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9 March 2024 Mid-IR spectroscopic investigation of Dy3+ doped low-phonon chalcogenide glasses
Ei E. Brown, Zackery Fleischman, Jason McKay, Uwe Hommerich, Witold Palosz, Sudhir Trivedi, Mark Dubinskii
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Proceedings Volume PC12882, Optical Components and Materials XXI; PC128820D (2024) https://doi.org/10.1117/12.3002984
Event: SPIE OPTO, 2024, San Francisco, California, United States
Abstract
In this work, we present the results of our recent spectroscopic investigation on Dy3+-doped Ga2Ge5S13 (Dy:GGS) glass, aiming to explore its potential for mid-infrared (3-5 µm) laser applications. Under 910 nm excitation, the studied Dy:GGS glass displayed broad emission bands centered at ~2.9 µm and ~4.35 µm corresponding to 6H13/2 --> 6H15/2 and 6H11/2 --> 6H13/2, respectively. The measured fluorescence decay time of the 6H11/2 manifold (upper laser level for 4.35 µm laser transition) was found to be in the millisecond range, demonstrating similarity to other sulfide glasses doped with Dy3+. Spectroscopic results and data modeling including the temperature dependent emission and decay dynamics, concentration dependent studies, Judd-Ofelt analysis, and transition cross-sections, will be presented.
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Ei E. Brown, Zackery Fleischman, Jason McKay, Uwe Hommerich, Witold Palosz, Sudhir Trivedi, and Mark Dubinskii "Mid-IR spectroscopic investigation of Dy3+ doped low-phonon chalcogenide glasses", Proc. SPIE PC12882, Optical Components and Materials XXI, PC128820D (9 March 2024); https://doi.org/10.1117/12.3002984
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KEYWORDS
Mid-IR
Chalcogenide glass
Glasses
Spectroscopy
Ions
Laser applications
Phonons
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