Pub Date : 2021-01-07DOI: 10.11884/HPLPB202133.200257
Zhang Xue, Wang Tao, Yu Qianqian, Wang Yong
High-power waveguide window is a critical component of high-power klystron and accelerator. The RF breakdown of the waveguide window always cause the failure of the high-power klystron. In this paper, the research progress of high-power waveguide window in the international vacuum electronics field is introduced. The research status, manufacturing requirement, and RF breakdown mechanism of the classical pill-box window are presented at first. Then the characters of some new type waveguide windows such as the tapered window, travelling wave in ceramic window, mixed-mode window, and over-mode window are summarized. Some breakdown suppression technologies like changing the material character of the window disk, changing the surface configuration of the window disk, using the positive dielectric angle, applying DC electric field or DC magnetic field, changing the waveform of transverse electric field are emphasized at the end.
{"title":"Research progress of high-power waveguide window","authors":"Zhang Xue, Wang Tao, Yu Qianqian, Wang Yong","doi":"10.11884/HPLPB202133.200257","DOIUrl":"https://doi.org/10.11884/HPLPB202133.200257","url":null,"abstract":"High-power waveguide window is a critical component of high-power klystron and accelerator. The RF breakdown of the waveguide window always cause the failure of the high-power klystron. In this paper, the research progress of high-power waveguide window in the international vacuum electronics field is introduced. The research status, manufacturing requirement, and RF breakdown mechanism of the classical pill-box window are presented at first. Then the characters of some new type waveguide windows such as the tapered window, travelling wave in ceramic window, mixed-mode window, and over-mode window are summarized. Some breakdown suppression technologies like changing the material character of the window disk, changing the surface configuration of the window disk, using the positive dielectric angle, applying DC electric field or DC magnetic field, changing the waveform of transverse electric field are emphasized at the end.","PeriodicalId":39871,"journal":{"name":"强激光与粒子束","volume":"33 1","pages":"023001-1-023001-13"},"PeriodicalIF":0.0,"publicationDate":"2021-01-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43943986","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-01-07DOI: 10.11884/HPLPB202133.200309
Xi Xiaoming, Yang Huan, Zeng Lingfa, Huang Liangjin, Ye Yun, Zhang Hanwei, Pang Zhiyong, Wang Xiao-lin, Wang Zefeng, Zhou Pu, X. Xiaojun, Chen Jinbao
To enhance the thresholds of both stimulated Raman scattering and transverse mode instability, we proposed a novel active Yb-doped fiber with a spindle-shaped core and inner-cladding. An all-fiber main oscillator power amplifier (MOPA) was experimentally established based on this homemade fiber. A maximum power of 5 kW was achieved with the optical-to-optical efficiency of 66.6%, Raman-suppression ratio of ＞45 dB and M2 factor of about 2.0. We believe that the brightness and the efficiency of the laser can be improved by optimizing the structure of the Yb-doped fiber.
