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Type: Journal article
Title: Widely tunable short-infrared thulium and holmium doped fluorozirconate waveguide chip lasers
Author: Lancaster, D.
Gross, S.
Withford, M.
Monro, T.
Citation: Optics Express, 2014; 22(21):25286-25294
Publisher: Optical Society of American (OSA)
Issue Date: 2014
ISSN: 1094-4087
Statement of
D.G. Lancaster, S. Gross, M. J. Withford, and T. M. Monro
Abstract: We report widely tunable (≈ 260 nm) Tm(3+) and Ho(3+) doped fluorozirconate (ZBLAN) glass waveguide extended cavity lasers with close to diffraction limited beam quality (M(2) ≈ 1.3). The waveguides are based on ultrafast laser inscribed depressed claddings. A Ti:sapphire laser pumped Tm(3+)-doped chip laser continuously tunes from 1725 nm to 1975 nm, and a Tm(3+)-sensitized Tm(3+):Ho(3+) 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 Tm(3+)-doped chip laser which tunes from 1750 nm to 1998 nm at a 14% incident slope efficiency, and a beam quality of M(2) ≈ 1.2 for a large mode-area waveguide with 70 µm core diameter.
Keywords: Holmium
Spectrometry, Fluorescence
Infrared Rays
Time Factors
Lasers, Semiconductor
Optical Phenomena
Rights: © 2014 Optical Society of America
DOI: 10.1364/OE.22.025286
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