Influence of raster scan parameters on the image quality for the THz phase imaging in collimated beam with a wide aperture

1st International Scientific School on Methods of Digital Image Processing in Optics and Photonics

物理学;计算机科学

Kulya, M.S.^1 ; Petrov, N.V.^1 ; Tcypkin, A.N.^1 ; Bespalov, V.G.^1

Saint Petersburg National Research University of Information Technologies, Mechanics and Optics, Kronverkskiy pr. 49, St.Petersburg

197101, Russia^1

关键词: Collimated beams;    Phase imaging;    Quality of reconstructed images;    Reconstructed objects;    Scanning time;    Spatial resolution;    Terahertz pulse;    Terahertz radiation;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/536/1/012010/pdf
DOI  :  10.1088/1742-6596/536/1/012010

学科分类：计算机科学（综合）

来源: IOP

【 摘 要 】

We numerically investigated the influence of wavelength of terahertz radiation and size of scanning pinhole on the quality of reconstructed image by terahertz pulse time domain holography method. The improvement of the quality is achieved mainly by reducing the wavelength of the radiation, pinhole size and pinhole step (value of the pinhole displacement at each step) affect the spatial resolution of the reconstructed object and significantly affect the scanning time. However, pinhole does not significantly affect the quality only if pinhole size is not less than used wavelength.