Enhanced High Harmonic Generation in Xe, Kr and Ar Using a Capillary Discharge

Popmintchev, Tenio; Grisham,; Gaudiosi,; Reagan,; Cohen,; Berrill, M.; Murnane,; Kapteyn,; Rocca,

doi:10.1109/cleo.2007.4453220

Cited by 1 publication

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“…Ever since the first observation of high-order harmonics (HHG) using ultrashort ultraviolet (UV) and infrared (IR) laser pulses, the extreme nonlinear upconversion phenomenon has become a practical laboratory-scale technology for producing coherent light in the EUV and soft X-ray spectral ranges exceeding keV photon energies [1][2][3][4][5][6][7][8][9][10]. In more than three decades of intense research, this light source has evolved into a versatile laser light tool extending across the EUV and soft X-ray region [1][2][3][4][5][6][7][8][9][10][11], with temporal bursts as short as ~40 attoseconds, potentially approaching even a few attoseconds if compressed [12]. Such light sources can pass through optically nontransparent objects, visualize subwavelength nanostructures, manipulate magnetic states and currents, and study materials' chemistry and structure at picometer and femtosecond-to-attosecond scales, etc., [10,[13][14][15][16][17].…”

Section: Introductionmentioning

confidence: 99%

An efficient and aberration-free off-plane grating spectrometer and monochromator for EUV – soft X-ray applications

Popmintchev

et al. 2023

Preprint

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We demonstrate a novel dual-optic imaging EUV-X-ray spectrometer and monochromator that attains an unprecedented throughput efficiency exceeding 60% theoretically, along with a superior spectral resolution of λ/Δλ>200. Exploiting the benefits of the conical diffraction geometry, the optical system is globally optimized in multidimensional parameter space to guarantee optimal imaging performance over a broad spectral range while maintaining circular and elliptical polarization states at the first, second, and third diffraction orders. Moreover, our analysis indicates minimal temporal dispersion, with pulse broadening confined within 80 fs, which enables ultrafast spectroscopic and pump-probe measurements with femtosecond accuracy. Furthermore, the spectrometer can be effortlessly transformed into a monochromator spanning the EUV–soft X-ray spectral region. Such capability allows coherent diffractive imaging applications to be conducted with highly monochromatic light in a broad spectral range and extended to the soft X-ray region with minimal photon loss. Thus, enhancing the imaging resolution and enabling the investigation of bio and nano samples. In addition, the advanced design incorporates optimized spatio-temporal parameters, facilitating cutting-edge versatile EUV - X-ray applications.

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Section: Introductionmentioning

confidence: 99%

An efficient and aberration-free off-plane grating spectrometer and monochromator for EUV – soft X-ray applications

Popmintchev

et al. 2023

Preprint

View full text Add to dashboard Cite

show abstract

Enhanced High Harmonic Generation in Xe, Kr and Ar Using a Capillary Discharge

Cited by 1 publication

References 7 publications

An efficient and aberration-free off-plane grating spectrometer and monochromator for EUV – soft X-ray applications

An efficient and aberration-free off-plane grating spectrometer and monochromator for EUV – soft X-ray applications

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