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

Research output: Chapter in Book/Report/Conference proceedingConference proceeding contribution

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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.

Original languageEnglish
Title of host publicationFrontiers in Ultrafast Optics: Biomedical, Scientific, and Industrial Applications XIII
EditorsAlexander Heisterkamp, Peter R. Herman, Michel Meunier, Stefan Nolte
Place of PublicationBellingham, WA
PublisherSPIE
Pages1-7
Number of pages7
Volume8611
ISBN (Print)9780819493804
DOIs
Publication statusPublished - 2013
EventFrontiers in Ultrafast Optics: Biomedical, Scientific, and Industrial Applications XIII - San Francisco, CA, United States
Duration: 3 Feb 20135 Feb 2013

Other

OtherFrontiers in Ultrafast Optics: Biomedical, Scientific, and Industrial Applications XIII
CountryUnited States
CitySan Francisco, CA
Period3/02/135/02/13

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