Fabrication of depressed cladding waveguide Bragg-gratings in rare-earth doped heavy-metal fluoride glass

S. Gross*, D. G. Lancaster, H. Ebendorff-Heidepriem, K. Kuan, T. M. Monro, M. J. Withford, A. Fuerbach

*Corresponding author for this work

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

Abstract

Heavy-metal fluoride glass is well known for its high infrared transparency, especially in its most common composition ZrF4-BaF 2-LaF3-AlF3-NaF (ZBLAN), which makes it an attractive host for mid-infrared emitting rare-earth ions. The mid-infrared wavelength region is of particular interest for many applications like molecular spectroscopy, process monitoring and infrared countermeasures, which demand a robust, simple and cheap laser source. We recently demonstrated a Tm 3+:ZBLAN waveguide laser emitting at 1.9 m with a slope efficiency approaching 40% [1]. The device is based on novel laser-written depressed cladding waveguides with butt-coupled bulk mirrors. However to obtain a highly integrated and robust laser system a different approach to providing the resonator feedback must be applied. A significant innovation would be the integration of Bragg-gratings into the waveguide in the form of distributed feedback (DFB) or distributed Bragg reflector (DBR) structures, thereby resulting in a monolithic device with narrow line width output [2].

Original languageEnglish
Title of host publication2011 Conference on Lasers and Electro-Optics Europe and 12th European Quantum Electronics Conference (CLEO EUROPE/EQEC)
Place of PublicationMunich
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
Pages1-1
Number of pages1
ISBN (Electronic)9781457705328
ISBN (Print)9781457705335
DOIs
Publication statusPublished - 2011
Event2011 Conference on Lasers and Electro-Optics Europe and 12th European Quantum Electronics Conference, CLEO EUROPE/EQEC 2011 - Munich, Germany
Duration: 22 May 201126 May 2011

Other

Other2011 Conference on Lasers and Electro-Optics Europe and 12th European Quantum Electronics Conference, CLEO EUROPE/EQEC 2011
CountryGermany
CityMunich
Period22/05/1126/05/11

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