Carrier-Specific Hot Phonon Bottleneck in CH3NH3PbI3 Revealed by Femtosecond XUV Absorption.
Sign Up to like & getrecommendations! Published in 2021 at "Journal of the American Chemical Society"
DOI: 10.1021/jacs.1c07817
Abstract: Femtosecond carrier cooling in the organohalide perovskite semiconductor CH3NH3PbI3 is measured using extreme ultraviolet (XUV) and optical transient absorption spectroscopy. XUV absorption between 44 and 58 eV measures transitions from the I 4d core to… read more here.
Keywords: phonon bottleneck; hot phonon; carrier; xuv absorption ... See more keywords
Autoionization dynamics of helium nanodroplets resonantly excited by intense XUV laser pulses
Sign Up to like & getrecommendations! Published in 2020 at "New Journal of Physics"
DOI: 10.1088/1367-2630/ab9554
Abstract: The ionization dynamics of helium droplets in a wide size range from 220 to 10^6 He atoms irradiated with intense femtosecond extreme ultraviolet (XUV) pulses of 10^9 {\div} 10^{12} W/cm2 power density is investigated in… read more here.
Keywords: autoionization dynamics; autoionization; dynamics helium; xuv ... See more keywords
Influence of the Sun-like magnetic cycle on exoplanetary atmospheric escape
Sign Up to like & getrecommendations! Published in 2020 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnras/staa1815
Abstract: Stellar high-energy radiation (X-ray and extreme ultraviolet, XUV) drives atmospheric escape in close-in exoplanets. Given that stellar irradiation depends on the stellar magnetism and that stars have magnetic cycles, we investigate how cycles affect the… read more here.
Keywords: escape; cycle; atmospheric escape; xuv ... See more keywords
Extended quantitative rescattering model for simulating high-order harmonic streaking spectra by synchronization of an intense IR laser and a time-delayed attosecond XUV pulse
Sign Up to like & getrecommendations! Published in 2021 at "Physical Review A"
DOI: 10.1103/physreva.104.033102
Abstract: We theoretically investigate the modulated high-harmonic generation (HHG) driven by an intense few-cycle infrared (IR) laser field and a weak extreme-ultraviolet (XUV) pulse at a delayed time. We establish an extended quantitative rescattering (EQRS) model… read more here.
Keywords: xuv pulse; time; streaking spectra; model ... See more keywords
Excited-state vibronic wave-packet dynamics in H 2 probed by XUV transient four-wave mixing
Sign Up to like & getrecommendations! Published in 2018 at "Physical Review A"
DOI: 10.1103/physreva.97.023401
Abstract: Author(s): Cao, W; Warrick, ER; Fidler, A; Leone, SR; Neumark, DM | Abstract: © 2018 American Physical Society. The complex behavior of a molecular wave packet initiated by an extreme ultraviolet (XUV) pulse is investigated… read more here.
Keywords: wave packet; energy; wave; wave mixing ... See more keywords
Alignment of the aberration-free XUV Raman spectrometer at FLASH.
Sign Up to like & getrecommendations! Published in 2019 at "Journal of synchrotron radiation"
DOI: 10.1107/s160057751801576x
Abstract: An extreme-ultraviolet (XUV) double-stage Raman spectrometer is permanently installed as an experimental end-station at the PG1 beamline of the soft X-ray/XUV free-electron laser in Hamburg, FLASH. The monochromator stages are designed according to the Czerny-Turner… read more here.
Keywords: flash; aberration free; raman spectrometer; xuv ... See more keywords
High-harmonic generation wave front dependence on a driving infrared wave front.
Sign Up to like & getrecommendations! Published in 2020 at "Applied optics"
DOI: 10.1364/ao.59.001363
Abstract: With high-harmonic generation (HHG), spatially and temporally coherent XUV to soft x-ray (100 nm to 10 nm) table-top sources can be realized by focusing a driving infrared (IR) laser on a gas target. For applications… read more here.
Keywords: driving infrared; harmonic generation; generation; wave front ... See more keywords
High-flux source of coherent XUV pulses for user applications.
Sign Up to like & getrecommendations! Published in 2019 at "Optics express"
DOI: 10.1364/oe.27.008871
Abstract: We present experimental results obtained at a user-oriented XUV beamline implemented at the ELI Beamlines facility. The coherent XUV radiation is produced via high harmonic generation in gases in a loose focusing geometry. The beamline… read more here.
Keywords: high flux; coherent xuv; flux source; xuv ... See more keywords
Angular resolved above-threshold ionization spectrum of an atom in IR+XUV orthogonally polarized two-color laser fields.
Sign Up to like & getrecommendations! Published in 2019 at "Optics express"
DOI: 10.1364/oe.27.020754
Abstract: We investigate the above-threshold ionization (ATI) process of atoms exposed to the IR+XUV orthogonally polarized two-color laser fields by using the frequency-domain theory. It is shown that there exists a dip structure in each plateau… read more here.
Keywords: threshold ionization; xuv; spectrum; laser ... See more keywords
Phase-locking of time-delayed attosecond XUV pulse pairs.
Sign Up to like & getrecommendations! Published in 2022 at "Optics express"
DOI: 10.1364/oe.452018
Abstract: We present a setup for the generation of phase-locked attosecond extreme ultraviolet (XUV) pulse pairs. The attosecond pulse pairs are generated by high harmonic generation (HHG) driven by two phase-locked near-infrared (NIR) pulses that are… read more here.
Keywords: phase; xuv; attosecond xuv; pulse pairs ... See more keywords
Efficient XUV-light out-coupling of intra-cavity high harmonics by a coated grazing-incidence plate.
Sign Up to like & getrecommendations! Published in 2022 at "Optics express"
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