Thermal and laser properties of Nd:Lu₃Sc₁.₅Ga₃.₅O₁₂ for high power dual-wavelength laser

Thermal and laser properties of Nd:Lu₃Sc₁.₅Ga₃.₅O₁₂ for high power dual-wavelength laser

We measured the thermal properties of Nd:Lu₃Sc₁.₅Ga₃.₅O₁₂ (Nd:LuSGG) crystal, including the thermal expansion coefficient, specific heat, and thermal diffusion coefficient. The calculated thermal conductivity is 4.4 W/mK at room temperature. A high-power continuous-wave and passively Q-switched Nd:L...

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Veröffentlicht in:Optics express 2012-03, Vol.20 (7), p.6944-6951
Hauptverfasser: Wu, K, Hao, L Z, Yu, H H, Wang, Z P, Wang, J Y, Zhang, H J
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Sprache:eng
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Computer Simulation
Computer-Aided Design
Equipment Design
Equipment Failure Analysis
Lasers
Light
Models, Theoretical
Scattering, Radiation
Temperature
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container_issue 7
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creator Wu, K
Hao, L Z
Yu, H H
Wang, Z P
Wang, J Y
Zhang, H J
description We measured the thermal properties of Nd:Lu₃Sc₁.₅Ga₃.₅O₁₂ (Nd:LuSGG) crystal, including the thermal expansion coefficient, specific heat, and thermal diffusion coefficient. The calculated thermal conductivity is 4.4 W/mK at room temperature. A high-power continuous-wave and passively Q-switched Nd:LuSGG laser was also demonstrated. Continuous-wave output power of 6.96 W is obtained which is the highest power with this material. For the first time to our knowledge, the passively Q-switched Nd:LuSGG laser is reported with the shortest pulse width, largest pulse energy, and highest peak power are achieved to be 5.1 ns, 62.5 μJ, and 12 kW, respectively. By spectral analysis, it has been found that the Nd:LuSGG laser was located at 1059 nm under low pump power, and became dual-wavelength at 1061.5 and 1059 nm when the incident pump power is over 2.27 W. The generating mechanism of dual-wavelength laser is also discussed.
doi_str_mv 10.1364/OE.20.006944
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source MEDLINE; DOAJ Directory of Open Access Journals; EZB-FREE-00999 freely available EZB journals; Alma/SFX Local Collection
subjects Computer Simulation
Computer-Aided Design
Equipment Design
Equipment Failure Analysis
Lasers
Light
Models, Theoretical
Scattering, Radiation
Temperature
title Thermal and laser properties of Nd:Lu₃Sc₁.₅Ga₃.₅O₁₂ for high power dual-wavelength laser
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