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Quasi-three-level laser operation of Yb:YAG waveguides

Large, A.C., Hanna, D.C., Jones, J.K., Shepherd, D.P., Tropper, A.C., Chandler, P.J., Townsend, P.D., Zhang, L., Chartier, I., Ferrand, B. and Pelenc, D. (1993) Quasi-three-level laser operation of Yb:YAG waveguides At QE-11: 11th National Quantum Electronics Conference, United Kingdom. 30 Aug - 02 Sep 1993.

Record type: Conference or Workshop Item (Paper)


The main advantage of using waveguides in laser systems is that they produce high pump intensities over long interaction lengths for low input pump powers. This should lead to lower thresholds and more efficient lasers. Often though extra loss due to waveguide propagation reduces the benefits of this confinement. However in three-level and quasi-three-level laser systems there already exists absorption loss at the laser wavelength due to thermal population of the lower laser level. Any added waveguide propagation loss will therefore not have such a significant effect on laser performance. An example of such a laser system is Yb:YAG where 4% of the total population resides in the lower laser level. For a 6.5 at.% doped sample this is roughly equivalent to a propagation loss of 2.5db/cm which for the guides discussed here is the main contribution to the loss. The laser performance of Yb:YAG has been measured in planar waveguides made by two methods - ion-implantation and epitaxial growth.

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Published date: 1993
Venue - Dates: QE-11: 11th National Quantum Electronics Conference, United Kingdom, 1993-08-30 - 1993-09-02


Local EPrints ID: 77308
PURE UUID: 84ed031e-8ef4-4c9c-bdde-bf64c1da25c9
ORCID for D.P. Shepherd: ORCID iD

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Date deposited: 11 Mar 2010
Last modified: 18 Jul 2017 23:33

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Author: A.C. Large
Author: D.C. Hanna
Author: J.K. Jones
Author: D.P. Shepherd ORCID iD
Author: A.C. Tropper
Author: P.J. Chandler
Author: P.D. Townsend
Author: L. Zhang
Author: I. Chartier
Author: B. Ferrand
Author: D. Pelenc

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