High-order harmonic generation from solid targets with 2 mJ pulses

James H. Easter 1 Aghapi G. Mordovanakis 2 Bixue Hou 1 Alexander G.R. Thomas 1 John A. Nees 1 Gérard Mourou 3 Karl Krushelnick 1
1 CUOS - Center for Ultrafast Optical Sciences
2 Department of Physics [Toronto]
3 ILE - Institut de la Lumiére Extrême
Abstract : Harmonics up to the 18th order are generated from solid targets by focusing 2 mJ, 50 fs pulses at 800 nm to a spot size of 1:7 µm (FWHM). To our knowledge, this is the first demonstration of high-harmonic generation with a very short focal length paraboloid (f /1.4) and kilohertz laser system. The harmonics have a low divergence (<4°) compared to the driving beam and conversion efficiencies (>10-7 per harmonic) comparable to gas harmonics. No contrast enhancement techniques are employed, and the system is capable of operating at 500 Hz. © 2010 Optical Society of America.
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Submitted on : Friday, July 12, 2013 - 9:53:26 AM
Last modification on : Wednesday, August 7, 2019 - 2:34:15 PM

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James H. Easter, Aghapi G. Mordovanakis, Bixue Hou, Alexander G.R. Thomas, John A. Nees, et al.. High-order harmonic generation from solid targets with 2 mJ pulses. Optics Letters, Optical Society of America, 2010, 35 (19), pp.3186-3188. ⟨10.1364/ol.35.003186⟩. ⟨hal-00838488⟩

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