Chirped Pulse Line Velocimetry: a new diagnostic tool for dynamic compression experiments

Currently, PDV is one of the most common velocimetry technique used in dynamic compression experiments. However, it is limited by design to a single point measurement and therefore requires multiple probes and scope channels to obtain spatially resolved information, both of which can be costly. Line VISAR is another diagnostic that has been used in velocimetry measurements. It is able to detect profiles along a continuous line on a surface, but due to its complexity and sensitivity, it is usually paired only with large laser facilities. Here we present Chirped Pulse Line Velocimetry (CPLV). CPLV stems from ultrafast laser applications and it's development takes advantage of the recent advances in fiber optics used by the telecom industry. A prototype system is currently developed with chirped pulses extending up to 100 ns. This opens new diagnostic possibilities in laser compression experiments. We further discuss key factors of the system architecture and present a few implementation examples.