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Deep-ultraviolet picosecond flat-top pulses by chirp-matched sum frequency generation |
Optics Letters, Vol. 37, Issue 10, pp. 1619-1621 (2012)
http://dx.doi.org/10.1364/OL.37.001619
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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
OCIS Codes
(190.0190) Nonlinear optics : Nonlinear optics
(320.5540) Ultrafast optics : Pulse shaping
ToC Category:
Nonlinear Optics
History
Original Manuscript: December 12, 2011
Revised Manuscript: February 7, 2012
Manuscript Accepted: February 23, 2012
Published: May 7, 2012
Citation
C. Vicario, A. Trisorio, G. Arisholm, and C. P. Hauri, "Deep-ultraviolet picosecond flat-top pulses by chirp-matched sum frequency generation," Opt. Lett. 37, 1619-1621 (2012)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-37-10-1619
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