Towards all-fiber structure pulsed mid-infrared laser by gas-filled hollow-core fibers
We report here a diode-pumped pulsed mid-infrared laser source based on gas-filled hollow-core fibers (HCFs) towards all-fiber structure by 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.
huang wei,cui yulong,Zhou Zhiyue,Li zhixian,Chen Yubin,Wang Zefeng. Towards all-fiber structure pulsed mid-infrared laser by gas-filled hollow-core fibers[J].Chinese Optics Letters,2019,17(9):09.