High-Power Narrow-Linewidth Q-Switched TEM<sub>00</sub> Mode 355-nm Laser

High-Power Narrow-Linewidth Q-Switched TEM<sub>00</sub> Mode 355-nm Laser

We report on a high pulse energy, narrow-linewidth, Q-switched ultraviolet (UV) laser at 355 nm from the third harmonic generation (THG) of a 1064-nm Nd:YAG master oscillator power amplifier (MOPA) system. An output of 37 W at 355 nm was obtained with a pulse duration of 32 ns and a linewidth of &am...

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Bibliographic Details
Main Authors: Yujiao Li, Wei Tu, Baoshang Wang, Nan Zong, Feng Yang, Fengfeng Zhang, Shenjin Zhang, Zhimin Wang, Qinjun Peng, Dafu Cui, Zuyan Xu
Format: Article
Language:English
Published: IEEE 2018-01-01
Series:IEEE Photonics Journal
Subjects:
Solid-state
diode-pumped laser
ultraviolet
Q-switched
linewidth
frequency doubled
Online Access:https://ieeexplore.ieee.org/document/8334421/
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Summary:We report on a high pulse energy, narrow-linewidth, Q-switched ultraviolet (UV) laser at 355 nm from the third harmonic generation (THG) of a 1064-nm Nd:YAG master oscillator power amplifier (MOPA) system. An output of 37 W at 355 nm was obtained with a pulse duration of 32 ns and a linewidth of &#x223C;2.5 pm. The beam-quality factor was measured to be <inline-formula><tex-math notation="LaTeX">$M^{2}$</tex-math></inline-formula> &#x003D; 1.24. This is, to the best of our knowledge, the highest average power for a Q-switched narrow-linewidth TEM<sub>00</sub> UV laser at 355 nm. Meanwhile, a multimode laser rate equations model was used for theoretical analysis on the linewidth and pulse duration of the fundamental laser oscillator for the first time, and the calculated results agree well with the experimental data.
ISSN:1943-0655

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