Plasmon‐Enhanced Circular Polarization High‐Harmonic Generation from Silicon
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DOI: 10.1002/adom.202401478
Abstract: High harmonics of circular polarization can be directly generated by monochromatic circularly polarized incident light owing to the high density and stable structure of crystal media. If the arrangement of multiple coplanar atoms in the… read more here.
Keywords: plasmon enhanced; high harmonic; high harmonics; circular polarization ... See more keywords
Modification of the spectrum of high harmonics by a weak vacuum ultraviolet field
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DOI: 10.1070/qel16651
Abstract: Within the framework of the time-dependent effective range theory, we have calculated the spectra of high harmonics in a field containing an intense low-frequency component and a weak (perturbative) high-frequency component with a photon energy… read more here.
Keywords: spectrum high; field; modification spectrum; harmonics weak ... See more keywords
Efficient XUV-light out-coupling of intra-cavity high harmonics by a coated grazing-incidence plate.
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DOI: 10.1364/oe.458946
Abstract: We experimentally demonstrate an efficient and broadband extreme-ultraviolet light (XUV) out-coupling mechanism of intra-cavity generated high harmonics. The mechanism is based on a coated grazing-incidence plate (GIP), which utilizes the enhanced reflectivity of s-polarized light… read more here.
Keywords: incidence; high harmonics; coated grazing; harmonics ... See more keywords
Role of fractional high harmonics with non-integer OAM on the generation of a helical attosecond pulse train.
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DOI: 10.1364/oe.479226
Abstract: Extreme-ultraviolet pulses of attosecond duration carrying orbital angular momentum (OAM) can be produced by spectrally filtering vortex high harmonics generated in a gas medium. Here we reveal that fractional high harmonics (FHHs) with non-integer OAM… read more here.
Keywords: fractional high; helical attosecond; non integer; high harmonics ... See more keywords
High Harmonics with Controllable Polarization by a Burst of Linearly-Polarized Driver Pulses
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DOI: 10.3390/photonics4020031
Abstract: We theoretically explore a scheme for generation of bright circularly and elliptically polarized high-order harmonics by bursts of linearly polarized pulses with a rotating polarization axis. Circularly polarized harmonics are formed if the bursts are… read more here.
Keywords: harmonics controllable; linearly polarized; controllable polarization; high harmonics ... See more keywords