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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 41, Iss. 9 — Mar. 20, 2002
  • pp: 1698–1703

Sequence Lasing in a Gain-Switched Yb3+,Er3+-Doped Silica Double-Clad Fiber Laser

Stuart D. Jackson, Ben C. Dickinson, and Terence A. King  »View Author Affiliations


Applied Optics, Vol. 41, Issue 9, pp. 1698-1703 (2002)
http://dx.doi.org/10.1364/AO.41.001698


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Abstract

Experimental results relating to the gain-switched operation of a double-clad Yb<sup>3+</sup>,Er<sup>3+</sup>-doped silica fiber laser that is pulse pumped with the output from a flash-lamp-pumped Ti:sapphire laser are presented. For all the configurations of the fiber laser that we studied, the <sup>2</sup><i>F</i><sub>5/2</sub>→<sup>2</sup><i>F</i><sub>7/2</sub> laser transition of the Yb<sup>3+</sup> ion lased prior to laser emission from the <sup>4</sup><i>I</i><sub>13/2</sub>→<sup>4</sup><i>I</i><sub>15/2</sub> transition of the Er<sup>3+</sup> ion. To the best of our knowledge, this is the first reported operation of sequence lasing in the Yb<sup>3+</sup>,Er<sup>3+</sup>-codoped system. This succession of laser pulses deduced from the measurements of this investigation is a consequence of both the short intense pump pulse and the short 900-nm wavelength of the pump that does not overlap with any important excited-state absorption transitions. We believe that the predominant interionic interaction during the course of the pump pulse is the double-energy transfer to the Er<sup>3+</sup> ion acting twice from the <sup>2</sup><i>F</i><sub>5/2</sub> energy level of the Yb<sup>3+</sup> donor ion. A maximum total output of 1.65 mJ is obtained (1.38 mJ from the <sup>2</sup><i>F</i><sub>5/2</sub>→<sup>2</sup><i>F</i><sub>7/2</sub> transition of Yb<sup>3+</sup> and 0.27 mJ from the <sup>4</sup><i>I</i><sub>13/2</sub>→<sup>4</sup><i>I</i><sub>15/2</sub> transition of Er<sup>3+</sup>) from a nonoptimized configuration of the fiber laser. The wavelength of the output from the fiber laser was measured to vary approximately linearly with fiber length from 1040 to 1046 nm for the Yb<sup>3+</sup>-based laser and 1535 to 1541 nm for the Er<sup>3+</sup>-based laser.

© 2002 Optical Society of America

OCIS Codes
(140.3070) Lasers and laser optics : Infrared and far-infrared lasers
(140.3460) Lasers and laser optics : Lasers
(140.3510) Lasers and laser optics : Lasers, fiber
(140.3600) Lasers and laser optics : Lasers, tunable
(140.5560) Lasers and laser optics : Pumping

Citation
Stuart D. Jackson, Ben C. Dickinson, and Terence A. King, "Sequence Lasing in a Gain-Switched Yb3+,Er3+-Doped Silica Double-Clad Fiber Laser," Appl. Opt. 41, 1698-1703 (2002)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-41-9-1698

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