基于双程放大的毛细管放电69.8 nm激光增益特性

刘涛; 赵永蓬; 崔怀愈; 刘晓琳

doi:10.7498/aps.68.20181617

摘要

建立了类氖氩C线69.8 nm激光的双程放大实验后反射腔结构, 利用45 cm长毛细管作为放电负载得到了其双程放大输出. 在相同初始实验条件下, 分别测量了单程放大输出与双程放大输出的激光脉冲光强、脉冲宽度以及激光束散角. 通过对比单程与双程输出实验结果, 利用双程放大激光光强的计算公式, 分析得到了增益持续时间大于4 ns, 以及增益在毛细管径向上的分布特点. 以上结果为建立谐振腔进行毛细管放电类氖氩激光的多程放大实验奠定了基础.

关键词:

Abstract

In this paper, a double-pass amplification experiment of a Ne-like Ar C line 69.8 nm laser is established. The 45-cmlong capillary is used as the discharge load to obtain a double-pass amplification output of a Ne-like Ar C line 69.8 nm laser. Under the same initial experimental conditions that the initial pressure is 15.4 Pa and the main pulse current amplitude is 13.5 kA, the laser pulse intensity and the full width at half maximum (FWHM) of the laser pulse of the single-pass amplification output and the double-pass amplification output are measured by a vacuum X-ray diode (XRD) behind a vacuum ultraviolet (VUV) monochromator (Acton VSN-515) which is used to disperse the extreme ultraviolet (EUV) emission. And then the laser beam divergence of single-pass amplification output and double-pass amplification output are also measured by a space-resolving flat-field EUV spectrograph combined with an EUV CCD (Andor Newton DO920P-BN). The amplitude of the double-pass amplification laser output is 9 times larger than that of single-pass amplification output, and the FWHM of the double-pass amplification laser pulse is nearly 2.4 ns. While the laser beam divergence angle of the double-pass amplification output is 6.6 times wider than that of single-pass amplification output. By comparing the single-pass amplification and double-pass amplification output experimental results, the gain duration of the gain medium in the double-pass amplification and the radial distribution characteristics of the gain medium are analyzed by using the calculation formula of the double-pass amplification laser intensity. The gain duration is more than 4 ns, during this time the gain coefficient decreases at 1.6 ns. And the gain coefficient is the smallest at 2.8 ns, meanwhile the intensity of the single-pass amplification laser is maximum, and the gain medium is in the gain saturation state. So this result indicates that the minimum gain coefficient at this moment is due to the gain saturation effect. Using a similar calculation method to analyze the spatial distribution of gain coefficients, the gain on the plasma axis is larger than that off the plasma axis. These results lay a foundation for the subsequent establishment of resonant cavity and the multi-pass amplification experiment of capillary discharge Ne-like Ar laser.

Keywords:

作者及机构信息

1.
中国民航大学电子信息与自动化学院, 天津　300300

2.
哈尔滨工业大学, 可调谐激光技术国家级重点实验室, 哈尔滨　150080

通信作者: 赵永蓬, zhaoyp3@hit.edu.cn

基金项目: 国家自然科学基金(批准号: 61875045)和天津市自然科学基金(批准号: 17JCYBJC18200)资助的课题.

Authors and contacts

1.
College of Electronic Information and Automation, Civil Aviation University of China, Tianjin 300300, China

2.
National Key Laboratory of Science and Technology on Tunable Laser, Harbin Institute of Technology, Harbin 150080, China

Corresponding author: Zhao Yong-Peng, zhaoyp3@hit.edu.cn

Funds: Project supported by the National Natural Science Foundation of China (Grant No. 61875045) and the Natural Science Foundation of Tianjin, China (Grant No. 17JCYBJC18200).

