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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 language | English |
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Pages (from-to) | 105807 |
Journal | Laser Physics Letters |
Volume | 11 |
Issue number | 10 |
DOIs | |
Publication status | Published - Oct 2014 |
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Dive into the research topics of 'Efficient 1.9 μm emission in H-filled hollow core fiber by pure stimulated vibrational Raman scattering'. Together they form a unique fingerprint.Projects
- 1 Finished
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New Fibres for New Lasers
Knight, J. (PI), Birks, T. (CoI) & Wadsworth, W. (CoI)
Engineering and Physical Sciences Research Council
1/10/11 → 31/03/15
Project: Research council