Lasers, Fiber Optics, and Communications

Design of pump beam delivering optical system and doped YAG length to minimize the wavefront distortion in a high-power Nd:YAG zigzag slab laser

[+] Author Affiliations
Jae Sung Shin, Yong-Ho Cha, Yonghee Kim, Gwon Lim, Byung Heon Cha

Korea Atomic Energy Research Institute, 111 Daedeok-daero 989Beon-gil, Yuseong-gu, Daejeon, Republic of Korea

Hyeon Cheor Lee, Sangin Kim, Hyun Tae Kim

Hanwha Defense Systems, 799 Gongdan-ro, Seongsan-gu, Changwon-si, Gyeongsangnam-do, Republic of Korea

Opt. Eng. 56(1), 016109 (Jan 13, 2017). doi:10.1117/1.OE.56.1.016109
History: Received November 17, 2016; Accepted December 22, 2016
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Abstract.  An end-pumped high-power Nd:YAG zigzag slab continuous wave laser amplifier was designed through a computational simulation to minimize the wavefront distortion of the output laser beam. The pump beam delivering optical system was optimized with an acylindrical slow-axis lens to lower the distortion of nonzigzag propagation for the beam height axis. In addition, the wavefront distortion of the zigzag propagation for the beam width axis was studied and minimized by slightly changing the doped YAG length. The simulation results of the final design showed a peak-to-valley optical phase difference (OPDPV) of 0.83  μm and a very low beam quality of 1.19× diffraction limit, even with a total pump power of 10 kW.

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© 2017 Society of Photo-Optical Instrumentation Engineers

Citation

Jae Sung Shin ; Yong-Ho Cha ; Yonghee Kim ; Gwon Lim ; Byung Heon Cha, et al.
"Design of pump beam delivering optical system and doped YAG length to minimize the wavefront distortion in a high-power Nd:YAG zigzag slab laser", Opt. Eng. 56(1), 016109 (Jan 13, 2017). ; http://dx.doi.org/10.1117/1.OE.56.1.016109


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