{"title":"5 kW all-fiber amplifier based on homemade spindle-shaped Yb-doped fiber","authors":"Xi Xiaoming, Yang Huan, Zeng Lingfa, Huang Liangjin, Ye Yun, Zhang Hanwei, Pang Zhiyong, Wang Xiao-lin, Wang Zefeng, Zhou Pu, X. Xiaojun, Chen Jinbao","doi":"10.11884/HPLPB202133.200309","DOIUrl":"https://doi.org/10.11884/HPLPB202133.200309","url":null,"abstract":"To enhance the thresholds of both stimulated Raman scattering and transverse mode instability, we proposed a novel active Yb-doped fiber with a spindle-shaped core and inner-cladding. An all-fiber main oscillator power amplifier (MOPA) was experimentally established based on this homemade fiber. A maximum power of 5 kW was achieved with the optical-to-optical efficiency of 66.6%, Raman-suppression ratio of ＞45 dB and M2 factor of about 2.0. We believe that the brightness and the efficiency of the laser can be improved by optimizing the structure of the Yb-doped fiber.","PeriodicalId":39871,"journal":{"name":"强激光与粒子束","volume":"33 1","pages":"021001-1-021001-3"},"PeriodicalIF":0.0,"publicationDate":"2021-01-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44699779","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-12-15DOI: 10.11884/HPLPB202032.200210
Lu Qiao, Mao Qinghe
Narrowband dissipative soliton mode-locked fiber lasers can produce transform-limited picosecond pulses. Unfortunately, due to the limitation of allowable nonlinear phase shift for the intracavity pulse, the repetition rate of the pulses generated by such lasers cannot be reduced by increasing the cavity length; the pulse energy is only below 0.1 nJ. These seriously restrict the practical application of such picosecond pulsed fiber lasers. In this paper, we propose a method that allows the cavity length to be increased to reduce the repetition rate of the narrowband dissipative soliton picosecond fiber laser pulses by extracting the pulse energy out of the cavity a coupler to suppress the accumulation of nonlinear phase shift of the intracavity pulses. Using this method, the laser repetition rate was successfully reduced from 35.2 MHz to 1.77 MHz, and the pulse time-frequency characteristics remained unchanged. We also propose a method to suppress spectral broadening in picosecond pulse fiber amplification based on inter-stage FBG notch filtering. By simply using the inter-stage notch filter, the output pulse spectrum width after the first-stage fiber amplifier can be narrowed, allowing the second-stage fiber amplifier to further increase the pulse energy, and also, the pulse can be reshaped to near Gaussian-shaped, allowing the second-stage fiber amplifier to increase the pulse energy higher by using the Gaussian pulse characteristics of the smaller spectral broadening slope. Using this method, on the premise of keeping the RMS spectral width within 0.4 nm, after a 10 ps pulse passes through a standard single-mode fiber amplifier, the pulse energy can be increased from 0.2 nJ to more than 10 nJ.
{"title":"Researches on two key frontier issues in picosecond pulses generated by mode-locked fiber lasers","authors":"Lu Qiao, Mao Qinghe","doi":"10.11884/HPLPB202032.200210","DOIUrl":"https://doi.org/10.11884/HPLPB202032.200210","url":null,"abstract":"Narrowband dissipative soliton mode-locked fiber lasers can produce transform-limited picosecond pulses. Unfortunately, due to the limitation of allowable nonlinear phase shift for the intracavity pulse, the repetition rate of the pulses generated by such lasers cannot be reduced by increasing the cavity length; the pulse energy is only below 0.1 nJ. These seriously restrict the practical application of such picosecond pulsed fiber lasers. In this paper, we propose a method that allows the cavity length to be increased to reduce the repetition rate of the narrowband dissipative soliton picosecond fiber laser pulses by extracting the pulse energy out of the cavity a coupler to suppress the accumulation of nonlinear phase shift of the intracavity pulses. Using this method, the laser repetition rate was successfully reduced from 35.2 MHz to 1.77 MHz, and the pulse time-frequency characteristics remained unchanged. We also propose a method to suppress spectral broadening in picosecond pulse fiber amplification based on inter-stage FBG notch filtering. By simply using the inter-stage notch filter, the output pulse spectrum width after the first-stage fiber amplifier can be narrowed, allowing the second-stage fiber amplifier to further increase the pulse energy, and also, the pulse can be reshaped to near Gaussian-shaped, allowing the second-stage fiber amplifier to increase the pulse energy higher by using the Gaussian pulse characteristics of the smaller spectral broadening slope. Using this method, on the premise of keeping the RMS spectral width within 0.4 nm, after a 10 ps pulse passes through a standard single-mode fiber amplifier, the pulse energy can be increased from 0.2 nJ to more than 10 nJ.","PeriodicalId":39871,"journal":{"name":"强激光与粒子束","volume":"32 1","pages":"1-15"},"PeriodicalIF":0.0,"publicationDate":"2020-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46157802","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-12-15DOI: 10.11884/HPLPB202032.200144
Chu Qiuhui, Guo Chao, Yan Donglin, Shu Qiang, Shi Yi, Wen Jing, Lin Hong-huan, Wang Jian-jun
In recent years, fiber laser has been developing rapidly, and gradually applied in many fields. Further improvement of output power is still the research hotspot of fiber laser. Beam combining is an important method to scale output power of fiber laser. Beam combining requires that the sub beam is a narrow linewidth fiber laser, so the research of narrow linewidth fiber laser is of great significance for power improvement. In this paper, the development and research status of narrow linewidth high power fiber lasers are introduced in detail, and based on the current research status, the future development trend is prospected.
