An apparatus for quantitative high-harmonic generation spectroscopy in molecular vapours

作者：McGrath Felicity^*; Johnson Allan S; Austin Dane R; Hawkins Peter; Wood David; Miseikis Lukas; Simpson Emma R; Castillejo Marta; Torres Ricardo; Parker Susan; Siegel Thomas; Marangos Jon P

来源：Review of Scientific Instruments, 2017, 88(10): 103108.

DOI：10.1063/1.4986037

We present an apparatus for performing gas phase high-harmonic generation spectroscopy of molecules primarily found in the liquid phase. Liquid molecular samples are heated in a temperature controlled bath and their vapour is used to back a continuous flow gas jet, with vapour pressures of over 1 bar possible. In order to demonstrate the system, we perform high harmonic spectroscopy experiments in benzene with a 1.8 mu m driving field. Using the unique capabilities of the system, we obtain spectra that are nearly free from the effects of longitudinal phase-matching, amenable to comparison with advanced numerical modelling. Published by AIP Publishing.

• 出版日期2017-10