Broadband ptychographic imaging with an accurately sampled spectrum

Liu, Ruifan1,2; Cao, Wei1,2; You, Qijun1,2; Gao, Yun1,2; Zhang, Fucai3; Liao, Qing4; Lu, Peixiang1,2,5

2023-03-20

10.1103/PhysRevA.107.033510

PHYSICAL REVIEW A   Impact Factor & Quartile

2469-9926

2469-9934

Ptychography, a lensless imaging technology with large field of view (FOV), has been extensively developed in the past decades. However, the demanding coherence of the light source restrains its application in the field of ultrafast imaging, as short light pulses have broad spectral bandwidth and thus poor temporal coherence. Here, we demonstrated the implementation of ultrafast imaging with large FOV by monochromatizing the polychromatic ptychographic diffraction patterns. This scheme relaxes the requirement of bandwidth and successfully realizes the millimeter-scale FOV imaging using ultrashort pulses, while maintaining the good spatial resolution of the order of diffraction limit. Due to the use of a precisely sampled spectrum, the illumination information can be accurately captured allowing more reliable imaging process. Experimental results show that satisfactory spatial resolution can still be achieved even for a relative bandwidth up to 20%. Our work demonstrates the potential of ultrafast diffraction imaging with a large FOV.

SCI

English

Others

National Natural Science Foundation of China["12274158","12021004","12074167","11775105"] ; Wuhan Institute of Technology[202101]

Optics ; Physics

Optics ; Physics, Atomic, Molecular & Chemical

WOS:000957111200006

AMER PHYSICAL SOC

PHYSICS

Web of Science

1.Huazhong Univ Sci & Technol, Sch Phys, Wuhan 430074, Peoples R China
2.Huazhong Univ Sci & Technol, Wuhan Natl Lab Optoelect, Wuhan 430074, Peoples R China
3.Southern Univ Sci & Technol, Dept Elect & Elect Engn, Shenzhen 518055, Peoples R China
4.Wuhan Inst Technol, Hubei Key Lab Opt Informat & Pattern Recognit, Wuhan 430205, Peoples R China
5.Opt Valley Lab, Wuhan 430074, Peoples R China

Liu, Ruifan,Cao, Wei,You, Qijun,et al. Broadband ptychographic imaging with an accurately sampled spectrum[J]. PHYSICAL REVIEW A,2023,107(3).

Liu, Ruifan.,Cao, Wei.,You, Qijun.,Gao, Yun.,Zhang, Fucai.,...&Lu, Peixiang.(2023).Broadband ptychographic imaging with an accurately sampled spectrum.PHYSICAL REVIEW A,107(3).

Liu, Ruifan,et al."Broadband ptychographic imaging with an accurately sampled spectrum".PHYSICAL REVIEW A 107.3(2023).