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Optics Letters

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  • Editor: Alan E. Willner
  • Vol. 34, Iss. 20 — Oct. 15, 2009
  • pp: 3062–3064

Liquid-cooled 24 W mid-infrared Er:ZBLAN fiber laser

Shigeki Tokita, Masanao Murakami, Seiji Shimizu, Masaki Hashida, and Shuji Sakabe  »View Author Affiliations


Optics Letters, Vol. 34, Issue 20, pp. 3062-3064 (2009)
http://dx.doi.org/10.1364/OL.34.003062


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Abstract

A 24 W liquid-cooled CW 3 μ m fiber laser with a multimode-core Er-doped ZBLAN fiber has been developed. The output power of 24 W and an optical-to-optical efficiency of 14.5% (with respect to incident pump power) were obtained with 975 nm diode pumping. Efficient cooling was implemented by a combination of fluid cooling over the entire length of the fiber and conductive cooling at both end faces of the fiber. Consequently, stable high-power operation was demonstrated. To our knowledge, this is the highest output power obtained by a 3 μ m fiber laser. Furthermore, the high power can be further scaled up, since the output power in the present work is limited only by the available pump power.

© 2009 Optical Society of America

OCIS Codes
(140.3070) Lasers and laser optics : Infrared and far-infrared lasers
(140.3480) Lasers and laser optics : Lasers, diode-pumped
(140.3500) Lasers and laser optics : Lasers, erbium
(140.3510) Lasers and laser optics : Lasers, fiber
(140.6810) Lasers and laser optics : Thermal effects

ToC Category:
Lasers and Laser Optics

History
Original Manuscript: July 8, 2009
Revised Manuscript: September 8, 2009
Manuscript Accepted: September 8, 2009
Published: October 5, 2009

Citation
Shigeki Tokita, Masanao Murakami, Seiji Shimizu, Masaki Hashida, and Shuji Sakabe, "Liquid-cooled 24 W mid-infrared Er:ZBLAN fiber laser," Opt. Lett. 34, 3062-3064 (2009)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-34-20-3062


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