High Power Laser Science and Engineering最新文献

{"title":"Efficient dual-stage all-solid-state post-compression for 100 W level ultrafast lasers","authors":"Zichen Gao, Jie Guo, Yongxi Gao, Yuguang Huang, Zhihua Tu, Xiaoyan Liang","doi":"10.1017/hpl.2024.26","DOIUrl":"https://doi.org/10.1017/hpl.2024.26","url":null,"abstract":"<p>We demonstrate efficient and economical all-solid-state post-compression based on dual-stage periodically placed thin fused silica plates driven by a more than 100 W ytterbium-doped yttrium aluminum garnet Innoslab amplifier seeded by a fiber frontend. Not only is a more than eight-fold pulse compression with 94% transmission achieved, but also the pulse quality and spatial mode are improved, which can be attributed to the compensation for the residual high-order dispersion and the spatial mode self-cleaning effect during the nonlinear process. It enables a high-power ultrafast laser source with 64 fs pulse duration, 96 W average power at 175 kHz repetition rates and good spatiotemporal quality. These results highlight that this all-solid-state post-compression can overcome the bandwidth limitation of Yb-based lasers with exceptional efficiency and mitigate the spatiotemporal degradation originating from the Innoslab amplifier and fiber frontend, which provides an efficient and economical complement for the Innoslab laser system and facilitates this robust and compact combination as a promising scheme for high-quality higher-power few-cycle laser generation.</p>","PeriodicalId":54285,"journal":{"name":"High Power Laser Science and Engineering","volume":"1 1","pages":""},"PeriodicalIF":4.8,"publicationDate":"2024-08-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142268150","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Compression and acceleration processes of spherical shells in gold cones","authors":"Huigang Wei, Dawei Yuan, Shaojun Wang, Ye Cui, Xiaohu Yang, Yanyun Ma, Zhe Zhang, Xiaohui Yuan, Jiayong Zhong, Neng Hua, Yutong Li, Jianqiang Zhu, Gang Zhao, Jie Zhang","doi":"10.1017/hpl.2024.24","DOIUrl":"https://doi.org/10.1017/hpl.2024.24","url":null,"abstract":"<p>Double-cone ignition [Zhang <span>et al.</span>, Phil. Trans. R. Soc. A 378, 20200015 (2020)] was proposed recently as a novel path for direct-drive inertial confinement fusion using high-power lasers. In this scheme, plasma jets with both high density and high velocity are required for collisions. Here we report preliminary experimental results obtained at the Shenguang-II upgrade laser facility, employing a CHCl shell in a gold cone irradiated with a two-ramp laser pulse. The CHCl shell was pre-compressed by the first laser ramp to a density of 3.75 g/cm<span>3</span> along the isentropic path. Subsequently, the target was further compressed and accelerated by the second laser ramp in the cone. According to the simulations, the plasma jet reached a density of up to 15 g/cm<span>3</span>, while measurements indicated a velocity of 126.8 ± 17.1 km/s. The good agreements between experimental data and simulations are documented.</p>","PeriodicalId":54285,"journal":{"name":"High Power Laser Science and Engineering","volume":"21 1","pages":""},"PeriodicalIF":4.8,"publicationDate":"2024-04-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142247549","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Precise mode control of mid-infrared high-power laser diodes using on-chip advanced sawtooth waveguide designs","authors":"Jianmei Shi, Chengao Yang, Yihang Chen, Tianfang Wang, Hongguang Yu, Juntian Cao, Zhengqi Geng, Zhiyuan Wang, Haoran Wen, Hao Tan, Yu Zhang, Dongwei Jiang, Donghai Wu, Yingqiang Xu, Haiqiao Ni, Zhichuan Niu","doi":"10.1017/hpl.2024.23","DOIUrl":"https://doi.org/10.1017/hpl.2024.23","url":null,"abstract":"<p>Power scaling in conventional broad-area (BA) lasers often leads to the operation of higher-order lateral modes, resulting in a multiple-lobe far-field profile with large divergence. Here, we report an advanced sawtooth waveguide (ASW) structure integrated onto a wide ridge waveguide. It strategically enhances the loss difference between higher-order modes and the fundamental mode, thereby facilitating high-power narrow-beam emission. Both optical simulations and experimental results illustrate the significant increase in additional scattering loss of the higher-order modes. The optimized ASW lasers achieve an impressive output power of 1.1 W at 4.6 A at room temperature, accompanied by a minimal full width at half maximum lateral divergence angle of 4.91°. Notably, the far-field divergence is reduced from 19.61° to 11.39° at the saturation current, showcasing a remarkable 42% improvement compared to conventional BA lasers. Moreover, the current dependence of divergence has been effectively improved by 38%, further confirming the consistent and effective lateral mode control capability offered by our design.