High slope efficiency and high refractive index change in direct-written Yb-doped waveguide lasers with depressed claddings

Guido Palmer, Simon Gross, Alexander Fuerbach, David G. Lancaster, Michael J. Withford

Research output: Contribution to journalArticle

32 Citations (Scopus)
19 Downloads (Pure)

Abstract

We report the first Yb:ZBLAN and Yb:IOG10 waveguide lasers fabricated by the fs-laser direct-writing technique. Pulses from a Titanium- Sapphire laser oscillator with 5.1 MHz repetition rate were utilized to generate negative refractive index modifications in both glasses. Multiple modifications were aligned in a depressed cladding geometry to create a waveguide. For Yb:ZBLAN we demonstrate high laser slope efficiency of 84% with a maximum output power of 170 mW. By using Yb:IOG10 a laser performance of 25% slope efficiency and 72 mW output power was achieved and we measured a remarkably high refractive index change exceeding Δn = 2.3 × 10-2.

Original languageEnglish
Pages (from-to)17413-17420
Number of pages8
JournalOptics Express
Volume21
Issue number14
DOIs
Publication statusPublished - 15 Jul 2013

Bibliographical note

This paper was published in Optics Express and is made available as an electronic reprint with the permission of OSA. The paper can be found at the following URL on the OSA website: [http://www.opticsinfobase.org/oe/abstract.cfm?uri=oe-21-14-17413]. Systematic or multiple reproduction or distribution to multiple locations via electronic or other means is prohibited and is subject to penalties under law.

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