| Paper | Title | Page |
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| WEPOR032 | Power Recycling of Burst-mode Laser Pulses for Laser Particle Interactions | 2739 |
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Funding: This work has been partially supported by U.S. DOE grant DE-FG02-13ER41967. ORNL is managed by UT-Battelle, LLC, under contract DE-AC05-00OR22725 for the U.S. DOE. A number of laser-particle interaction experiments such as the laser assisted hydrogen ion beam stripping or X-/γ-ray generations via inverse-Compton scattering involve light sources operating in a burst mode to match the temporal structure of the particle beam. As the small cross-section in the laser-particle interaction process results in negligible laser power loss, it is desirable to make the interaction inside an optical cavity to recycle the laser power. In many cases, conventional cavity locking techniques will not work since the burst normally has very small duty factor and low repetition rate and it is impossible to generate an effective control signal. In this talk, we report on the development of a doubly-resonant optical cavity scheme and its locking technique that enables a simultaneous resonance of two laser beams with different spectra and/or temporal structures. We demonstrate that such a cavity can be used to recycle burst-mode ultra-violet laser pulses with arbitrary burst lengths and repetition rates. System implementation, technical challenges, experimental results and applications will be described. * V. Danilov et al., Phys. Rev. ST Accel. Beams 10, 053501 (2007). ** K. Sakaue et al., Rev. Sci. Instrum. 80, 123304 (2009). *** A. Rakhman, M. Notcutt, and Y. Liu, Opt. Lett. 40, 5562 (2015). |
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