Research on performance promotion of plasma electrode Pockels cell
-
摘要: 等离子体电极普克尔盒被广泛应用于大型激光驱动器中，用于抑制自激振荡、实现多程放大控制和反激光隔离，普克尔盒内的放电电极在长期使用过程中与腔内残余O2发生反应出现退化现象，导致稳定性下降，寿命降低。为此，提出了封离型等离子体电极普克尔盒，其放电腔内的Ne气浓度可达99.9%，漏率小于1.0×10−10 Pa ∙ m3∙s−1，理论使用年限大于40年。实验表明，封离型等离子体电极普克尔盒在工作20万发次后，其放电电极依然光亮如新，时间抖动仍稳定在6.4 ns附近，稳定性有了大幅提升。Abstract: A sealed plasma electrode pockels cell (PEPC) has been developed for use on the petawatt and exawatt class laser system that can be used in high-contrast optical switch, as required for suppression of self-oscillation, isolation from retroreflected pulses, and control of output beams. The initial concentration of Ne in the discharge cell is more than 99.9%, which prevents the discharge electrodes from reacting with O2 comparing with unsealed PEPC. The theoretical lifetime of the sealed PEPC is more than 40 years as the leak rate of the sealed PEPC is smaller than 1.0×10−10 Pa∙m3∙s−1. The experimental results show that, the discharge electrodes in the sealed PEPC are still as fresh as new after firing 200,000 times and the time jitter is still below 6.4 ns.
-
Key words:
- electro-optical switch /
- plasma electrode /
- Pockels cell /
- gas discharge /
- sealed switch
-
表 1 封离型PEPC测量漏率
Table 1. Leak rate of sealed PEPC
No. leak rate/(Pa∙m3∙s−1) No. leak rate/(Pa∙m3∙s−1) ZJ01 1.0×10−10 ZJ06 1.2×10−13 ZJ02 1.3×10−13 ZJ07 5.0×10−11 ZJ03 1.5×10−13 ZJ08 1.2×10−13 ZJ04 8.0×10−13 ZJ09 3.0×10−11 ZJ05 8.0×10−12 ZJ10 1.8×10−13 
下载: 导出CSV
-
[1] Danson C N, Haefner C, Bromage J, et al. Petawatt and exawatt class lasers worldwide[J]. High Power Laser Science and Engineering, 2009, 7: E54. [2] Maywar D N, Kelly J H, Waxer L J, et al. OMEGA EP high-energy petawatt laser: progress and prospects[J]. Journal of Physics: Conference Series, 2008, 112: 032007. doi: 10.1088/1742-6596/112/3/032007 [3] Goldhar J, Henesian M A. Electro-optical switches with plasma electrodes[J]. Optics Letters, 1984, 9(3): 73-75. doi: 10.1364/OL.9.000073 [4] Bochkov E I, Babich L P, Bel’kov S A, et al. Computation of optimal operation voltage of the neon-filled plasma Pockels cell[J]. IEEE Transactions on Plasma Science, 2020, 48(9): 3122-3127. doi: 10.1109/TPS.2020.3017545 [5] 吕传信, 鲁敬平, 张雄军. 300mm×300mm口径电光开关等离子体电极实验研究[J]. 强激光与粒子束, 1997, 9(2):271-276Lv Chuanxin, Lu Jingping, Zhang Xiongjun. Study of plasma electrode used for electro-optical switch with a clear aperture of 300mm×300mm[J]. High Power Laser and Particle Beams, 1997, 9(2): 271-276 [6] Kruschwitz B E, Kelly J H, Shoup M J, et al. High-contrast plasma-electrode Pockels cell[J]. Applied Optics, 2007, 46(8): 1326-1332. doi: 10.1364/AO.46.001326 [7] Gardelle J, Pasini E. A simple operation of a plasma-electrode Pockel’s cell for the laser megajoules[J]. Journal of Applied Physics, 2002, 91(5): 2631-2636. doi: 10.1063/1.1446243 [8] Zhang Xiongjun, Wu Dengsheng, Lin Donghui, et al. Compact plasma Pockels cell for TIL of SGIII laser facility[C]//Proceedings of SPIE 6838, Optoelectronic Devices and Integration II. 2008: 68380Y. [9] 张雄军, 郑建刚, 郑奎兴, 等. 用于多程放大系统光束反转器的等离子体电极电光开关[J]. 强激光与粒子束, 2003, 15(2):150-154Zhang Xiongjun, Zheng Jiangang, Zheng Kuixing, et al. PEPC electro-optical switch used in beam reverser of multipass amplifier[J]. High Power Laser and Particle Beams, 2003, 15(2): 150-154 [10] Zhang Jun, Zhang Xiongjun, Zheng Jiangang, et al. Aperture scalable, high-average power capable, hybrid-electrode Pockels cell[J]. Optics Letters, 2017, 42(9): 1676-1679. doi: 10.1364/OL.42.001676 [11] Rhodes M A, Woods B, DeYoreo J J, et al. Performance of large-aperture optical switches for high-energy inertial-confinement fusion lasers[J]. Applied Optics, 1995, 34(24): 5312-5325. doi: 10.1364/AO.34.005312 [12] Zhang Jun, Wu Dengsheng, Zheng Jiangang, et al. Single-pulse driven, large-aperture, 2×1 array plasma-electrodes optical switch for SG-II upgrading facility[C]//Proceedings of SPIE 9294, International Symposium on Optoelectronic Technology and Application. 2014: 92940N. [13] 郑奎兴, 鲁敬平, 张雄军, 等. 平面磁控阴极用于PEPC等离子体放电实验研究[J]. 强激光与粒子束, 2000, 12(s1):141-144Zheng Kuixing, Lu Jingping, Zhang Xiongjun, et al. Research on the discharge of planar magnetron cathode in PEPC[J]. High Power Laser and Particle Beams, 2000, 12(s1): 141-144 [14] Babich L P, Bochkov E I, Garanin S G, et al. Analysis of the transmission “window” formation in the electrooptical switch of laser pulses with plasma electrodes[J]. IEEE Transactions on Plasma Science, 2017, 45(1): 85-90. doi: 10.1109/TPS.2016.2635198 [15] Andreev N F, Babin A A, Davydov V S, et al. Wide-aperture plasma-electrode Pockels cell[J]. Plasma Physics Reports, 2011, 37(13): 1219-1224. doi: 10.1134/S1063780X1106002X [16] Gu Boqin, Huang Xinglu. Investigation of leak detection method by means of measuring the pressure increment in vacuum[J]. Vacuum, 2006, 80(9): 996-1002. doi: 10.1016/j.vacuum.2006.01.005 -
点击查看大图
图(5) / 表(1)
计量
- 文章访问数: 437
- HTML全文浏览量: 186
- PDF下载量: 63
- 被引次数: 0
