Open AccessComplete presentation of the Gouy phase shift with the THz digital holography
Author(s) -
Xinke Wang,
Wenfeng Sun,
Yun Cui,
Jiasheng Ye,
Shengfei Feng,
Yan Zhang
Publication year - 2013
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.21.002337
Subject(s) - terahertz radiation , optics , holography , polarization (electrochemistry) , physics , digital holography , transverse plane , phase (matter) , terahertz spectroscopy and technology , chemistry , structural engineering , quantum mechanics , engineering
Three dimensional information of the Gouy phase shift in a converging spherical terahertz (THz) beam is directly observed by using a THz balanced electro-optic holographic imaging system. The major properties of the Gouy phase shift are presented, including the longitudinal and transverse distributions, relationships with the frequency and the f-number, influence on the THz polarization. The imaging technique supplies an accurate and comprehensive measurement method for observing and understanding the Gouy phase shift.