| FUNDAMENTAL AREAS OF PHENOMENOLOGY(INCLUDING APPLICATIONS) |
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Efficient Spherical Wavefront Correction near the Focus for the 0.89PW/29.0fs Ti:Sapphire Laser Beam |
| REN Zhi-Jun, LIANG Xiao-Yan**, YU Liang-Hong, LU Xiao-Ming, LENG Yu-Xin, LI Ru-Xin**, XU Zhi-Zhan**
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| State Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800 |
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| Cite this article: |
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REN Zhi-Jun, LIANG Xiao-Yan, YU Liang-Hong et al 2011 Chin. Phys. Lett. 28 024201 |
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Abstract We demonstrate a new loop system of the spherical wavefront (SW) correction near the beam focus to effectively improve the focusability of 0.89 PW/29.0 fs Ti:sapphire chirped pulse amplification laser. After wavefront correction, the Strehl ratio is improved to reach 0.91, and the focal spot size using the f/4 off−axis parabola is reduced to 6.34×6.94 μm2 (corresponding to 1.63×1.78 times diffraction limitation). With full peak power of 0.89 PW, the peak intensity of 2.59×1021 W/cm2 is obtained. The experimental results show that the SW correction scheme near the beam focus is comparatively simple, economic and high-efficient.
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| Keywords:
42.68.Wt
42.55.-f
06.60.Jn
42.60.Jf
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Received: 06 November 2010
Published: 30 January 2011
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| PACS: |
42.68.Wt
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(Remote sensing; LIDAR and adaptive systems)
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42.55.-f
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(Lasers)
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06.60.Jn
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(High-speed techniques)
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42.60.Jf
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(Beam characteristics: profile, intensity, and power; spatial pattern formation)
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