Development of an HCN dual laser for the interferometer on EAST**Contributed paper, published as part of the Proceedings of the 3rd Domestic Electromagnetic Plasma Diagnostics Workshop, September 2016, Hefei, China.
文献类型：期刊论文
| 作者 | LI,Gen1; WEI,Xuechao2; LIU,Haiqing2 ; SHEN,Junjie1; JIE,Yinxian2; LIAN,Hui2; ZENG,Long2; ZOU,Zhiyong2; ZHANG,Jibo2; WANG,Shouxin2
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| 刊名 | Plasma Science and Technology
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| 出版日期 | 2017-06-20 |
| 卷号 | 19 |
| 关键词 | HCN laser interferometer dual laser laser power intermediate frequency |
| ISSN号 | 1009-0630 |
| DOI | 10.1088/2058-6272/aa667b |
| 英文摘要 | Abstract A two-color continuous wave (CW) discharge-pumped far-infrared (FIR) hydrogen cyanide (HCN) laser was developed as the source of an interferometer for measuring the line-averaged electron density in the Experimental Advanced Superconducting Tokamak (EAST). The output power of the dual laser system was about 120 mW from each laser on the 337 μm (0.89 THz) line. The polarization of each output beam was fixed using thin tungsten filaments and oscillated in the EH11 mode. Different megahertz intermediate frequencies (IF) and a slight frequency offset (～1 MHz) were generated in this system to replace the traditional rotating grating with ～10 kHz IF, and this can improve the time resolution of the interferometer significantly. The experimental result showed that different IF signals were obtained by successfully adjusting the cavity length. In particular, the beat frequency was captured at ～1.3 MHz by a Schottky mixer when the length of the resonant cavities was changed by 5 μm by an automatic adjustment system. In order to study the character of IF, a long time record of the IF signal was carried out, and the IF signal could be stabilized for a few minutes in the range of 2 MHz to 3 MHz. A real-time IF stability control system was initially designed for long pulse discharge experiments on the EAST. The ～MHz frequency response and good phase sensitivity of the dual laser HCN interferometer will allow the system to track fast density profiles and resolve fast MHD events, such as tearing/neoclassical tearing, disruptions, etc. |
| 语种 | 英语 |
| WOS记录号 | IOP:1009-0630-19-8-AA667B |
| 出版者 | IOP Publishing |
| 源URL | [http://ir.hfcas.ac.cn:8080/handle/334002/42981]  |
| 专题 | 中国科学院合肥物质科学研究院 |
| 作者单位 | 1.Tianjin Key Laboratory of the Design and Intelligent Control of the Advanced Mechatronical System, Tianjin University of Technology, Tianjin 300384, People’s Republic of China 2.Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, People’s Republic of China |
| 推荐引用方式 GB/T 7714 | LI,Gen,WEI,Xuechao,LIU,Haiqing,et al. Development of an HCN dual laser for the interferometer on EAST**Contributed paper, published as part of the Proceedings of the 3rd Domestic Electromagnetic Plasma Diagnostics Workshop, September 2016, Hefei, China.[J]. Plasma Science and Technology,2017,19. |
| APA | LI,Gen.,WEI,Xuechao.,LIU,Haiqing.,SHEN,Junjie.,JIE,Yinxian.,...&WANG,Shouxin.(2017).Development of an HCN dual laser for the interferometer on EAST**Contributed paper, published as part of the Proceedings of the 3rd Domestic Electromagnetic Plasma Diagnostics Workshop, September 2016, Hefei, China..Plasma Science and Technology,19. |
| MLA | LI,Gen,et al."Development of an HCN dual laser for the interferometer on EAST**Contributed paper, published as part of the Proceedings of the 3rd Domestic Electromagnetic Plasma Diagnostics Workshop, September 2016, Hefei, China.".Plasma Science and Technology 19(2017). |
入库方式： OAI收割
来源：合肥物质科学研究院
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