title: Misalignment Effects in Laser-Induced Grating Experiments.
abstract: Laser-induced grating spectroscopy (LIGS) is an experimental method in which two pulsed laser beams and a continuous-wave laser beam have to be superimposed under well-defined angles to generate a coherent signal beam. In this Note, the possible effects of different forms of misalignment are examined. This includes the overlap of the pump lasers as well as the influence of the probe laser alignment on the temporal profile of the signal.
authors.affiliation: Technische Thermodynamik, Universität Bremen, Germany jkiefer@uni-bremen.de.|School of Engineering, University of Aberdeen, UK.|Erlangen School in Advanced Optical Technologies (SAOT), Universität Erlangen-Nürnberg, Germany.
authors.forename: Johannes
authors.initials: J
authors.lastname: Kiefer
authors.affiliation: Division of Combustion Physics, Lund University, Sweden.
authors.forename: Anna-Lena
authors.initials: AL
authors.lastname: Sahlberg
authors.affiliation: Division of Combustion Physics, Lund University, Sweden.
authors.forename: Dina
authors.initials: D
authors.lastname: Hot
authors.affiliation: Division of Combustion Physics, Lund University, Sweden.
authors.forename: Marcus
authors.initials: M
authors.lastname: Aldén
authors.affiliation: Division of Combustion Physics, Lund University, Sweden.
authors.forename: Zhongshan
authors.initials: Z
authors.lastname: Li
keywords: LIGS; Laser-induced grating; interference pattern; laser-induced thermal acoustics; measurement error; phase matching