{"title":"Recent progress of high power narrow linewidth fiber laser","authors":"Chu Qiuhui, Guo Chao, Yan Donglin, Shu Qiang, Shi Yi, Wen Jing, Lin Hong-huan, Wang Jian-jun","doi":"10.11884/HPLPB202032.200144","DOIUrl":"https://doi.org/10.11884/HPLPB202032.200144","url":null,"abstract":"In recent years, fiber laser has been developing rapidly, and gradually applied in many fields. Further improvement of output power is still the research hotspot of fiber laser. Beam combining is an important method to scale output power of fiber laser. Beam combining requires that the sub beam is a narrow linewidth fiber laser, so the research of narrow linewidth fiber laser is of great significance for power improvement. In this paper, the development and research status of narrow linewidth high power fiber lasers are introduced in detail, and based on the current research status, the future development trend is prospected.","PeriodicalId":39871,"journal":{"name":"强激光与粒子束","volume":"32 1","pages":"121004-1-121004-13"},"PeriodicalIF":0.0,"publicationDate":"2020-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47690645","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-12-15DOI: 10.11884/HPLPB202032.200236
M. Xiaoyu, Zhang Naling, Zhong Li, Liu Suping, Jing Hongqi
High power semiconductor lasers are the main pump source for solid-state lasers and fiber lasers. The improvement in the performance of laser pump sources directly promotes the development of solid-state lasers, fiber lasers and other lasers. The article introduces the latest research progress of 8xx nm and 9xx nm semiconductor laser pump sources. The output power research level of 8xx nm single-emitter laser has reached 18.8 W@95 µm, the output power research level of 8xx nm laser bar has reached 1.8 kW(QCW), the output power research level of 9xx nm single-emitter laser has reached 35 W@100 µm, the output power research level of 9xx nm laser bar has reached 1.98 kW(QCW). The output power of a narrow linewidth semiconductor laser with a linewidth ＜1 nm can reach 14 W. The development trend of semiconductor laser pump source in the future is forecasted.
{"title":"Research progress of high power semiconductor laser pump source","authors":"M. Xiaoyu, Zhang Naling, Zhong Li, Liu Suping, Jing Hongqi","doi":"10.11884/HPLPB202032.200236","DOIUrl":"https://doi.org/10.11884/HPLPB202032.200236","url":null,"abstract":"High power semiconductor lasers are the main pump source for solid-state lasers and fiber lasers. The improvement in the performance of laser pump sources directly promotes the development of solid-state lasers, fiber lasers and other lasers. The article introduces the latest research progress of 8xx nm and 9xx nm semiconductor laser pump sources. The output power research level of 8xx nm single-emitter laser has reached 18.8 W@95 µm, the output power research level of 8xx nm laser bar has reached 1.8 kW(QCW), the output power research level of 9xx nm single-emitter laser has reached 35 W@100 µm, the output power research level of 9xx nm laser bar has reached 1.98 kW(QCW). The output power of a narrow linewidth semiconductor laser with a linewidth ＜1 nm can reach 14 W. The development trend of semiconductor laser pump source in the future is forecasted.","PeriodicalId":39871,"journal":{"name":"强激光与粒子束","volume":"32 1","pages":"121010-1-121010-10"},"PeriodicalIF":0.0,"publicationDate":"2020-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45950051","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-12-15DOI: 10.11884/HPLPB202032.200180
Wang Jian-jun, Liu Yu, Li Min, Feng Xi, Chu Qiuhui, Zhang Chun, G. Cong, Tao Rumao, Lin Hong-huan, Jing Feng
The report about mode instability in 2010 has begun the history of struggling with the waste heat in fiber lasers. This paper presents a 10-year research progress of mode instability research, including physical demonstrations, physical mechanism, theoretical investigation, various impact factors and effective mitigating strategies. The most recent results on mode instability suppressing are also included as well as the future development trend of mode instability research.
