High-energy single longitudinal mode 1 ns all-solid-state 266 nm lasers |
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Authors: | Qiang Liu Ming Lei Ma Li Gong Lei Huang Fa Hong He Xing Fu Xing Peng Yan |
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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: | A single longitudinal mode (SLM) short pulse high energy all-solid-state ultraviolet laser is demonstrated in this paper.
Through the use of a master oscillator power amplifier (MOPA) architecture, we have been able to provide high-energy outputs
with the combination of short pulses, good beam quality and SLM typically produced by a 1064 nm Nd:YAG laser. The passively
Q-switched SLM Nd:YAG laser in a twisted-mode cavity is operated as the seed source. After the seed is amplified by a double-pass
pre-amplifier and a single-pass main-amplifier, the 100 μJ, 1064 nm, ∼1 ns seeding pulse was amplified up to 400 mJ energy
in the total pulse train. Using a KTP crystal for second-harmonic generation and a CLBO for fourth-harmonic generation, we
successfully obtained a short pulse, high energy ultraviolet laser of 266 nm, with the output energy of 108 mJ, pulse width
1 ns and M2<5.
PACS 42.65.Ky; 42.72.Bj; 42.60.Da |
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