Efficient laser operation of Nd3+:Lu2O3at various wavelengths between 917 nm and 1463 nm
| Autor: | Alexander M. Heuer, L Fornasiero, G. Huber, P von Brunn, Christian Kränkel |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Materials science
business.industry Slope efficiency 02 engineering and technology Laser pumping 021001 nanoscience & nanotechnology Condensed Matter Physics Laser 01 natural sciences Industrial and Manufacturing Engineering Atomic and Molecular Physics and Optics law.invention 010309 optics Sesquioxide law Excited state 0103 physical sciences Sapphire Optoelectronics Stimulated emission 0210 nano-technology Absorption (electromagnetic radiation) business Instrumentation |
| Zdroj: | Laser Physics. 26:084003 |
| ISSN: | 1555-6611 1054-660X |
| DOI: | 10.1088/1054-660x/26/8/084003 |
| Popis: | Even though the first Nd3+-doped sesquioxide lasers have been realized more than 50 years ago, up to now no reports on efficient laser operation of Nd3+:doped sesquioxides can be found. In this work, we review the favorable spectroscopic properties of the sesquioxide Nd3+:Lu2O3 in terms of ground state absorption, stimulated emission, and excited state absorption cross sections as well as the upper level lifetime. Making use of these properties, we achieved efficient laser performance on eight different laser transitions in the wavelength range between 917 nm and 1463 nm under Ti:sapphire laser pumping using state-of-the-art HEM-grown Nd3+:Lu2O3 crystals with good optical quality. At the strongest transition around 1076 nm we determined a slope efficiency of 69%, which represents the highest efficiency ever obtained for a Nd3+-doped sesquioxide. Furthermore, we could generate watt level output powers and high slope efficiencies for seven other transitions. Lasers at 917 nm, 1053 nm, 1108 nm and 1463 nm were realized for the first time and the latter represents one of the longest laser wavelengths obtained on the 4F3/2 → 4I13/2 transition in Nd3+-doped materials. |
| Databáze: | OpenAIRE |
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