WorldCat Identities

Kapteyn, Henry Cornelius

Works: 18 works in 21 publications in 2 languages and 33 library holdings
Roles: Author
Classifications: QC3.6, 621.366
Publication Timeline
Most widely held works by Henry Cornelius Kapteyn
Final Scientific/Technical Report for DE-FG03-02NA00063Coherent imaging of laser-plasma interactions using XUV high harmonic radiation( )

1 edition published in 2006 in English and held by 6 WorldCat member libraries worldwide

The objective of this project was to develop experimental techniques for using coherent extreme-ultraviolet (EUV) radiation generated using the high-order harmonic generation technique, as an illumination source for studies of high-density plasmas relevant to the stockpile stewardship mission. In this project, we made considerable progress, including the first demonstration of imaging of dynamic processes using this coherent ultrashort pulse light. This work also stimulated considerable progress in the development of the required ultrashort EUV pulses, and in the development of new laser technologies that have been commercialized. We also demonstrated the first EUV sources that exhibit full intrinsic optical coherence. This work resulted in 12 publications
Photoionization-pumped short-wavelength lasers by Henry Cornelius Kapteyn( )

3 editions published in 1989 in English and held by 5 WorldCat member libraries worldwide

Generation and Characterization of Coherent Soft X-Ray Light with High Harmonic Generation by Paul Christopher Arpin( )

1 edition published in 2012 in English and held by 2 WorldCat member libraries worldwide

The "water window" is a particularly important region of the spectrum for high resolution biological imaging. In this region, between 284 and 540 eV, water is an order of magnitude more transparent than carbon, providing contrast between various biological materials
Coherent Diffractive Imaging Near the Spatio-Temporal Limit with High-Harmonic Sources by Dennis Floyd, Jr Gardner( )

1 edition published in 2017 in English and held by 2 WorldCat member libraries worldwide

This thesis discusses methods for high-resolution static and stroboscopic microscopy using tabletop coherent extreme ultraviolet (EUV) radiation from tabletop high-harmonic generation (HHG) sources. These coherent short wavelength light sources are combined with a lensless, computational, phase and amplitude-contrast technique called ptychographic Coherent Diffractive Imaging (CDI). While ptychographic CDI techniques are currently widespread for visible, EUV and X-ray microscopy, no previous work has been able to achieve at-wavelength resolution of extended samples, especially in a reflection geometry, nor has previous work been able to image periodic samples with high-fidelity. In this work, a combination of experimental methods for high-numerical aperture imaging and novel computational algorithms enabled the highest resolution-to-wavelength demonstrations using any CDI technique. These algorithms include tilted plane correction, which enables high-resolution imaging of surfaces in a reflection geometry, and a powerful technique termed ‘modulus enforced probe’, which enables both imaging of periodic objects and convergence of the ptychographic CDI algorithm in fewer iterations. Furthermore, the ultrafast pulse duration of the high-harmonic radiation is harnessed to demonstrate proof-of-principle pump-probe imaging of nanostructures, capturing thermal transport processes in nanostructures with an axial resolution of 3 angstroms. Stroboscopic imaging with nanoscale resolution is a critical tool for the investigation of nanoscale heat flow and magnetic switching for the advancement of next generation nano-electronics, data storage, and nano-engineered systems
High Peak and Average Power Mid-Infrared Laser for High Harmonic Generation of Soft X-rays by Susannah Rachel Wang( )

1 edition published in 2016 in English and held by 2 WorldCat member libraries worldwide

The laser system described in this thesis reaches pulse energies up to 1.25 mJ at 1 kHz repetition rate, 3.1 mum wavelength, and with enough bandwidth to support 60 fs transform-limited pulses. Also, we demonstrate preliminary pulse compression to below 500 fs. This laser is therefore the first table-top mid-infrared laser with enough peak intensity and average power to generate harmonics with sufficient flux to be useful for application experiments. This laser uses Optical Parametric Chirped Pulse Amplification (OPCPA) to convert near-infrared light to the 3 mum wavelength regime, combining fiber lasers, cryogenically cooled solid state lasers, diode lasers, and optical parametric amplification in a unique architecture. In this thesis, we describe the current design of this laser system, the considerations that influenced its design, and its potential for scaling to higher pulse energies and repetition rates in the future
Bright Coherent Ultrafast Tabletop Light Sources Development and the Application on EUV to Soft X-Ray Absorption Spectroscopy by Chengyuan Ding( )

1 edition published in 2014 in English and held by 2 WorldCat member libraries worldwide

