Thermal distribution calculation in diode pumped Nd:YAG laser rod by boundary element method

Sovizi, Mahdi; Massudi, Reza

doi:10.1016/j.optlastec.2005.05.010

Cited by 23 publications

(16 citation statements)

References 5 publications

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“…where T is the temperature, S(r, z, t) stands for the heat source term and K c and C p are the thermal conductivity and the heat capacity, respectively. This equation was solved numerically by many groups, using commercial or in-house computational codes [17,[22][23][24][25][26][27] . Isotropic and anisotropic crystals were considered in different pumping schemes and boundary conditions.…”

Section: Theoretical Model and Simulationsmentioning

confidence: 99%

Thermal lens analysis in a diode-pumped 10 Hz 100 mJ Yb:YAG amplifier

Hariton

João

Pires

et al. 2020

High Pow Laser Sci Eng

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We address the power scaling issue in end-pumped laser rod amplifiers by studying, experimentally and numerically, the magnitude of thermal lensing in a high-energy diode-pumped Yb:YAG crystal. The spatio-temporal temperature profile of the gain medium and the focal length of the induced thermal lens are determined numerically. The influence of the repetition rate and pumping power on the temperature distribution is analyzed. Experimental measurements covered repetition rates between 1 and 10 Hz and up to 4 kW pumping power.

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Section: Theoretical Model and Simulationsmentioning

confidence: 99%

Thermal lens analysis in a diode-pumped 10 Hz 100 mJ Yb:YAG amplifier

Hariton

João

Pires

et al. 2020

High Pow Laser Sci Eng

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show abstract

“…15 Assume homogeneous cooling on the surface of the laser rod, which means the temperature at each point along the axis of the rod is fixed and the thermal conductivity coefficient is independent of temperature. 17 Under these assumptions, we can write a differential equation for thermal transfer in a cylindrical rod as follows: 14,[17][18][19] E Q -T A R G E T ; t e m p : i n t r a l i n k -; e 0 0 4 ; 6 3 ; 4 4…”

Section: End-pumping Configurationmentioning

confidence: 99%

Thermal loading effects on Nd:YAG solar-laser performance in end-pumping and side-pumping configurations: a review

et al. 2018

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“…Under these assumptions, we can write a differential equation for thermal transfer in a cylindrical crystal as follows [1,[6][7][8]:…”

Section: Thermooptic Effectsmentioning

confidence: 99%

“…Obtaining high power output in diode pumped solid-state (DPSS) lasers with good beam quality is limited by the thermal effects in the laser crystal which induce thermal lensing and losses due to depolarization and cracks in the laser crystal [1][2][3].…”

Section: Introductionmentioning

confidence: 99%

Finite Element Analysis of Thermal Effects in Diode End-Pumped Solid-State Lasers

El-Daher

2017

Advances in Optical Technologies

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Thermal effects are the main obstacle to getting high power and good beam quality in diode end-pumped solid-state lasers. In this work, a theoretical investigation of thermal effects in single and dual end-pumped solid-state lasers is carried out using finite element analysis (FEA) for a selected number of widely used laser producing materials, namely, Nd:YAG, Yb:YAG, and Nd:KGW. Crystals with different dimensions are also investigated both in single and in dual end-pumped configuration. Finally, the effect of using composite crystals on thermal lensing is investigated. An experiment to measure the thermal focal length for two different crystals was carried out and a comparison with FEA computed focal length of the thermal lens is made. In all cases studied in this work, results show clear effects of thermal lensing with some differences depending on crystal type, pump power, and size.

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Thermal distribution calculation in diode pumped Nd:YAG laser rod by boundary element method

Cited by 23 publications

References 5 publications

Thermal lens analysis in a diode-pumped 10 Hz 100 mJ Yb:YAG amplifier

Thermal lens analysis in a diode-pumped 10 Hz 100 mJ Yb:YAG amplifier

Thermal loading effects on Nd:YAG solar-laser performance in end-pumping and side-pumping configurations: a review

Finite Element Analysis of Thermal Effects in Diode End-Pumped Solid-State Lasers

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