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Journal of the Optical Society of Korea

Journal of the Optical Society of Korea


  • Vol. 12, Iss. 4 — Dec. 25, 2008
  • pp: 298–302

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

Yong-Ho Cha, Myoung-Yerl Yang, Kwang-Hoon Ko, Gwon Lim, Jae-Min Han, Hyun-Min Park, Taek-Soo Kim, Si-Pyo Roh, and Do-Young Jeong  »View Author Affiliations

Journal of the Optical Society of Korea, Vol. 12, Issue 4, pp. 298-302 (2008)

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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 <TEX>$TEM_{00}$</TEX> <TEX>$Nd:YVO_4$</TEX> 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 (<TEX>$M^2$</TEX>) of the amplified laser beam is 5-10, and the pulse duration is maintained at 30 ns.

© 2008 Optical Society of Korea

OCIS Codes
(140.3280) Lasers and laser optics : Laser amplifiers
(140.3530) Lasers and laser optics : Lasers, neodymium
(140.6810) Lasers and laser optics : Thermal effects

Original Manuscript: October 24, 2008
Revised Manuscript: November 21, 2008
Manuscript Accepted: November 25, 2008
Published: December 31, 2008

Yong-Ho Cha, Myoung-Yerl Yang, Kwang-Hoon Ko, Gwon Lim, Jae-Min Han, Hyun-Min Park, Taek-Soo Kim, Si-Pyo Roh, and Do-Young Jeong, "270-W 15-kHz MOPA System Based on Side-pumped Rod-type Nd:YAG Gain Modules," J. Opt. Soc. Korea 12, 298-302 (2008)

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