Abstract
Here, we present a comprehensive study of the reconstruction quality in terahertz (THz) pulse time-domain holography. We look into single wavelength reconstructions, as well as broadband recovery enabled by the ultrabroadband nature of radiation and coherent detection enabled by electro-optic or photoconductive sensing. We demonstrate the transverse resolution dependence for amplitude and phase objects on the solid angle of the inline recorded time-domain THz hologram, and then turn to the contrast of reconstructed binary amplitude objects, and further to longitudinal resolution of phase objects. We show that transverse resolution can reach values comparable to the wavelength of the radiation used, and longitudinally, phase objects can be resolved with even greater precision. We compare the obtained resolution with theoretical estimates and show that THz pulse time-domain holography is a powerful non-contact imaging tool.
© 2019 Optical Society of America
Full Article | PDF ArticleMore Like This
Maksim Kulya, Nikolay V. Petrov, Anton Tsypkin, Karen Egiazarian, and Vladimir Katkovnik
Opt. Express 27(13) 18456-18476 (2019)
Maksim Kulya, Nikolay V. Petrov, Vladimir Katkovnik, and Karen Egiazarian
Appl. Opt. 58(34) G61-G70 (2019)
Zeyu Li, Ruijiao Zou, Weipeng Kong, Xuemin Wang, Qinghua Deng, Qiang Yan, Yu Qin, Weidong Wu, and Xun Zhou
Photon. Res. 7(12) 1391-1399 (2019)