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Appl. Sci. 2019, 9(8), 1584; https://doi.org/10.3390/app9081584

Beam Control in an Intracavity Frequency-Doubling Semiconductor Disk Laser

1
State Key laboratory of Luminescence and Applications, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China
2
Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
3
TRUMPF GmbH, 71254 Ditzingen, Germany
*
Author to whom correspondence should be addressed.
Received: 23 February 2019 / Revised: 3 April 2019 / Accepted: 9 April 2019 / Published: 17 April 2019
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Abstract

In this paper, we have demonstrated a 1.3 W green laser using a V-shaped intracavity frequency doubling 1036 nm semiconductor disk laser. The beam quality of the fundamental and second harmonic generation (SHG) laser is investigated. It has been found that the output lasers at the fundamental and SHG wavelength both suffer from reduced beam quality along with power scaling. The measured beam profile is elliptical under high power operation. In order to improve the SHG laser beam, an intracavity aperture is employed to control the mode characteristics of fundamental frequency light. By fine-tuning the aperture, a nearly circular beam profile with improving beam quality and brightness is realized. View Full-Text
Keywords: semiconductor disk laser; frequency doubling; beam control; beam quality semiconductor disk laser; frequency doubling; beam control; beam quality
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Hou, G.; Wang, L.; Feng, J.; Popp, A.; Schmidt, B.; Lu, H.; Shu, S.; Tian, S.; Tong, C.; Wang, L. Beam Control in an Intracavity Frequency-Doubling Semiconductor Disk Laser. Appl. Sci. 2019, 9, 1584.

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