Title :
Beam waist measurement for terahertz time domain experiments
Author :
Gallot, G. ; Podzorov, A. ; Wojdyla, A.
Author_Institution :
Lab. for Opt. & Biosci., Ecole Polytech., Palaiseau, France
Abstract :
Classical variable aperture masking method is not directly applicable to Time Domain Spectroscopy (TDS) experiments. Here, we present a simple and reliable method for measuring beam waists in TDS. It is based on the successive diffraction by an opaque disk followed by a small circular aperture.
Keywords :
electromagnetic wave diffraction; submillimetre wave measurement; terahertz spectroscopy; terahertz wave detectors; TDS; THz beam characterization; THz detector; beam waist measurement; circular aperture; opaque disk; successive diffraction; terahertz time domain spectroscopy; Apertures; Biomedical optical imaging; Electromagnetic measurements; Laboratories; Optical detectors; Optical diffraction; Spectroscopy; Submillimeter wave measurements; Time measurement; Wavelength measurement;
Conference_Titel :
Infrared, Millimeter, and Terahertz Waves, 2009. IRMMW-THz 2009. 34th International Conference on
Conference_Location :
Busan
Print_ISBN :
978-1-4244-5416-7
Electronic_ISBN :
978-1-4244-5417-4
DOI :
10.1109/ICIMW.2009.5325575