{"title":"Ten-year review and prospect on mode instability research of fiber lasers","authors":"Wang Jian-jun, Liu Yu, Li Min, Feng Xi, Chu Qiuhui, Zhang Chun, G. Cong, Tao Rumao, Lin Hong-huan, Jing Feng","doi":"10.11884/HPLPB202032.200180","DOIUrl":"https://doi.org/10.11884/HPLPB202032.200180","url":null,"abstract":"The report about mode instability in 2010 has begun the history of struggling with the waste heat in fiber lasers. This paper presents a 10-year research progress of mode instability research, including physical demonstrations, physical mechanism, theoretical investigation, various impact factors and effective mitigating strategies. The most recent results on mode instability suppressing are also included as well as the future development trend of mode instability research.","PeriodicalId":39871,"journal":{"name":"强激光与粒子束","volume":"32 1","pages":"121003-1-121003-12"},"PeriodicalIF":0.0,"publicationDate":"2020-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42737727","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-11-19DOI: 10.11884/HPLPB202032.200186
Lai Wenchang, M. Pengfei, Xiao Hu, Liu-Ying Wei, Li Can, Jiang Man, Xu Jiangming, Su Rong-Tao, Leng Jinyong, Ma Yan-xing, Zhou Pu
In this paper, the research progress of single-frequency fiber oscillators are introduced in the terms of wavelength expansion, the development of single frequency fiber amplifiers are introduced in the terms of power scaling. Besides, the research achievements of 1 μm-band high-power narrow-linewidth fiber laser are summarized based on the techniques of generating narrow-linewidth seed sources. Then the development trend and main challenges of high-power single-frequency and narrow-linewidth fiber laser are analyzed. The key technologies of high-power narrow-linewidth fiber laser are summarized and discussed. Finally, applications in various fields based on the current development status of high-power narrow-linewidth fiber laser are introduced.
{"title":"High-power narrow-linewidth fiber laser technology","authors":"Lai Wenchang, M. Pengfei, Xiao Hu, Liu-Ying Wei, Li Can, Jiang Man, Xu Jiangming, Su Rong-Tao, Leng Jinyong, Ma Yan-xing, Zhou Pu","doi":"10.11884/HPLPB202032.200186","DOIUrl":"https://doi.org/10.11884/HPLPB202032.200186","url":null,"abstract":"In this paper, the research progress of single-frequency fiber oscillators are introduced in the terms of wavelength expansion, the development of single frequency fiber amplifiers are introduced in the terms of power scaling. Besides, the research achievements of 1 μm-band high-power narrow-linewidth fiber laser are summarized based on the techniques of generating narrow-linewidth seed sources. Then the development trend and main challenges of high-power single-frequency and narrow-linewidth fiber laser are analyzed. The key technologies of high-power narrow-linewidth fiber laser are summarized and discussed. Finally, applications in various fields based on the current development status of high-power narrow-linewidth fiber laser are introduced.","PeriodicalId":39871,"journal":{"name":"强激光与粒子束","volume":"32 1","pages":"121001-1-121001-22"},"PeriodicalIF":0.0,"publicationDate":"2020-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47313706","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-11-19DOI: 10.11884/HPLPB202133.200125
Yü Shihan, L. Xiaofeng, Weng Su-Ming, Zhao Yao, Ma Hanghang, Chen Min, Sheng Zheng-Ming
The issue of laser plasma instabilities (LPIs) including stimulated Raman scattering, stimulated Brillouin scattering and so on is one of the most fascinating subjects in laser plasma physics. In particular, LPIs may cause significant laser energy loss and produce hot electrons to preheat fusion targets, which affect target compression and fusion energy gain in laser-driven inertial confinement fusion. Recent experiments carried out on the National Ignition Facility, the largest laser facility in the world for laser fusion, indicate that the understanding and the control of LPIs are essential to the realization of laser fusion. In this paper, we present a review on recent studies of LPIs. Firstly, we retrospect the classical theoretical model of LPIs, which offers a good estimation of growth rate in the linear development stage. Then, we discuss some progresses on the understanding of LPIs in more complex and real scenarios, such as LPI development in the nonlinear regions, cascaded LPIs, multi-beam LPIs, and nonlinear couplings between LPIs. Following the exploration of LPI physics, we emphasize on the strategies for the control of LPIs, including beam smoothing techniques, temporal profile shaping, broadband laser, laser polarization rotation, external magnetic field and so on.
