Abstract

Continuous-wave terahertz digital holography (TDH) is a booming full-field phase-contrast imaging method validated in both in-line and Mach–Zehnder off-axis geometries. In this Letter, a self-referencing TDH approach is proposed based on the Fresnel's mirrors, by which the object wavefront is partitioned and reflected. Two beams interfere with each other to form an off-axis hologram. The proposed recording configuration is immune from a superposed twin image and has higher temporal stability than Mach–Zehnder interferometers. To evaluate the phase-contrast imaging performance, different types of samples are measured.

© 2020 Optical Society of America

Low-coherence digital holography with a multireflection reference mirror

Quang Duc Pham and Yoshio Hayasaki
Opt. Lett. 45(16) 4393-4396 (2020)

Continuous-wave terahertz in-line digital holography

Kai Xue, Qi Li, Yun-Da Li, and Qi Wang
Opt. Lett. 37(15) 3228-3230 (2012)

Continuous-wave terahertz reflective ptychography by oblique illumination

Lu Rong, Chao Tang, Yuchen Zhao, Fangrui Tan, Yunxin Wang, Jie Zhao, Dayong Wang, and Marc Georges
Opt. Lett. 45(16) 4412-4415 (2020)

Continuous-wave terahertz digital holography by use of a pyroelectric array camera

Sheng-Hui Ding, Qi Li, Yun-Da Li, and Qi Wang
Opt. Lett. 36(11) 1993-1995 (2011)

Wide area quantitative phase microscopy by spatial phase scanning digital holography

Myung K. Kim
Opt. Lett. 45(3) 784-786 (2020)