Journal
LASER PHYSICS LETTERS
Volume 11, Issue 10, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/1612-2011/11/10/105807
Keywords
photonic crystal fibers; fiber lasers; gas lasers; stimulated Raman scattering
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Funding
- UK Engineering and Physical Sciences Research Council [EP/I011315/1]
- International Science & Technology Cooperation of China [2012DFG11470]
- National Natural Science Foundation of China [11274385]
- Engineering and Physical Sciences Research Council [EP/I011315/1] Funding Source: researchfish
- EPSRC [EP/I011315/1] Funding Source: UKRI
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We report here efficient 1.9 mu m 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 similar to 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.
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