摘要
We propose a spatial diffraction diagnostic method via inserting a millimeter-gap double slit into the collimated terahertz beam to monitor the minute variation of the terahertz beam in strong-field terahertz sources,which is difficult to be resolved in conventional terahertz imaging systems.To verify the method,we intentionally fabricate tiny variations of the terahertz beam through tuning the iris for the infrared pumping beam before the tilted-pulse-front pumping setups.The phenomena can be well explained by the theory based on the tilted-pulse-front technique and terahertz diffraction.
作者
李尚卿
马景龙
吴晓君
张保龙
欧阳琛
王天泽
王丹
王瑄
李玉同
Shangqing Li;Jinglong Ma;Xiaojun Wu;Baolong Zhang;Chen Ouyang;Tianze Wang;Dan Wang;Xuan Wang;Yutong Li(Beijing National Laboratory for Condensed Matter Physics,Institute of Physics,Chinese Academy of Sciences,Beijing 100190,China〇;School of Physical Sciences,University of Chinese Academy of Sciences,Beijing 100049,China;School of Electronic and Information Engineering,Beihang University,Beijing 100191,China;Songshan Lake Materials Laboratory,Dongguan 523808,China;CAS Center for Excellence in Ultra-intense Laser Science,Shanghai 201800,China)
基金
the Science Challenge Project(No.TZ2016005)
the NationalNatural Science Foundation of China(Nos.11827807,61905007,11520101003,and 11861121001)
the Strategic Priority Research Programof the Chinese Academy of Sciences(No.XDB16010200)。
