The influence of distributed rare earth dopant on the performance of waveguide lasers fabricated by the femtosecond laser direct-write technique

Yuwen Duan; Aaron McKay; Peter Dekker; M.J. Steel; Michael Withford

doi:10.1117/12.2002249

15 March 2013 The influence of distributed rare earth dopant on the performance of waveguide lasers fabricated by the femtosecond laser direct-write technique

Yuwen Duan, Aaron McKay, Peter Dekker, M.J. Steel, Michael Withford

Author Affiliations +

Proceedings Volume 8611, Frontiers in Ultrafast Optics: Biomedical, Scientific, and Industrial Applications XIII; 86110W (2013) https://doi.org/10.1117/12.2002249
Event: SPIE LASE, 2013, San Francisco, California, United States

Abstract

The development of an Yb-doped distributed Bragg reflector (DBR) waveguide laser fabricated in phosphate glass using the femtosecond laser direct-write technique is reported. The laser has the slope efficiency of 31% with the output power up to 81 mW at a pump power level of 378 mW. A theoretical model for the waveguide laser (WGL) is presented which gives emphasis to transverse integrals to investigate the energy distribution in a homogenously doped glass which is opposed to the fiber laser. The model was validated with experiments comparing a DBR WGL, and then used to study the influence of distributed rare earth dopants on the performance of such lasers. Approximately 15% of the pump power was absorbed by the doped “cladding” in the femtosecond laser inscribed Yb doped WGL case.

Citation Download Citation

Yuwen Duan, Aaron McKay, Peter Dekker, M.J. Steel, and Michael Withford "The influence of distributed rare earth dopant on the performance of waveguide lasers fabricated by the femtosecond laser direct-write technique", Proc. SPIE 8611, Frontiers in Ultrafast Optics: Biomedical, Scientific, and Industrial Applications XIII, 86110W (15 March 2013); https://doi.org/10.1117/12.2002249

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