{"title":"Laser plasma instabilities and their suppression strategies","authors":"Yü Shihan, L. Xiaofeng, Weng Su-Ming, Zhao Yao, Ma Hanghang, Chen Min, Sheng Zheng-Ming","doi":"10.11884/HPLPB202133.200125","DOIUrl":"https://doi.org/10.11884/HPLPB202133.200125","url":null,"abstract":"The issue of laser plasma instabilities (LPIs) including stimulated Raman scattering, stimulated Brillouin scattering and so on is one of the most fascinating subjects in laser plasma physics. In particular, LPIs may cause significant laser energy loss and produce hot electrons to preheat fusion targets, which affect target compression and fusion energy gain in laser-driven inertial confinement fusion. Recent experiments carried out on the National Ignition Facility, the largest laser facility in the world for laser fusion, indicate that the understanding and the control of LPIs are essential to the realization of laser fusion. In this paper, we present a review on recent studies of LPIs. Firstly, we retrospect the classical theoretical model of LPIs, which offers a good estimation of growth rate in the linear development stage. Then, we discuss some progresses on the understanding of LPIs in more complex and real scenarios, such as LPI development in the nonlinear regions, cascaded LPIs, multi-beam LPIs, and nonlinear couplings between LPIs. Following the exploration of LPI physics, we emphasize on the strategies for the control of LPIs, including beam smoothing techniques, temporal profile shaping, broadband laser, laser polarization rotation, external magnetic field and so on.","PeriodicalId":39871,"journal":{"name":"强激光与粒子束","volume":"33 1","pages":"012006-1-012006-17"},"PeriodicalIF":0.0,"publicationDate":"2020-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47400895","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-11-19DOI: 10.11884/HPLPB202032.200185
Gao Qingsong, Zhou Tangjian, Shang Jianli, Wang Dan, L. Mi, Wu Yingchen, Wang Juntao, Wang Ya’nan, Xu Liu, Du Yinglei, Chen Xiaoming, Zhang Kai, Tang Chun
This paper presents the research progress of high efficiency and compact all-solid-state lasers based on Yb:YAG slab at room temperature. The laser dynamics model of Yb slab at room temperature is established. It is quantitatively analysed that the pumped laser intensity and the injected laser brightness influence the optical conversion efficiency. The method to suppress the slab-edge-effect is founded. The output power of 22.3 kW, the optical conversion efficiency of 36%, and the beam quality of 2.4 times diffraction limit, were achieved in experiment. These results lay a foundation for the key technology research of higher power laser and development of the miniaturized, lightweight and practical high power Yb slab laser.
