A high-pulse-energy megahertz-repetition-rate Nd:YAG-based pulse-burst laser system has been developed. The laser can produce a burst of more than 30 pulses, with an average energy per pulse of 70 mJ, at up to 1-MHz repetition rate. The burst repetition rate is 9 Hz. Coupled with a megahertz-framing-rate CCD camera, the frequency-doubled pulse-burst laser system has been successfully used in the visualization of shock evolution in a supersonic flow.
© 2000 Optical Society of America
(120.1740) Instrumentation, measurement, and metrology : Combustion diagnostics
(120.4290) Instrumentation, measurement, and metrology : Nondestructive testing
(120.4640) Instrumentation, measurement, and metrology : Optical instruments
(120.7250) Instrumentation, measurement, and metrology : Velocimetry
(140.3280) Lasers and laser optics : Laser amplifiers
Pingfan P. Wu and Richard B. Miles, "High-energy pulse-burst laser system for megahertz-rate flow visualization," Opt. Lett. 25, 1639-1641 (2000)