Abstract

Picosecond, flat-top, deep-UV pulses are needed to generate high-brightness electron beams to efficiently drive x-ray free electron lasers. Current metal photocathodes have low efficiency and therefore require high-energy pulses, and the generation of high-energy, flat-top pulses in the deep UV is still challenging. The low efficiencies of both the harmonic generation and deep-UV pulse shapers restrict the accessible pulse energy. Moreover, the acceptance bandwidth of the harmonic generation limits the minimum rise time of the flat-top profile. We present the generation of few-hundred microjoule, picosecond, deep-UV pulses using chirp-matched sum frequency generation. This scheme combined with IR spectral manipulation is a novel approach for deep-UV pulse shaping. It permits flat-top pulses with high energy and fast rise time, highly suited for high-brightness photoelectron beam production.

© 2012 Optical Society of America

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[CrossRef]

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[CrossRef]

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[CrossRef]

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M. Kotur, T. Weinacht, B. J. Pearson, and S. Matsika, J. Chem. Phys. 130, 134311 (2009).
[CrossRef]

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J. Yang, F. Sakai, T. Yanagida, M. Yorozu, Y. Okada, K. Takasago, A. Endo, A. Yada, and M. Washio, J. Appl. Phys. 92, 1608 (2002).
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Ple, F.

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Yada, A.

J. Yang, F. Sakai, T. Yanagida, M. Yorozu, Y. Okada, K. Takasago, A. Endo, A. Yada, and M. Washio, J. Appl. Phys. 92, 1608 (2002).
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[CrossRef]

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J. Yang, F. Sakai, T. Yanagida, M. Yorozu, Y. Okada, K. Takasago, A. Endo, A. Yada, and M. Washio, J. Appl. Phys. 92, 1608 (2002).
[CrossRef]

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J. Yang, F. Sakai, T. Yanagida, M. Yorozu, Y. Okada, K. Takasago, A. Endo, A. Yada, and M. Washio, J. Appl. Phys. 92, 1608 (2002).
[CrossRef]

Appl. Opt.

Appl. Phys. B

A. Trisorio, C. Ruchert, and C. P. Hauri, Appl. Phys. B 105, 255 (2011).
[CrossRef]

J. Appl. Phys.

J. Yang, F. Sakai, T. Yanagida, M. Yorozu, Y. Okada, K. Takasago, A. Endo, A. Yada, and M. Washio, J. Appl. Phys. 92, 1608 (2002).
[CrossRef]

J. Chem. Phys.

M. Kotur, T. Weinacht, B. J. Pearson, and S. Matsika, J. Chem. Phys. 130, 134311 (2009).
[CrossRef]

J. Opt. Soc. Am. B

Opt. Express

Opt. Lett.

Phys. Rev. Lett.

A. Monmayrant, B. Chatel, and B. Girard, Phys. Rev. Lett. 96, 103002 (2006).
[CrossRef]

Other

R. Ganter, ed., “SwissFEL Conceptual Design Report” (version 19), http://www.psi.ch/swissfel/CurrentSwissFELPublicationsEN/SwissFEL_CDR__v19_03.03.11-small.pdf , p. 77.

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