Abstract
A collinear photothermal detection bench is described that makes use of a position-modulated heating source instead of the classic power-modulated source. This new modulation scheme increases by almost a factor 2 the sensitivity of a standard mirage bench. This bench is then used to measure the absorption coefficient of OH-free synthetic fused silica at 1064 nm in the parts per 106 range, which, combined with spectrophotometric measurements, confirms that the dominant absorption source is the OH content.
© 2003 Optical Society of America
Full Article | PDF ArticleMore Like This
Mireille Commandré and Emile Pelletier
Appl. Opt. 29(28) 4276-4283 (1990)
Sanichiro Yoshida, David H. Reitze, David B. Tanner, and Justin D. Mansell
Appl. Opt. 42(24) 4835-4840 (2003)
Jessica Steinlechner, Lars Jensen, Christoph Krüger, Nico Lastzka, Sebastian Steinlechner, and Roman Schnabel
Appl. Opt. 51(8) 1156-1161 (2012)