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dc.contributor.authorKobayashi, Takayoshien_US
dc.contributor.authorLiu, Junen_US
dc.contributor.authorOkamura, Kotaroen_US
dc.date.accessioned2014-12-08T15:22:15Z-
dc.date.available2014-12-08T15:22:15Z-
dc.date.issued2012-04-14en_US
dc.identifier.issn0953-4075en_US
dc.identifier.urihttp://dx.doi.org/10.1088/0953-4075/45/7/074005en_US
dc.identifier.urihttp://hdl.handle.net/11536/15763-
dc.description.abstractOur recent experimental results of three methods related to and useful for the generation of attosecond pulses are summarized. The pulses obtained by all of them have high qualities in terms of phase, temporal, spectral and spatial properties which are based on the physical principles associated with the parametric processes. First, carrier-envelope phase (CEP) stable sub-5 fs and sub-3 fs pulses by non-collinear optical parametric amplification (NOPA) in the near-infrared and visible spectral range will be described. The mechanism of the passive CEP stabilization is described. Passively stabilized idler and its second harmonic (SH) pulses from NOPAs are compressed to sub-5fs and sub-3fs, respectively. Compression of the idler output from a NOPA and its SH is attained with a specially designed characterization method during the compression. Second, generation of multicolour pulses by the cascaded four-wave mixing process in bulk media is discussed. As short as 15-fs multicoloured femtosecond pulses are obtained with two similar to 40 fs pulses incident to a fused-silica glass plate by this method. These broadband multicolour sidebands are expected to provide single-cycle or sub-fs pulses after the Fourier synthesis. Third, a new technique based on self-diffraction in the Kerr medium is used to clean and shorten the femtosecond laser pulse. The cleaned pulse with high temporal contrast is expected to be used as a seed for a background-free petawatt laser system and then used as the laser source for high-energy attosecond pulse generation in a solid target. The mechanisms of CEP stabilization, pulse spectral smoothening and pulse contrast enhancement are comparatively discussed.en_US
dc.language.isoen_USen_US
dc.titleApplications of parametric processes to high-quality multicolour ultrashort pulses, pulse cleaning and CEP stable sub-3fs pulseen_US
dc.typeReviewen_US
dc.identifier.doi10.1088/0953-4075/45/7/074005en_US
dc.identifier.journalJOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICSen_US
dc.citation.volume45en_US
dc.citation.issue7en_US
dc.citation.epageen_US
dc.contributor.department電子物理學系zh_TW
dc.contributor.departmentDepartment of Electrophysicsen_US
dc.identifier.wosnumberWOS:000301866200006-
dc.citation.woscount4-
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