Towards all-fiber structure pulsed mid-infrared laser by gas-filled hollow-core fibers

• 来源期刊: 中国光学快报（英文版）
• 年，卷（期）: 2019,（9）
• 页码范围: 64-67
• 页数: 4页
• 语种: 英文
• DOI: 10.3788/COL201917.091402

摘要

We report here on a diode-pumped pulsed mid-infrared laser source based on gas-filled hollow-core fibers (HCFs) towards an all-fiber structure by the tapering method.The pump laser is coupled into an acetylene-filled HCF through a tapered single-mode fiber.By precisely tuning the wavelength of the diode to match different absorption lines of acetylene near 1.5 μm,mid-infrared emission around 3.1-3.2 μm is generated.With 2 m HCFs and 3 mbar acetylene gas,a maximum average power of 130 mW is obtained with a laser slope efficiency of ～24％.This work provides a potential scheme for all-fiber mid-infrared fiber gas lasers.