Browse > Article
http://dx.doi.org/10.3807/JOSK.2008.12.4.298

270-W 15-kHz MOPA System Based on Side-pumped Rod-type Nd:YAG Gain Modules  

Cha, Yong-Ho (Quantum Optics Division, Korea Atomic Energy Research Institute)
Yang, Myoung-Yerl (Quantum Optics Division, Korea Atomic Energy Research Institute)
Ko, Kwang-Hoon (Quantum Optics Division, Korea Atomic Energy Research Institute)
Lim, Gwon (Quantum Optics Division, Korea Atomic Energy Research Institute)
Han, Jae-Min (Quantum Optics Division, Korea Atomic Energy Research Institute)
Park, Hyun-Min (Quantum Optics Division, Korea Atomic Energy Research Institute)
Kim, Taek-Soo (Quantum Optics Division, Korea Atomic Energy Research Institute)
Roh, Si-Pyo (Quantum Optics Division, Korea Atomic Energy Research Institute)
Jeong, Do-Young (Quantum Optics Division, Korea Atomic Energy Research Institute)
Publication Information
Journal of the Optical Society of Korea / v.12, no.4, 2008 , pp. 298-302 More about this Journal
Abstract
We have developed a 270-W 15-kHz MOPA system based on side-pumped rod-type Nd:YAG gain modules. The master oscillator is a 3-W 15-kHz $TEM_{00}$ $Nd:YVO_4$ laser with a pulse duration of 30 ns. To preserve the high beam quality during the amplification, we use image relay and polarization rotation which can simultaneously compensate for thermal lensing and thermal birefringence generated in the rod-type gain modules. After the amplification to 270 W with six rod-type gain modules, the beam quality factor ($M^2$) of the amplified laser beam is 5-10, and the pulse duration is maintained at 30 ns.
Keywords
Nd:YAG lasers; High-power lasers; MOPA laser system;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
Times Cited By Web Of Science : 1  (Related Records In Web of Science)
Times Cited By SCOPUS : 0
연도 인용수 순위
1 H. J. Moon, S. M. Lee, H. S. Kim, D. K. Ko, B. H. Cha, J. H. Yi, and J. M. Lee, “Operation Characteristics of Diode-Pumped, Bifocusing Compensated Two-Rod Nd:YAG Lasers with Diffusive Reflectors,” J. Korean Phys. Soc. vol. 39, pp. 881-885, 2001
2 J. Richards, “Birefringence compensation in polarization coupled lasers,” Appl. Opt. vol. 26, pp. 2514-2517, 1987   DOI
3 T. M. Jeong, C. W. Lee, D. K. Ko , J. M. Lee, and H. S. Kim, “Analysis of a Laser Resonator from the Measurement of Thermal Aberrations in a Laser-Diode Side-Pumped Nd:YAG Laser with a Wavefront Sensor,” J. Korean Phys. Soc. vol. 51, pp. 78-83, 2007   DOI   ScienceOn
4 D. Y. Jeong, K. H. Ko, G. Lim, and C. J. Kim, “Method for isotope separation of thallium,” US Patent 7,323,651 B2, 2008
5 W. C. Scott and M. de Wit, “Birefringence compensation and TEM00 mode enhancement in a Nd:YAG laser,” Appl. Phys. Lett. vol. 18, pp. 3-4, 1971   DOI
6 R. Bhushan, K. Tsubakimoto, H. Yoshida, H. Fujita, and M. Nakatsuka, “Simultaneous compensation of birefringence and thermal lensing effect in a high average power Nd:YAG amplifier,” CLEO/Pacific Rim 2007, Technical Digest WP-11, pp. 557-558
7 J. T. Hunt, J. A. Glaze, W. W. Simmons, and P. A. Renard, “Suppression of self-focusing through low-pass spatial filtering and relay imaging,” Appl. Opt. vol. 17, pp. 2053-2057, 1978   DOI
8 T. M. Jeong, C. M. Kim , D. K. Ko, and J. M. Lee, “Reconstruction of Wavefront Aberration of 100-TW Ti:sapphire Laser Pulse Using Phase Retrieval Method,” J. Opt. Soc. Korea, vol. 12, pp. 186-191, 2008   과학기술학회마을   DOI   ScienceOn
9 S. Palese, J. Harkenrider, W. Long, F. Chui, D. Hoffmaster, W. Burt, H. Injeyan, G. Conway, G. Truong, and F. Tapos, “High Brightness, End-Pumped, Conduction Cooled Nd:YAG Zig-Zag Slab Laser Architecture,” Advanced Solid State Lasers, C. Marshall, ed., vol. 50 of OSA Trends in Optics and Photonics (Optical Society of America, 2001), pp. 41–46
10 P. Zhu, D. Li, P. Hu, A. Schell, P. Shi, C. R. Haas, N. Wu, and K. Du, “High efficiency 165 W near-diffractionlimited $Nd:YVO_4$ slab oscillator pumped at 880 nm,” Opt. Lett. vol. 33, pp. 1930-1932, 2008   DOI   ScienceOn
11 W. Koechner and D. K. Rice, “Effect of Birefringence on the Performance of Linearly Polarized YAG:Nd Lasers,” IEEE J. Quantum Elec., vol. 6, pp. 557-566, 1970   DOI
12 J. R. Park, J. Y. Lee, H. S. Kim, K. Y. Um, and H. J. Kong, “Characteristics of a Birefringence Compensation Scheme in Nd3+:YAG Rods Using a Polarization Rotator and Imaging Optics,” Opt. Rev. vol. 4, pp. 170-175, 1997   DOI