Compact 532 nm Laser With 59 mJ Pulse Energy Output
We have developed an external frequency doubling Nd:YAG laser with high beam quality, side-pumped by a high-temperature semiconductor laser. The beam quality was optimized using an unstable resonator configuration combined with a variable reflectivity mirror (VRM). This setup, coupled with the high-...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
IEEE
2025-01-01
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| Series: | IEEE Access |
| Subjects: | |
| Online Access: | https://ieeexplore.ieee.org/document/11071668/ |
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| Summary: | We have developed an external frequency doubling Nd:YAG laser with high beam quality, side-pumped by a high-temperature semiconductor laser. The beam quality was optimized using an unstable resonator configuration combined with a variable reflectivity mirror (VRM). This setup, coupled with the high-temperature side-pumping of the Nd:YAG laser crystal and external frequency doubling, resulted in highly stable 532 nm laser output. At a pump current of 100 A and a repetition rate of 50 Hz, the laser produced single-pulse energy of over 50 mJ, with a pulse width of 10.5 ns, and a beam quality factor of <inline-formula> <tex-math notation="LaTeX">$M^{2} \approx 5.5$ </tex-math></inline-formula>. The system demonstrated continuous operation for 300 seconds with output energy stability fluctuations of less than 5%. This work presents a compact, high pulse energy green laser, providing a technological reference for airborne high pulse energy laser systems. |
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| ISSN: | 2169-3536 |