Upconversion and 1.5 µm - 1.6 µm infrared emission studies of Er3+ doped in the low phonon-energy hosts KPb2Cl5 and KPb2Br5 via 1.5 µm laser excitation

Althea Bluiett; Ei E. Brown; Craig Hanley; Uwe Hömmerich; Sudhir Trivedi

doi:10.1117/12.2003192

11 March 2013 Upconversion and 1.5 μm - 1.6 μm infrared emission studies of Er³⁺ doped in the low phonon-energy hosts KPb₂Cl₅ and KPb₂Br₅ via 1.5 μm laser excitation

Althea Bluiett, Ei E. Brown, Craig Hanley, Uwe Hömmerich, Sudhir Trivedi

Author Affiliations +

Proceedings Volume 8621, Optical Components and Materials X; 86211A (2013) https://doi.org/10.1117/12.2003192
Event: SPIE OPTO, 2013, San Francisco, California, United States

Abstract

In this study, cw and pulsed 1532 laser excitation of the ⁴I_13/2 band of Er³⁺ was explored in the low phonon-energy hosts KPb₂Cl₅and KPb₂Br₅. Crystal growth along with upconversion and eye-safe emission (~ 1550 nm) studies were conducted on both samplesunder 140 mW of cw laser excitation. Excitation spectra and emission decay transients of the infrared (⁴I_9/2 →⁴I_15/2) and green upconversion (²H_11/2 + ⁴S_3/2 →⁴I_15/2) revealed that energy transfer upconversion (ETU) is the origin of the infrared and the green upconversion under 1532 nm excitation. Spectral emission measurements indicate that the infrared upconversion is dominant relative to the green upconversion in both Er: KPb₂Cl₅and Er: KPb₂Br₅ crystals.

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Althea Bluiett, Ei E. Brown, Craig Hanley, Uwe Hömmerich, and Sudhir Trivedi "Upconversion and 1.5 μm - 1.6 μm infrared emission studies of Er³⁺ doped in the low phonon-energy hosts KPb₂Cl₅ and KPb₂Br₅ via 1.5 μm laser excitation", Proc. SPIE 8621, Optical Components and Materials X, 86211A (11 March 2013); https://doi.org/10.1117/12.2003192

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