A new laser scheme for energy scaling with a composite six-mirror cavity |
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| Authors: | M Lei M Gong Q Liu Y Wang |
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| Institution: | (1) Center for Photonics and Electronics, State Key Laboratory of Tribology, Department of Precision Instruments and Mechanology, Tsinghua University, Beijing, 100084, P.R. China |
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| Abstract: | We have developed a novel and compact six-mirror cavity configuration to combine four multimode laser modules intracavity
for energy scaling. Compared to the conventional 2×N channel scaling schemes, this close-ended six-mirror cavity is simpler,
more stable and more practical. Diode-side-pumped rod laser geometry that is appropriate for beam combination is employed
in the branch laser module. The characteristics of the output energy and the beam quality are investigated experimentally.
With the six-mirror cavity, the output brightness is significantly improved compared to single F–P cavity laser. A single
beam output exceeding 453 mJ with 165 μs duration is achieved, with the combination efficiency of 90.7%.
PACS 42.60.Da; 42.60.Jf; 42.60.By |
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