文章全文 : translate this paragraph

参考文献

[1]	Carbajo S, Howlett I D, Brizuela F, Buchanan K S, Marconi M C 2012 Opt. Lett. 37 2994 Google Scholar
[2]	Nejdl J, Howlett I D, Carlton D, Anderson E H, Chao W, Marconi M C, Rocca J J, Menoni C S 2015 IEEE Photon. J. 7 1
[3]	Rocca J J, Shlyaptsev V, Tomasel F G, Cortazar O D, Hartshorn D, Chilla J L 1994 Phys. Rev. Lett. 73 2192 Google Scholar
[4]	Zhao Y P, Jiang S, Xie Y, Yang D W, Teng S P, Chen D Y, Wang Q 2011 Opt. Lett. 36 3458 Google Scholar
[5]	Frati M, Seminario M, Rocca J J 2000 Opt. Lett. 25 1022 Google Scholar
[6]	Tomasel F G, Rocca J J, Shlyaptsev V N, Macchietto C D 1997 Phys. Rev. A 55 1437 Google Scholar
[7]	Elton R C, Datla R U, Roberts J R, Bhatia A K 1989 Phys. Rev. A 40 4142 Google Scholar
[8]	Bernstein E R, Dong F, Guo Y Q, Shin J W, Heinbuch S, Rocca J J 2016 X-Ray Laser (Switzerland: Springer) p359
[9]	Menoni C S, Nejdl J, Monserud N, Howleet I D, Carlton D, Anderson E H, Chao W, Marconi M C, Rocca J J 2016 X-Ray Laser 2014 (Switzerland: Springer) p259
[10]	Suckewer S, Skinner C H, Milchberg H, Keane C, Voorhee D 1985 Phys. Rev. Lett. 55 1753 Google Scholar
[11]	Ceglio N M, Gaines D P, Trebes J E, London R A, Stearns D G 1988 Appl. Opt. 27 5022 Google Scholar
[12]	Murai K, Yuan G, Kodama R, Daido H, Kato Y, Niibe M, Miyake A, Tsukamoto M, Fukuda Y, Neely D, Macphee A G 1994 Jpn. J. Appl. Phys. 33 L600 Google Scholar
[13]	Carillon A, Chen H Z, Dhez P, Dwivedi L, Jacoby J, Jaegle P, Jamelot G, Zhang J, Key M H, Kidd A, Klisnick A, Kodama R, Krishnan J, Lewis C, Neely D, Norreys P, O’Neill D, Pert G J, Ramsden S, Raucourt J P, Tallents G, Uhomoibhi J O 1992 Phys. Rev. Lett. 68 2917 Google Scholar
[14]	He S T, Chunyu S T, Zhang Q R, He A, Shen H Z, Ni Y L, Yu S Y 1992 Phys. Rev. A 46 1610 Google Scholar
[15]	安红海, 王琛, 方智恒, 熊俊, 孙今人, 王伟, 傅思祖, 乔秀梅, 郑无敌, 张国平 2011 物理学报 60 104207 Google Scholar An H H, Wang C, Fang Z H, Xiong J, Sun J R, Wang W, Fu S Z, Qiao X M, Zheng W D, Zhang G P 2011 Acta Phys. Sin. 60 104207 Google Scholar
[16]	Ceglio N M, Gaines D P, Stearns D G, Hawryluk A M 1989 Opt. Commun. 69 285 Google Scholar
[17]	Rus B, Mocek T, Präg A R, Kozlová M, Jamelot G, Carillon A, Ros D, Joyeux D, Phalippou D 2002 Phys. Rev. A 66 063806 Google Scholar
[18]	Rocca J J, Clark D P, Chilla J L A, Shlyaptsev V N 1996 Phys. Rev. Lett. 77 1476 Google Scholar
[19]	Zhao Y P, Liu T, Zhang W H, Li W, Cui H Y 2016 Opt. Lett. 41 3779 Google Scholar
[20]	Rus B, Carillon A, Dhez P, Jaegle´ P, Jamelot G, Klisnick A, Nantel M, Zeitoun P 1997 Phys. Rev. A 55 3858 Google Scholar
[21]	Zhao Y P, Liu T, Jiang S, Cui H Y, Ding Y J, Li L 2016 Appl. Phys. B 122 107

施引文献

图 1 双程放大实验反射镜位置示意图

Fig. 1. Schematic diagram of position of mirror in double-pass amplification.

下载: 全尺寸图片幻灯片

图 2 单程放大和双程放大输出脉冲波形　(a)单程放大输出; (b)双程放大输出

Fig. 2. The pulse waveform of single-pass amplification and double-pass amplification output: (a) Single-pass amplification output; (b) double-pass amplification output.

下载: 全尺寸图片幻灯片

图 3 毛细管径向上CCD图像　(a)单程放大强度图像; (b)双程放大强度图像

Fig. 3. CCD image in capillary radius: (a) Intensity image of single-pass amplification; (b) intensity image of double-pass amplification.

下载: 全尺寸图片幻灯片

图 4 毛细管径向上激光束散角　(a) 单程放大的束散角; (b) 双程放大的束散角

Fig. 4. Laser divergence angle in capillary radius: (a) Divergence angle of the single-pass amplification; (b) divergence angle of the double-pass amplification.

下载: 全尺寸图片幻灯片

图 5 69.8 nm激光的增益系数随时间的变化

Fig. 5. Gain coefficient as a function of time for 69.8 nm laser.

下载: 全尺寸图片幻灯片

图 6 69.8 nm激光峰值处的增益系数在空间上的分布情况

Fig. 6. Gain coefficient as a function of angle in the spatial distribution for 69.8 nm laser peak.