The generation of the advanced bright coherent ultrafast light source from ultraviolet (UV) to soft X-ray have been pursued for decades. It requires the development of light conversion technique, such as high-order harmonics generation (HHG), as well as the driving laser. In this thesis, we first demonstrate the highest pulse energy (10 mJ), single-stage, ultrafast (45 fs) Ti:sapphire amplifier to date, with a repetition rate of 1 kHz. We then use this laser to pump an optical parametric amplifier system and generate 1.3 microm, 30 fs pulses with sufficient energy (2 mJ) for optimally-efficient, phase matched HHG conversion. This allows us to demonstrate the highest flux, soft X-ray HHG source to date with > 106 photons/pulse/1% bandwidth at 1 kHz (corresponding to > 109 photons/s/1% bandwidth) in a broadband, continuum, spectrum extending to 200 eV, through the fully phase matched hollow waveguide geometry HHG. This photon flux represents an approximately 3 orders-of-magnitude increase compared with past work. Meanwhile, due to the experimental similarity, the high energy ultrashort (10 fs) UV source is implemented in parallel to the soft X-ray source by the four wave mixing (FWM) process. The pulse energy (32 microJ) of UV source is increased by more than 3 times compared with past work, with the pulse duration compressible to less than 13 fs. Finally, utilizing the unique bright supercontinuum HHG soft X-ray source, we have demonstrated soft X-ray absorption spectroscopy of multiple elements and transitions in molecules simultaneously, with the ability to resolve near edge fine structure with high fidelity. The Xeon photon-ionization process is also resolved in the EUV transient absorption spectroscopy experiment by tuning the soft X-ray source to the EUV region, which shows the stability, tunability, and applicability of our tabletop extreme nonlinear light source for the time-resolved experiments
EUV Microscopy with a Tabletop High Harmonic Generation Source: Generalizing Coherent Diffractive Imaging to Extended Samples in Transmission, Reection, and Hyperspectral Modalities by Bosheng Zhang( )

1 edition published in 2015 in English and held by 2 WorldCat member libraries worldwide

Imaging at the nanoscale is of great interest for applications in materials science, nanoscience and biology. The microscopy method developed in this thesis combines a tabletop coherent EUV/X- ray source based on high harmonic generation, and an image-forming method based on coherent diffractive imaging. This microscopy method offers truly diffraction-limited resolution; however, previous work has been limited to thin, isolated samples in transmission mode. This thesis work extends this tool for imaging non-isolated samples, and for working in reflection mode to image surface features of thick samples. The quantitative phase information of the reflection image enables surface profilometry capability with sub-nanometer precision. The microscope developed in this work is also demonstrated to have hyperspectral capability with simultaneous multi-wavelength illumination, without the need for wavelength scanning or energy-resolved detectors. In the future, by taking advantage of the short-pulse nature of the high harmonic illumination, this microscope will be able to image nanoscale ultrafast dynamics with 10 femtosecond temporal resolution, opening the door for imaging at the space-time limits
Strong Field Laser Physics by Thomas Brabec( Book )

2 editions published in 2004 in German and English and held by 2 WorldCat member libraries worldwide

Helicity-selective phase-matching and quasi-phase matching of circularly polarized high-order harmonics: towards chiral attosecond pulses( )

1 edition published in 2016 in English and held by 1 WorldCat member library worldwide

Abstract: Phase matching of circularly polarized high-order harmonics driven by counter-rotating bi-chromatic lasers was recently predicted theoretically and demonstrated experimentally. In that work, phase matching was analyzed by assuming that the total energy, spin angular momentum and linear momentum of the photons participating in the process are conserved. Here we propose a new perspective on phase matching of circularly polarized high harmonics. We derive an extended phase matching condition by requiring a new propagation matching condition between the classical vectorial bi-chromatic laser pump and harmonics fields. This allows us to include the influence of the laser pulse envelopes on phase matching. We find that the helicity dependent phase matching facilitates generation of high harmonics beams with a high degree of chirality. Indeed, we present an experimentally measured chiral spectrum that can support a train of attosecond pulses with a high degree of circular polarization. Moreover, while the degree of circularity of the most intense pulse approaches unity, all other pulses exhibit reduced circularity. This feature suggests the possibility of using a train of attosecond pulses as an isolated attosecond probe for chiral-sensitive experiments
Attosecond Light Pulses and Attosecond Electron Dynamics Probed using Angle-Resolved Photoelectron Spectroscopy by Cong Chen( )

1 edition published in 2017 in English and held by 1 WorldCat member library worldwide