</p>","PeriodicalId":54285,"journal":{"name":"High Power Laser Science and Engineering","volume":"14 1","pages":""},"PeriodicalIF":4.8,"publicationDate":"2024-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142247527","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Design and optimization methods towards a 10 kW high beam quality fiber laser based on the counter tandem pumping scheme","authors":"Ruixian Li, Hanshuo Wu, Hu Xiao, Zilun Chen, Jinyong Leng, Liangjin Huang, Zhiyong Pan, Pu Zhou","doi":"10.1017/hpl.2024.21","DOIUrl":"https://doi.org/10.1017/hpl.2024.21","url":null,"abstract":"<p>In this study, we investigated the influence of fiber parameters on stimulated Raman scattering (SRS) and identified a unique pattern of SRS evolution in the counter tandem pumping configuration. Our findings revealed that the SRS threshold in counter-pumping is predominantly determined by the length of the output delivery fiber rather than the gain fiber. By employing the counter tandem pumping scheme and optimizing the fiber parameters, a 10 kW fiber laser was achieved with beam quality <span>M<span>2</span></span> of 1.92. No mode instability or severe SRS limitation was observed. To our knowledge, this study achieved the highest beam quality in over 10 kW fiber lasers based on conventional double-clad Yb-doped fiber.</p>","PeriodicalId":54285,"journal":{"name":"High Power Laser Science and Engineering","volume":"59 1","pages":""},"PeriodicalIF":4.8,"publicationDate":"2024-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142213626","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"New grating compressor designs for XCELS and SEL-100 PW projects","authors":"Efim Khazanov","doi":"10.1017/hpl.2024.18","DOIUrl":"https://doi.org/10.1017/hpl.2024.18","url":null,"abstract":"<p>The problem of optimizing the parameters of a laser pulse compressor consisting of four identical diffraction gratings is solved analytically. The goal of optimization is to obtain maximum pulse power, completely excluding both beam clipping on gratings and the appearance of spurious diffraction orders. The analysis is carried out in a general form for an out-of-plane compressor. Two particular ‘plane’ cases attractive from a practical point of view are analyzed in more detail: a standard Treacy compressor (TC) and a compressor with an angle of incidence equal to the Littrow angle (LC). It is shown that in both cases the LC is superior to the TC. Specifically, for 160-cm diffraction gratings, optimal LC design enables 107 PW for XCELS and 111 PW for SEL-100 PW, while optimal TC design enables 86 PW for both projects.</p>","PeriodicalId":54285,"journal":{"name":"High Power Laser Science and Engineering","volume":"117 1","pages":""},"PeriodicalIF":4.8,"publicationDate":"2024-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142213646","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"High-repetition-rate source of nanosecond duration kA-current pulses driven by relativistic laser pulses","authors":"Michael Ehret, Jakub Cikhardt, Philip Wykeham Bradford, Iuliana-Mariana Vladisavlevici, Tomas Burian, Diego de Luis, Jose Luis Henares, Rubén Hernández Martín, Jon Imanol Apiñaniz, Roberto Lera, José Antonio Pérez-Hernández, João Jorge Santos, Giancarlo Gatti","doi":"10.1017/hpl.2024.14","DOIUrl":"https://doi.org/10.1017/hpl.2024.14","url":null,"abstract":"<p>We report the first high-repetition-rate generation and simultaneous characterization of nanosecond-scale return currents of kA-magnitude issued by the polarization of a target irradiated with a PW-class high-repetition-rate titanium:sapphire laser system at relativistic intensities. We present experimental results obtained with the VEGA-3 laser at intensities from <span><span><img data-mimesubtype=\"png\" data-type=\"\" src=\"https://static.cambridge.org/binary/version/id/urn:cambridge.org:id:binary:20240819071321735-0753:S2095471924000148:S2095471924000148_inline1.png\"><span data-mathjax-type=\"texmath\"><span>$5times {10}^{18}$</span></span></img></span></span> to <span><span><img data-mimesubtype=\"png\" data-type=\"\" src=\"https://static.cambridge.org/binary/version/id/urn:cambridge.org:id:binary:20240819071321735-0753:S2095471924000148:S2095471924000148_inline2.png\"><span data-mathjax-type=\"texmath\"><span>$1.3times {10}^{20}$</span></span></img></span></span> W cm<span><span><img data-mimesubtype=\"png\" data-type=\"\" src=\"https://static.cambridge.org/binary/version/id/urn:cambridge.org:id:binary:20240819071321735-0753:S2095471924000148:S2095471924000148_inline3.png\"><span data-mathjax-type=\"texmath\"><span>${}^{-2}$</span></span></img></span></span>. A non-invasive inductive return-current monitor is adopted to measure the derivative of return currents of the order of kA ns<span><span><img