下载: 全尺寸图片幻灯片

表 1 单程放大与双程放大尖峰位置处激光强度

Table 1. The peak position laser intensity of single-pass amplification and double-pass amplification.

尖峰位置/mrad	−1.41	−0.92	−0.49	0	0.25	0.68	1.23
单程放大强度/arb.units	2345	4525	6708	15712	9964	7076	7017
双程放大强度/arb.units	55844	56762	56128	51205	54803	50772	44720
增长倍数	23.8	12.5	8.4	3.3	5.5	7.2	6.4

下载: 导出CSV

[1]	Carbajo S, Howlett I D, Brizuela F, Buchanan K S, Marconi M C 2012 Opt. Lett. 37 2994 Google Scholar
[2]	Nejdl J, Howlett I D, Carlton D, Anderson E H, Chao W, Marconi M C, Rocca J J, Menoni C S 2015 IEEE Photon. J. 7 1
[3]	Rocca J J, Shlyaptsev V, Tomasel F G, Cortazar O D, Hartshorn D, Chilla J L 1994 Phys. Rev. Lett. 73 2192 Google Scholar
[4]	Zhao Y P, Jiang S, Xie Y, Yang D W, Teng S P, Chen D Y, Wang Q 2011 Opt. Lett. 36 3458 Google Scholar
[5]	Frati M, Seminario M, Rocca J J 2000 Opt. Lett. 25 1022 Google Scholar
[6]	Tomasel F G, Rocca J J, Shlyaptsev V N, Macchietto C D 1997 Phys. Rev. A 55 1437 Google Scholar
[7]	Elton R C, Datla R U, Roberts J R, Bhatia A K 1989 Phys. Rev. A 40 4142 Google Scholar
[8]	Bernstein E R, Dong F, Guo Y Q, Shin J W, Heinbuch S, Rocca J J 2016 X-Ray Laser (Switzerland: Springer) p359
[9]	Menoni C S, Nejdl J, Monserud N, Howleet I D, Carlton D, Anderson E H, Chao W, Marconi M C, Rocca J J 2016 X-Ray Laser 2014 (Switzerland: Springer) p259
[10]	Suckewer S, Skinner C H, Milchberg H, Keane C, Voorhee D 1985 Phys. Rev. Lett. 55 1753 Google Scholar
[11]	Ceglio N M, Gaines D P, Trebes J E, London R A, Stearns D G 1988 Appl. Opt. 27 5022 Google Scholar
[12]	Murai K, Yuan G, Kodama R, Daido H, Kato Y, Niibe M, Miyake A, Tsukamoto M, Fukuda Y, Neely D, Macphee A G 1994 Jpn. J. Appl. Phys. 33 L600 Google Scholar
[13]	Carillon A, Chen H Z, Dhez P, Dwivedi L, Jacoby J, Jaegle P, Jamelot G, Zhang J, Key M H, Kidd A, Klisnick A, Kodama R, Krishnan J, Lewis C, Neely D, Norreys P, O’Neill D, Pert G J, Ramsden S, Raucourt J P, Tallents G, Uhomoibhi J O 1992 Phys. Rev. Lett. 68 2917 Google Scholar
[14]	He S T, Chunyu S T, Zhang Q R, He A, Shen H Z, Ni Y L, Yu S Y 1992 Phys. Rev. A 46 1610 Google Scholar
[15]	安红海, 王琛, 方智恒, 熊俊, 孙今人, 王伟, 傅思祖, 乔秀梅, 郑无敌, 张国平 2011 物理学报 60 104207 Google Scholar An H H, Wang C, Fang Z H, Xiong J, Sun J R, Wang W, Fu S Z, Qiao X M, Zheng W D, Zhang G P 2011 Acta Phys. Sin. 60 104207 Google Scholar
[16]	Ceglio N M, Gaines D P, Stearns D G, Hawryluk A M 1989 Opt. Commun. 69 285 Google Scholar
[17]	Rus B, Mocek T, Präg A R, Kozlová M, Jamelot G, Carillon A, Ros D, Joyeux D, Phalippou D 2002 Phys. Rev. A 66 063806 Google Scholar
[18]	Rocca J J, Clark D P, Chilla J L A, Shlyaptsev V N 1996 Phys. Rev. Lett. 77 1476 Google Scholar
[19]	Zhao Y P, Liu T, Zhang W H, Li W, Cui H Y 2016 Opt. Lett. 41 3779 Google Scholar
[20]	Rus B, Carillon A, Dhez P, Jaegle´ P, Jamelot G, Klisnick A, Nantel M, Zeitoun P 1997 Phys. Rev. A 55 3858 Google Scholar
[21]	Zhao Y P, Liu T, Jiang S, Cui H Y, Ding Y J, Li L 2016 Appl. Phys. B 122 107

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