High harmonics with spatially varying ellipticity

Ellis, Jennifer L.; Dorney, Kevin M.; Hickstein, Daniel D.; Brooks, Nathan J.; Gentry, Christian; Hernández-García, Carlos; Zusin, Dmitriy; Shaw, Justin M.; Nguyen, Quynh L.; Mancuso, Christopher; Jansen, G. S. Matthijs; Witte, Stefan; Kapteyn, Henry C.; Murnane, Margaret M.

doi:10.1364/optica.5.000479

Cited by 44 publications

(23 citation statements)

References 50 publications

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“…Generation of structured light and, in particular, radiation with structured polarization, has interesting prospects for the future, as outlined in [2] and references therein. Techniques for generating radiation pulses with complex polarization topology are well developed in the optical range; for instance, generation of radiation with spatially varying ellipticity [3], full Poincaré beams [4], polarization Möbius strips [5], and radiation with temporally shaped polarization [6] were reported. Passing optical light through numerous components is necessary to achieve such results.…”

Section: Introductionmentioning

confidence: 99%

Method for polarization shaping at free-electron lasers

Serkez

Trebushinin

Veremchuk

et al. 2019

Phys. Rev. Accel. Beams

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X-ray free electron lasers provide short, polarized, high-power pulses of x-ray radiation, where polarization properties are determined by the undulator magnetic field. We propose a cost-effective method to shape the polarization of FEL radiation on the sample both spatially, on a few-μm scale, and/or temporally on the 100-femtosecond scale. The method is based on coaxial superposition of two coherent radiation pulses with different frequencies emitted in two consequent undulators set to emit radiation with orthogonal polarization states. Its capabilities are demonstrated via numerical simulations for the SASE3 undulator line of the European X-ray Free-Electron Laser. Generation of x-ray free-electron laser pulses with shaped polarization may be interesting for studies of magnetism or ultrafast phenomena and will facilitate further developments of complex light engineering in the soft X-ray range.

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Section: Introductionmentioning

confidence: 99%

Method for polarization shaping at free-electron lasers

Serkez

Trebushinin

Veremchuk

et al. 2019

Phys. Rev. Accel. Beams

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“…Furthermore, it's also possible to generate IAPs by using few-cycle driving fields. EUV MCD on cobalt is measured and the result showed good spatially varying contrast of dichroism in single harmonic orders [48] (see Fig. 5.…”

Section: E Spatially Varying Ellipticity Hhgmentioning

confidence: 97%

“…A common-path interferometer creates two orthogonally polarized and angularly separated beams, which are focused to two spatially separated focal spots for yielding two orthogonally polarized HHG beams, which diverge to overlap in the far field and thereby produce a far-field polarizationvarying distribution. The figure is reprinted with permission from ref [48], The Optical Society. Fig.…”

Section: E Spatially Varying Ellipticity Hhgmentioning

confidence: 99%

Realization of Polarization Control in High-Order Harmonic Generation

Huang

Hernández-García

Huang

et al. 2019

IEEE J. Select. Topics Quantum Electron.

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The nature of high-order harmonic generation process limits the harmonics emission to linear polarization. In this paper, we review the recent progress to generate elliptically or circularly polarized high-harmonic EUV pulses. We further demonstrate how complete control of polarization state of isolated high-harmonic pulse can be realized today by noncollinear focusing of two driving pulses with identical ellipticity but counter-rotating helicity. This paper opens a path towards the study of the fastest dynamics-down to attosecond time scales-in circular dichroism of magnetic materials, chiral molecules, and electronic spin motion. Index Terms-Optical harmonic generation, optical polarization, ultrafast optics. I. INTRODUCTIONU LTRAFAST optical pulse generation plays an important role in pump/probe measurement for the fastest dynamics study in microscopy. Among all of nonlinear effects to generate short pulses, high-order harmonic generation (HHG) opens a Manuscript

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“…This approach also has the advantage of being amenable to generating isolated circularly polarized attosecond pulses [28]. Other techniques that have successfully generated elliptical to circularly polarized harmonics include the use of two HHG sources through the use of two orthogonally polarized foci [50] or two different gas jets [57].…”

Section: Sculpting the Angular Momentum Of High-order Harmonic Beamsmentioning

confidence: 99%

Attosecond light science and its application for probing quantum materials

Shi

Liao

Tao

et al. 2020

J. Phys. B: At. Mol. Opt. Phys.

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In this paper, we review the development and application of coherent short wavelength light sources implemented using the high harmonic generation (HHG) process. The physics underlying HHG brought quantum physics into the domain of attosecond time-scales for the first time. The observation and manipulation of electron dynamics on such short time-scales-a capability not conceived-of just a few decades ago-is becoming both more-and-more sophisticated and useful as a route to achieve exquisite control over short wavelength light. New experimental techniques are enabling HHG light sources to provide new insights into fundamental quantum interactions in materials, making it possible for the first time to capture the fastest charge, spin, photon and phonon interactions and to achieve diffraction-limited imaging at short wavelengths.

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High harmonics with spatially varying ellipticity

Cited by 44 publications

References 50 publications

Method for polarization shaping at free-electron lasers

Method for polarization shaping at free-electron lasers

Realization of Polarization Control in High-Order Harmonic Generation

Attosecond light science and its application for probing quantum materials

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