data-mimesubtype=\"png\" data-type=\"\" src=\"https://static.cambridge.org/binary/version/id/urn:cambridge.org:id:binary:20240819071321735-0753:S2095471924000148:S2095471924000148_inline4.png\"><span data-mathjax-type=\"texmath\"><span>${}^{-1}$</span></span></img></span></span> and analysis methodology is developed to derive return currents. We compare the current for copper, aluminium and Kapton targets at different laser energies. The data show the stable production of current peaks and clear prospects for the tailoring of the pulse shape, which is promising for future applications in high-energy-density science, for example, electromagnetic interference stress tests, high-voltage pulse response measurements and charged particle beam lensing. We compare the target discharge of the order of hundreds of nC with theoretical predictions and a good agreement is found.</p>","PeriodicalId":54285,"journal":{"name":"High Power Laser Science and Engineering","volume":"10 1","pages":""},"PeriodicalIF":4.8,"publicationDate":"2024-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142213627","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Generation of polarized electron beams through self-injection in the interaction of a laser with a pre-polarized plasma","authors":"L. R. Yin, X. F. Li, Y. J. Gu, N. Cao, Q. Kong, M. Büscher, S. M. Weng, M. Chen, Z. M. Sheng","doi":"10.1017/hpl.2024.7","DOIUrl":"https://doi.org/10.1017/hpl.2024.7","url":null,"abstract":"<p>Polarized electron beam production via laser wakefield acceleration in pre-polarized plasma is investigated by particle-in-cell simulations. The evolution of the electron beam polarization is studied based on the Thomas–Bargmann–Michel–Telegdi equation for the transverse and longitudinal self-injection, and the depolarization process is found to be influenced by the injection schemes. In the case of transverse self-injection, as found typically in the bubble regime, the spin precession of the accelerated electrons is mainly influenced by the wakefield. However, in the case of longitudinal injection in the quasi-1D regime (for example, F. Y. Li <span>et al</span>., Phys. Rev. Lett. 110, 135002 (2013)), the direction of electron spin oscillates in the laser field. Since the electrons move around the laser axis, the net influence of the laser field is nearly zero and the contribution of the wakefield can be ignored. Finally, an ultra-short electron beam with polarization of <span><span><img data-mimesubtype=\"png\" data-type=\"\" src=\"https://static.cambridge.org/binary/version/id/urn:cambridge.org:id:binary:20240819071231704-0444:S2095471924000070:S2095471924000070_inline1.png\"><span data-mathjax-type=\"texmath\"><span>$99%$</span></span></img></span></span> can be obtained using longitudinal self-injection.</p>","PeriodicalId":54285,"journal":{"name":"High Power Laser Science and Engineering","volume":"2020 1","pages":""},"PeriodicalIF":4.8,"publicationDate":"2024-02-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142213643","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Generation of millijoule-level sub-5fs violet laser pulses","authors":"Xinhua Xie, Yi Hung, Yunpei Deng, Adrian L. Cavalieri, A. Baltuška, Steven L. Johnson","doi":"10.1017/hpl.2023.100","DOIUrl":"https://doi.org/10.1017/hpl.2023.100","url":null,"abstract":"","PeriodicalId":54285,"journal":{"name":"High Power Laser Science and Engineering","volume":"78 15","pages":""},"PeriodicalIF":4.8,"publicationDate":"2023-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138945520","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Distortions in focusing laser pulses due to spatio-temporal couplings–An analytic description","authors":"K. Steiniger, Fabia Dietrich, D. Albach, M. Bussmann, A. Irman, M. Loeser, R. Pausch, T. Püschel, Roland Sauerbrey, S. Schöbel, Ulrich Schramm, Mathias Siebold, K. Zeil, A. Debus","doi":"10.1017/hpl.2023.96","DOIUrl":"https://doi.org/10.1017/hpl.2023.96","url":null,"abstract":"","PeriodicalId":54285,"journal":{"name":"High Power Laser Science and Engineering","volume":"46 2","pages":""},"PeriodicalIF":4.8,"publicationDate":"2023-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138965261","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"High-repetition-rate and High-power Efficient Picosecond Thin-disk Regenerative Amplifier","authors":"Sizhi Xu, Yubo Gao, Xing Liu, Yewang Chen, D. Ouyang, Junqing Zhao, Minqiu Liu, Xu Wu, C. Guo, Cangtao Zhou, Qitao Lve, Shuangchen Ruan","doi":"10.1017/hpl.2023.97","DOIUrl":"https://doi.org/10.1017/hpl.2023.97","url":null,"abstract":"","PeriodicalId":54285,"journal":{"name":"High Power Laser Science and Engineering","volume":"28 6","pages":""},"PeriodicalIF":4.8,"publicationDate":"2023-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138997456","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}