Widely tunable short-infrared thulium and holmium doped fluorozirconate waveguide chip lasers

D. G. Lancaster*, S. Gross, M. J. Withford, T. M. Monro

*Corresponding author for this work

Research output: Contribution to journalArticle

8 Citations (Scopus)
13 Downloads (Pure)

Abstract

We report widely tunable (∼260 nm) Tm3+ and Ho3+ doped fluorozirconate (ZBLAN) glass waveguide extended cavity lasers with close to diffraction limited beam quality (M2∼1.3). The waveguides are based on ultrafast laser inscribed depressed claddings. A Ti:sapphire laser pumped Tm3+-doped chip laser continuously tunes from 1725 nm to 1975 nm, and a Tm3+-sensitized Tm3+:Ho3+ chip laser displays tuning across both ions evidenced by a red enhanced tuning range of 1810 to 2053 nm. We also demonstrate a compact 790 nm diode laser pumped Tm3+-doped chip laser which tunes from 1750 nm to 1998 nm at a 14% incident slope efficiency, and a beam quality of M2∼1.2 for a large mode-area waveguide with 70 μm core diameter.

Original languageEnglish
Pages (from-to)25286-25294
Number of pages9
JournalOptics Express
Volume22
Issue number21
DOIs
Publication statusPublished - 20 Oct 2014

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-22-21-25286. 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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