Resonantly diode-pumped Ho^3+:Y_2O_3 ceramic 21 µm laser | Zendy

G. Alex Newburgh | Zendy; Akil Word-Daniels | Zendy; Arocksiamy Michael | Zendy; Larry D. Merkle | Zendy; Akio Ikesue | Zendy; Mark Dubinskii | Zendy

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Resonantly diode-pumped Ho^3+:Y_2O_3 ceramic 21 µm laser

Author(s) -

G. Alex Newburgh,

Akil Word-Daniels,

Arocksiamy Michael,

Larry D. Merkle,

Akio Ikesue,

Mark Dubinskii

Publication year - 2011

Publication title -

optics express

Language(s) - Uncategorized

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.19.003604

Subject(s) - optics , laser , materials science , slope efficiency , diode , laser diode , ceramic , excited state , absorption cross section , atomic physics , optoelectronics , fiber laser , physics , cross section (physics) , quantum mechanics , composite material

We report what is believed to be the first laser operation based on Ho3+-doped Y2O3. The Ho3+:Y2O3 ceramic was resonantly diode-pumped at ~1.93 µm to produce up to 2.5 W of continuous wave (CW) output power at ~2.12 µm. The laser had a slope efficiency of ~35% with respect to absorbed power and a beam propagation factor of M2 ~1.1. We have measured the absorption and stimulated emission cross sections of Ho3+:Y2O3 at 77 K and 300 K and present the calculated gain cross section spectrum at 77 K for different excited state inversion levels.

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