Efficient 1.9 μm emission in H-filled hollow core fiber by pure stimulated vibrational Raman scattering

Z. Wang, F. Yu, W.J. Wadsworth, J.C. Knight

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Abstract

We report here efficient 1.9 μm emission by pure stimulated vibrational Raman scattering in a hydrogen-filled anti-resonant hollow-core fiber pumped with a 1064 nm microchip laser. A maximum quantum conversion efficiency ∼48% was achieved by using a 6.5 m length of fiber filled with 23 bar hydrogen, with a maximum peak output power >2 kW. By properly designing the transmission bands of the fiber, selecting alternative pump sources and active gases, the emission wavelength could be extended into the mid-infrared. This provides a potential route for generating efficient, compact, broadly tunable, high power, and narrow linewidth mid-infrared fiber gas lasers with broad application in defense, environmental, and medical monitoring.

Original languageEnglish
Pages (from-to)105807
JournalLaser Physics Letters
Volume11
Issue number10
DOIs
Publication statusPublished - Oct 2014

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Raman scattering
hollow
Raman spectra
fibers
Fibers
Infrared radiation
Patient monitoring
Gas lasers
Hydrogen
environmental monitoring
gas lasers
hydrogen
Fiber lasers
Linewidth
Conversion efficiency
fiber lasers
routes
Pumps
pumps
Wavelength

Cite this

Efficient 1.9 μm emission in H-filled hollow core fiber by pure stimulated vibrational Raman scattering. / Wang, Z.; Yu, F.; Wadsworth, W.J.; Knight, J.C.

In: Laser Physics Letters, Vol. 11, No. 10, 10.2014, p. 105807.

Research output: Contribution to journalArticle

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