{"title":"High efficiency and compact Yb:YAG slab all-solid-state laser at room temperature","authors":"Gao Qingsong, Zhou Tangjian, Shang Jianli, Wang Dan, L. Mi, Wu Yingchen, Wang Juntao, Wang Ya’nan, Xu Liu, Du Yinglei, Chen Xiaoming, Zhang Kai, Tang Chun","doi":"10.11884/HPLPB202032.200185","DOIUrl":"https://doi.org/10.11884/HPLPB202032.200185","url":null,"abstract":"This paper presents the research progress of high efficiency and compact all-solid-state lasers based on Yb:YAG slab at room temperature. The laser dynamics model of Yb slab at room temperature is established. It is quantitatively analysed that the pumped laser intensity and the injected laser brightness influence the optical conversion efficiency. The method to suppress the slab-edge-effect is founded. The output power of 22.3 kW, the optical conversion efficiency of 36%, and the beam quality of 2.4 times diffraction limit, were achieved in experiment. These results lay a foundation for the key technology research of higher power laser and development of the miniaturized, lightweight and practical high power Yb slab laser.","PeriodicalId":39871,"journal":{"name":"强激光与粒子束","volume":"32 1","pages":"121009-1-121009-5"},"PeriodicalIF":0.0,"publicationDate":"2020-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48968882","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-11-15DOI: 10.11884/HPLPB202032.200129
S. Ao, Shang Wan-li, Yang Guo-hong, Wei Minxi, L. Miao, Che Xingsen, Hou Lifei, Du Hua-bing, Yang Yimeng, Zhang Wen-hai, Yang Dong, Wang Feng, He Haien, Yang Jia-min, Jiang Shao－en, Zhang Bao-Han, Ding Yong-kun
This paper introduces the relationship between X-ray line emission diagnosis and various physical quantities in the study of inertial confinement fusion, and briefly explains the diagnosis method and principle of X-ray crystal spectrometer. For different types of diagnosis, it introduces the functions and principles of different commonly used types of diffraction crystals. In addition, it introduces a new type of X-ray diagnostic method of multi-cone curved crystals, which has high light collection efficiency and at the same time ensures the delicate coupling of the back-end receiving device and reduces aberrations. Based on the study of the diffraction characteristics of the multi-cone curved crystal, X-Chase, an X-ray arbitrary surface crystal diffraction tracking simulation software, was developed. At the same time, the multi-cone crystal of H and He line emissions on the SG laser facility is utilized to demonstrate the code functions. The numerical simulation results show that the variable cone crystal has a good focusing ability.
{"title":"Study on X-ray line emission diffraction in inertial confinement fusion and its recent progress","authors":"S. Ao, Shang Wan-li, Yang Guo-hong, Wei Minxi, L. Miao, Che Xingsen, Hou Lifei, Du Hua-bing, Yang Yimeng, Zhang Wen-hai, Yang Dong, Wang Feng, He Haien, Yang Jia-min, Jiang Shao－en, Zhang Bao-Han, Ding Yong-kun","doi":"10.11884/HPLPB202032.200129","DOIUrl":"https://doi.org/10.11884/HPLPB202032.200129","url":null,"abstract":"This paper introduces the relationship between X-ray line emission diagnosis and various physical quantities in the study of inertial confinement fusion, and briefly explains the diagnosis method and principle of X-ray crystal spectrometer. For different types of diagnosis, it introduces the functions and principles of different commonly used types of diffraction crystals. In addition, it introduces a new type of X-ray diagnostic method of multi-cone curved crystals, which has high light collection efficiency and at the same time ensures the delicate coupling of the back-end receiving device and reduces aberrations. Based on the study of the diffraction characteristics of the multi-cone curved crystal, X-Chase, an X-ray arbitrary surface crystal diffraction tracking simulation software, was developed. At the same time, the multi-cone crystal of H and He line emissions on the SG laser facility is utilized to demonstrate the code functions. The numerical simulation results show that the variable cone crystal has a good focusing ability.","PeriodicalId":39871,"journal":{"name":"强激光与粒子束","volume":"32 1","pages":"112008-1-112008-9"},"PeriodicalIF":0.0,"publicationDate":"2020-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42090110","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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