Abstract

A technique for measurement of gas flow velocity using photothermal deflection spectroscopy is described. This technique is especially suited for measurements of very low velocities. An extensive investigation of the technique has been carried out. This all-optical technique is nonintrusive and has high degrees of spatial and temporal resolution.

© 1986 Optical Society of America

Gas velocity measurements using photothermal deflection spectroscopy

Jeffrey A. Sell
Appl. Opt. 24(22) 3725-3735 (1985)

Pulsed photothermal deflection spectroscopy in a flowing medium: a quantitative investigation

A. Rose, Reeta Vyas, and R. Gupta
Appl. Opt. 25(24) 4626-4643 (1986)

Linear imaging of gas velocity using the photothermal deflection effect

Jeffrey A. Sell and Robert J. Cattolica
Appl. Opt. 25(9) 1420-1428 (1986)

Continuous wave photothermal deflection spectroscopy in a flowing medium

Reeta Vyas, B. Monson, Y-X. Nie, and R. Gupta
Appl. Opt. 27(18) 3914-3920 (1988)

Quantitative photothermal deflection spectroscopy in a flowing stream of gas

Jeffrey A. Sell
Appl. Opt. 23(10) 1586-1597 (1984)