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Opt Express. 2013 Jan 14;21(1):681-9. doi: 10.1364/OE.21.000681.

All-diode-pumped quasi-continuous burst-mode laser for extended high-speed planar imaging.

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  • 1Spectral Energies, LLC, Dayton, OH 45431, USA.


An all-diode-pumped, multistage Nd:YAG amplifier is investigated as a means of extending the duration of high-power, burst-mode laser pulse sequences to an unprecedented 30 ms or more. The laser generates 120 mJ per pulse at 1064.3 nm with a repetition rate of 10 kHz, which is sufficient for a wide range of planar laser diagnostics based on fluorescence, Raman scattering, and Rayleigh scattering, among others. The utility of the technique is evaluated for image sequences of formaldehyde fluorescence in a lifted methane-air diffusion flame. The advantages and limitations of diode pumping are discussed, along with long-pulse diode-bar performance characteristics to guide future designs.

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