CERN Accelerating science

Article
Title	Photo-Acoustic Spectroscopy with Infrared FEL
Author(s)	Yasumoto, Masato ; Ogawa, Hiroshi ; Sei, Norihiro ; Yamada, Kawakatsu
Affiliation	(AIST-PRI, Tsukuba, Ibaraki)
Publication	2004
In:	26th International Free Electron Laser Conference and 11th FEL User Workshop 2004, Trieste, Italy, 29 Aug - 3 Sep 2004, pp.e-proc. THPOS30
Subject category	Accelerators and Storage Rings
Abstract	Photo-acoustic spectroscopy (PAS) is a sensitive technique for measuring small absorptions of samples. In an ordinary PAS a pulse laser is used as a light source for inducing photo-acoustic signals. In our novel PAS an infrared FEL is used as the light source. The infrared FEL is continuously tunable in the wavelength with a high repetition rate. Thus, the PAS with the infrared FEL can be applied in various samples compared with the ordinary PAS. We will show the feasibility of the novel PAS.