm and 1866-1930 nm for the initial MMF lengths of 35.3 and 34.5 mm, respectively.

摘要

我们展示了基于单模-多模-单模结构中的多模干涉的机械可调谐Tm/Ho共掺杂光纤激光器。中间的多模光纤（MMF）被分成两段，中间有一个液芯。对于芯径为105μm的MMF，单模光纤的模场直径设计为13μm。通过延长MMF的有效长度，可调谐范围达到64nm。对于初始MMF长度分别为35.3和34.5mm的情况，激光波长在1809 - 1866nm和1866 - 1930nm范围内调谐。