title: Time-resolved flow-velocity and concentration measurements using a traveling thermal lens.
abstract: The traveling thermal lens technique is a new all-optical method for probing concentration and velocity patterns in flowing media. A thermal lens created by absorption of a short laser pulse moves with the flow and can be probed by a cw laser beam further downstream as a deflection signal. This technique permits optical measurements of the flow-velocity component perpendicular to the probe laser at high spatial resolution. Its application requires no seeding with particulates, as is needed in most other optical techniques.
authors.forename: H
authors.initials: H
authors.lastname: Sontag
authors.forename: A C
authors.initials: AC
authors.lastname: Tam