Thermal analysis and experimental study of end-pumped Nd: YLF laser at 1053 nm

We have numerically analyzed the thermal effects in Nd: YLF laser rod. The calculations of temperature and stress distributions in the Nd: YLF laser rod was performed with finite element (FE) simulations. The calculations showed that the laser rod could be pumped up to a power of 40 W without fractu...

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Bibliographic Details
Published in:Photonic sensors (Berlin) 2017-12, Vol.7 (4), p.329-335
Main Authors: El-Agmy, R. M., Al-Hosiny, N.
Format: Article
Language:English
Subjects:
Computer simulation
Finite element method
Lasers
Mathematical analysis
Measurement Science and Instrumentation
Microwaves
Neodymium lasers
Optical Devices
Optics
Photonics
Physics
Physics and Astronomy
Regular
RF and Optical Engineering
Shack-Hartmann sensors
Solid state lasers
Temperature effects
Thermal analysis
Thermal lensing
thermally induced lens
wavefront sensors
YLF lasers
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Summary:We have numerically analyzed the thermal effects in Nd: YLF laser rod. The calculations of temperature and stress distributions in the Nd: YLF laser rod was performed with finite element (FE) simulations. The calculations showed that the laser rod could be pumped up to a power of 40 W without fracture caused by thermal stress. The calculated thermal lens power of thermally induced lens in Nd: YLF ( σ -polarization) laser rod was analyzed and validated experimentally with two independent techniques. A Shack-Hartmann wavefront sensor and a Mach-Zehnder interferometer were used for direct measurements of focal thermal lens at different pump powers. The obtained measurements were coinciding with the FE simulations.
ISSN:1674-9251
2190-7439
DOI:10.1007/s13320-017-0412-6