Room temperature mid-infrared fiber lasing beyond 5 µm in chalcogenide glass small-core step index fiber

Nunes, JJ, Sojka, Ł, Crane, RW, Furniss, D, Tang, ZQ, Mabwa, D, Xiao, B, Benson, TM, Farries, M, Kalfagiannis, N ORCID: https://orcid.org/0000-0002-4030-5525, Barney, E, Phang, S, Seddon, AB and Sujecki, S, 2021. Room temperature mid-infrared fiber lasing beyond 5 µm in chalcogenide glass small-core step index fiber. Optics Letters, 46 (15), pp. 3504-3507. ISSN 0146-9592

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Abstract

This Letter, to the best of our knowledge, reports mid-infrared fiber lasing beyond 5 µm at room temperature for the first time, Ce3+-doped, chalcogenide glass, step index fiber employed in-band pumping with a 4.15 µm quantum cascade laser. The lasing fiber is was 64 mm long, with a calculated numerical aperture of 0.48 at the lasing wavelengths. The core glass was Ge15As21Ga1Se63 atomic % (at. %), doped with 500 parts-per-million-by-weight Ce, with a 9 µm core diameter. The cladding glass was Ge21Sb10Se69 at. % with a 190 µm outer diameter. As pump power increases continuous wave lasing corresponding to the 2F7/2→2F5/2, transition in the Ce3+ ion occurs at 5.14 µm, 5.17 µm, and 5.28 µm.

Item Type:	Journal article
Publication Title:	Optics Letters
Creators:	Nunes, J.J., Sojka, Ł., Crane, R.W., Furniss, D., Tang, Z.Q., Mabwa, D., Xiao, B., Benson, T.M., Farries, M., Kalfagiannis, N., Barney, E., Phang, S., Seddon, A.B. and Sujecki, S.
Publisher:	The Optical Society
Date:	1 August 2021
Volume:	46
Number:	15
ISSN:	0146-9592
Identifiers:	Number Type 10.1364/ol.430891 DOI 1455416 Other
Rights:	© 2021 Optical Society of America. Published by The Optical Society under the terms of the Creative Commons Attribution 4.0 License. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI.
Divisions:	Schools > School of Science and Technology
Record created by:	Linda Sullivan
Date Added:	06 Sep 2021 13:23
Last Modified:	06 Sep 2021 13:23
URI:	https://irep.ntu.ac.uk/id/eprint/44122

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