Mid IR hollow core fiber gas laser emitting at 4.6 μm

被引：74

作者：

Aghbolagh, F. B. A. ^{[1
]}

Nampoothiri, V ^{[1
]}

Debord, B. ^{[2
]}

Gerome, F. ^{[2
]}

Vincetti, L. ^{[3
]}

Benabid, F. ^{[2
]}

Rudolph, W. ^{[1
]}

机构：

[1] Univ New Mexico, Dept Phys & Astron, Albuquerque, NM 87131 USA

[2] Univ Limoges, Xlim Res Inst, GPPMM Grp, UMR CNRS 7252, Limoges, France

[3] Univ Modena & Reggio Emilia, Dept Engn Enzo Ferrari, Reggio Emilia, Italy

来源：

OPTICS LETTERS | 2019年 / 44卷 / 02期

关键词：

NEGATIVE CURVATURE; OPTICAL-FIBER; TRANSMISSION; GUIDANCE; LIGHT;

D O I：

10.1364/OL.44.000383

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Emission at 4.6 mu m was observed from an N2O filled hollow core fiber laser. 8-ns pump pulses at 1.517 mu m excited a vibrational overtone resulting in lasing on an R and P branch fundamental transition from the upper pump state. At optimum gas pressure of 80 Torr, photon conversion efficiency of 9% and slope efficiency of 3% were observed from a mirrorless laser. The laser threshold occurred at absorbed pump energy of 150 nJ in a 45-cm long fiber with 85 mu m core diameter. The observed dependence of the laser output on gas pressure was shown to be a result of line broadening and relaxation rates. (C) 2019 Optical Society of America

引用

页码：383 / 386

页数：4

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