Abstract

An Nd:YAG slab structure was designed for a high-power zigzag slab laser amplifier based on computational simulation of the wavefront distortion. For the simulation, the temperature distribution in the slab was calculated at first by thermal analysis. Then, the optical path length (OPL) was obtained by a ray tracing method for the corresponding refractive index variation inside the slab. After that, the OPL distribution of the double-pass amplified beam was calculated by summing the results obtained for the first and second passes. The amount of wavefront distortion was finally obtained as the peak-to-valley value of the OPL distribution. As a result of this study, the length and position of the gain medium were optimized by minimizing the transverse wavefront distortion. Under the optimized conditions, the transverse wavefront distortion of the double-pass amplified beam was less than 0.2 μm for pump power of 14 kW.

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  12. J. S. Shin, Y.-H. Cha, G. Lim, Y. Kim, S.-O. Kwon, B. H. Cha, H. C. Lee, S. Kim, K. U. Koh, and H. T. KimWavefront improvement in an end-pumped high power Nd:YAG zigzag slab laserOpt. Express2017251930919319

Other (12)

H. Injeyan and G. D. GoodnoHigh-power Laser HandbookThe McGraw-Hill Companies, Inc.China2011

G. D. Goodno, S. Palese, J. Harkenrider, and H. InjeyanYb:YAG power oscillator with high brightness and linear polarizationOpt. Lett.20012616721674

G. D. Goodno, H. Komine, S. J. McNaught, S. B. Weiss, S. Redmond, W. Long, R. Simpson, E. C. Cheung, D. Howland, P. Epp, M. Weber, M. McClellan, J. Sollee, and H. InjeyanCoherent combination of high-power, zigzag slab lasersOpt. Lett.20063112471249

G. D. Goodno, C. P. Asman, J. Anderegg, S. Brosnan, E. C. Cheung, D. Hammons, H. Injeyan, H. Komine, W. H. Long, M. McClellan, S. J. McNaught, S. Redmond, R. Simpson, J. Sollee, M. Weber, S. B. Weiss, and M. WickhamBrightness-scaling potential of actively phase-locked solidstate laser arraysIEEE J. Sel. Topics Quantum Electron.200713460472

A. K. Sridharan, S. Saraf, S. Sinha, and R. L. ByerZigzag slabs for solid-state laser amplifiers: batch fabrication and parasitic oscillation suppressionAppl. Opt.20064533403351

W. M. Tulloch, T. S. Rutherford, E. K. Gustafson, and R. L. ByerCW high-power conduction-cooled edge-pumped slab laserProc. SPIE1999361327

W. M. Tulloch, T. S. Rutherford, E. K. Gustafson, and R. L. ByerA 100 W edge-pumped Nd:YAG conduction-cooled slab laserAdv. Solid-State Lasers199926911

X. Li, H. Xiao, X.-L. Dong, Y.-X. Ma, and X.-J. XuCoherent beam combining of two slab laser amplifier and second-harmonic phase locking based on a multi-dithering techniqueChin. Phys. Lett.201128094210

S. Li, X. Ma, H. Li, F. Li, X. Zhu, and W. ChenLaser-diode-pumped zigzag slab Nd:YAG master oscillator power amplifierChin. Phys. Lett.201311071402

J. S. Shin, Y.-H. Cha, B. H. Cha, H. C. Lee, H. T. Kim, and J. H. LeeSimulation of the wavefront distortion and beam quality for a high-power zigzag slab laserOpt. Commun.2016380446451

J. S. Shin, Y.-H. Cha, Y. Kim, G. Lim, B. H. Cha, H. C. Lee, S. Kim, and H. T. KimDesign of pump beam delivering optical system and doped YAG length to minimize the wavefront distortion in a high-power Nd:YAG zigzag slab laserOpt. Eng.201756016109

J. S. Shin, Y.-H. Cha, G. Lim, Y. Kim, S.-O. Kwon, B. H. Cha, H. C. Lee, S. Kim, K. U. Koh, and H. T. KimWavefront improvement in an end-pumped high power Nd:YAG zigzag slab laserOpt. Express2017251930919319

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