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D R Hall - One of the best experts on this subject based on the ideXlab platform.
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high average power nd yag planar waveguide Laser that is face pumped by 10 Laser diode bars
Optics Letters, 2002Co-Authors: H J Baker, G J Friel, G J Hilton, D R HallAbstract:A planar waveguide Nd:YAG Laser is pumped with 430 W of power from 10 Laser diode bars to produce a multimode output power of 150 W at an optical efficiency of 35%. Use of a hybrid resonator of the positive-branch confocal unstable type for the lateral axis and of one of the near–case I waveguide type for the transverse axis increased the Laser Brightness by a factor of ∼26 with only 12% less power than in the multimode case.
H J Baker - One of the best experts on this subject based on the ideXlab platform.
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high average power nd yag planar waveguide Laser that is face pumped by 10 Laser diode bars
Optics Letters, 2002Co-Authors: H J Baker, G J Friel, G J Hilton, D R HallAbstract:A planar waveguide Nd:YAG Laser is pumped with 430 W of power from 10 Laser diode bars to produce a multimode output power of 150 W at an optical efficiency of 35%. Use of a hybrid resonator of the positive-branch confocal unstable type for the lateral axis and of one of the near–case I waveguide type for the transverse axis increased the Laser Brightness by a factor of ∼26 with only 12% less power than in the multimode case.
G J Friel - One of the best experts on this subject based on the ideXlab platform.
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high average power nd yag planar waveguide Laser that is face pumped by 10 Laser diode bars
Optics Letters, 2002Co-Authors: H J Baker, G J Friel, G J Hilton, D R HallAbstract:A planar waveguide Nd:YAG Laser is pumped with 430 W of power from 10 Laser diode bars to produce a multimode output power of 150 W at an optical efficiency of 35%. Use of a hybrid resonator of the positive-branch confocal unstable type for the lateral axis and of one of the near–case I waveguide type for the transverse axis increased the Laser Brightness by a factor of ∼26 with only 12% less power than in the multimode case.
G J Hilton - One of the best experts on this subject based on the ideXlab platform.
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high average power nd yag planar waveguide Laser that is face pumped by 10 Laser diode bars
Optics Letters, 2002Co-Authors: H J Baker, G J Friel, G J Hilton, D R HallAbstract:A planar waveguide Nd:YAG Laser is pumped with 430 W of power from 10 Laser diode bars to produce a multimode output power of 150 W at an optical efficiency of 35%. Use of a hybrid resonator of the positive-branch confocal unstable type for the lateral axis and of one of the near–case I waveguide type for the transverse axis increased the Laser Brightness by a factor of ∼26 with only 12% less power than in the multimode case.
Cini Luigi - One of the best experts on this subject based on the ideXlab platform.
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Thermal lensing in solid-state Lasers: A novel analytical expression and its experimental investigation
'Pisa University Press', 2020Co-Authors: Cini LuigiAbstract:The end-pumped solid-state Laser is a mature design architecture exploited for many scientific, industrial and medical Laser applications, in the tens-of-watts power regime. Cost effective, compact, and relatively efficient, in recent decades their performance has capitalized on improving diode Laser Brightness and power. Further power-scaling however, is fundamentally limited by the thermo-optical properties of the gain medium and the induced optical distortions, primarily driven by the quantum defect between pump and the emission wavelengths. The basic design strategy for these Lasers has been to try to mitigate the effects of the induced thermal lensing and aberrations, which are both theoretically and experimentally investigated in this work. In the first part, we use the Kirchhoff transform to convert the non-linear heat equation into a solvable linear equation for a cylindrical radially isotropic gain element, considering its thermal conductivity as temperature-dependent. Analytical solutions for the temperature distribution along the length of a side- cooled end-pumped rod are presented for different pump distributions that can be used for practical configurations, such as near-diffraction-limited, to fibre- coupled diode-Laser, pumps. Furthermore, this result provides novel analytical expressions for the thermal-lens strength associated with the pump-induced accumulated optical phase shift, which converge to well-known equations when a temperature-independent thermal conductivity is chosen. In the second part it is shown how to experimentally investigate the thermal lens and aberrations in a diode-pumped Nd:YAG crystal, by means of a He-Ne Laser. The experimental setup used and preliminary results obtained are discussed
