This paper presents a digital holographic method for measurement of periodic asymmetric temperature fields. The method is based on a modified Twyman–Green setup having double sensitivity. For measurement only one precisely synchronized and triggered digital camera is used. The periodicity and self-similarity of each cycle of the measured phenomenon combined with the precisely synchronized camera capture allow one to obtain data later used for three-dimensional (3D) measurement. The reconstruction of 3D temperature field is based on tomographic approach.
© 2012 Optical Society of America
Original Manuscript: August 15, 2012
Revised Manuscript: October 13, 2012
Manuscript Accepted: October 29, 2012
Published: November 30, 2012
Roman Doleček, Pavel Psota, Vít Lédl, Tomáš Vít, Jan Václavík, and Václav Kopecký, "General temperature field measurement by digital holography," Appl. Opt. 52, A319-A325 (2013)