Title :
Three-dimensional Characterisation of the Non-Gaussian Focused Beam from a Terahertz Quantum Cascade Laser
Author :
Dean, P. ; Shaukat, M.U. ; Linfield, E.H. ; Davies, A.G.
Author_Institution :
Univ. of Leeds, Leeds
Abstract :
A fast, accurate technique for the three-dimensional characterisation of terahertz beams is presented. Using gold-on-glass resolution targets the beam profile, depth of focus and astigmatism of a quantum cascade laser-based imaging system have been measured.
Keywords :
aberrations; optical focusing; quantum cascade lasers; submillimetre wave lasers; 3D characterisation; astigmatism; beam profile; focus depth; gold-on-glass resolution; non-Gaussian focused beam; quantum cascade laser-based imaging system; terahertz beams; terahertz quantum cascade laser; Biomedical optical imaging; Focusing; Frequency; Image resolution; Laser beams; Optical imaging; Optical sensors; Quantum cascade lasers; Sampling methods; Vision defects;
Conference_Titel :
Lasers and Electro-Optics, 2007. CLEO 2007. Conference on
Conference_Location :
Baltimore, MD
Print_ISBN :
978-1-55752-834-6
DOI :
10.1109/CLEO.2007.4453578
