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Mid IR hollow core fiber gas laser emitting at 4.6 um
- Publication Year :
- 2018
-
Abstract
- Emission at 4.6 um was observed from an N2O filled hollow core fiber laser. 8-ns pump pulses at 1.517 um 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 a photon conversion efficiency of 9% and a slope efficiency of 3% was observed from a mirrorless laser. The laser threshold occurred at an 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 is shown to be a result of line broadening and relaxation rates.
- Subjects :
- Physics - Optics
Subjects
Details
- Database :
- arXiv
- Publication Type :
- Report
- Accession number :
- edsarx.1811.01140
- Document Type :
- Working Paper
- Full Text :
- https://doi.org/10.1364/OL.44.000383