Recent advances in the generation and control of attosecond light pulses have opened up new opportunities for the real-time observation of sub-femtosecond (1 fs = 10-15 s) electron dynamics in gases and solids. Combining attosecond light pulses with angle-resolved photoelectron spectroscopy (atto-ARPES) provides a powerful new technique to study the influence of material band structure on attosecond electron dynamics in materials. Electron dynamics that are only now accessible include the lifetime of far-above-bandgap excited electronic states, as well as fundamental electron interactions such as scattering and screening. In addition, the same atto-ARPES technique can also be used to measure the temporal structure of complex coherent light fields. In this thesis, I present four experiments utilizing atto-ARPES to provide new insights into the generation and characterization of attosecond light pulses, as well as the attosecond electron dynamics in transition metals. First, I describe a new method to extend attosecond metrology techniques to the reconstruction of circularly polarized attosecond light pulses for the first time. Second, I show that by driving high harmonics with a two-color linearly polarized laser field, quasi-isolated attosecond pulses are generated because the phase matching window is confined. Third, I present the first measurement of lifetimes for photoelectrons that are born into free-electron-like states compared with those that are excited into unoccupied excited states in the band structure of a material (Ni(111)). The finite excited-state lifetime causes a ?200 as delay in the emission of photoelectrons. Finally, I describe direct time-domain studies of electron-electron interactions in transition metals with both simple and complex Fermi surfaces. In particular, I show the influence of electron-electron scattering and screening on the lifetime of photoelectrons
Harnessing attosecond science in the quest for coherent X-rays by Margaret Murnane( Visual )

1 edition published in 2009 in English and held by 1 WorldCat member library worldwide

High-Order Harmonic Generation Driven by Mid-Infrared Laser Light by Benjamin R Galloway( )

1 edition published in 2017 in English and held by 1 WorldCat member library worldwide

Light is a powerful tool for making observations of the physical world. In particular, light in the extreme ultraviolet (EUV) and X-ray regimes enable unique and higher resolution measurements than is possible using longer wavelengths. A relatively new technique called high-order harmonic generation (HHG) provides a route for scientists to produce light in these useful spectral ranges, starting with lasers operating at more accessible wavelengths. HHG has been successfully applied to a number of applications including high resolution microscopy, spectroscopy, and measurements of magnetism, thermal transport, and molecular structure
Extreme nonlinear optics & coherent x-ray sources by Margaret Murnane( Visual )

1 edition published in 2000 in English and held by 1 WorldCat member library worldwide

At a NIST colloquium held September 22, 2000 at the National Institute of Standards and Technology, Drs. Murnane and Kapteyn lecture on the nonlinear process of high harmonic generation
Quantum and Extreme Nonlinear Optics Design of Coherent Ultrafast X-ray Light and Applications by Dimitar Popmintchev( )

1 edition published in 2016 in English and held by 1 WorldCat member library worldwide

Observing the non-equilibrium dynamics of the invisible ultrafast atomic and sub atomic world requires optical tools with ultrashort bursts of light and wavelengths. Such optical sources can provide us with the ultimate understanding of the quantum universe in the 4D space-time continuum at femto-zeptosecond time and nano-picometer spatial scale. Revealing at the same time, the 'extra dimensions' of the chemical nature of matter with elemental specificity, e.g., oxidation, charge/spin localization to specific elements, etc. To expand the frontiers of knowledge, there is a simple solution: coherent ultrafast X-ray or gamma--ray laser light. Amongst the numerous X-ray light sources that exist or have been developed to date, there are just two practical complementary alternatives: giant free electron X-ray laser facilities and compact high harmonic generation X-ray lasers. This thesis focuses on the latter
Bright Linearly and Circularly Polarized Extreme Ultraviolet and Soft X-ray High Harmonics for Absorption Spectroscopy by Tingting Fan( )

1 edition published in 2017 in English and held by 1 WorldCat member library worldwide

High harmonic generation (HHG) is an extreme nonlinear optical process. When implemented in a phase-matched geometry, HHG coherent upconverts femtosecond laser light into coherent "X-ray laser" beams, while retaining excellent spatial and temporal coherence, as well as the polarization state of the driving laser. HHG has a tabletop footprint, with femtosecond to attosecond time resolution, combined with nanometer spatial resolution. As a consequence of these unique capabilities, HHG is now being widely adopted for use in molecular spectroscopy and imaging, materials science, as well as nanoimaging in general. In the first half of this thesis, I demonstrate high flux linearly polarized soft X-ray HHG, driven by a single-stage 10-mJ Ti:sapphire regenerative amplifier at a repetition rate of 1 kHz. I first down-converted the laser to 1.3 mum using an optical parametric amplifier, before up-converting it into the soft X-ray region using HHG in a high-pressure, phase-matched, hollow waveguide geometry. The resulting optimally phase-matched broadband spectrum extends to 200 eV, with a soft X-ray photon flux of > 106 photons/pulse/1% bandwidth at 1 kHz, corresponding to > 109 photons/s/1% bandwidth, or approximately a three orders-of-magnitude increase compared with past work. Using this broad bandwidth X-ray source, I demonstrated X-ray absorption spectroscopy of multiple elements and transitions in molecules in a single spectrum, with a spectral resolution of 0.25 eV, and with the ability to resolve the near edge fine structure
High-Resolution, Quantitative, and Three-Dimensional Coherent Diffractive Imaging with a Tabletop EUV Source by Elisabeth Rose Shanblatt( )

1 edition published in 2017 in English and held by 1 WorldCat member library worldwide

In this thesis, I describe the development of a new type of microscopy that combines two powerful tools: coherent extreme ultraviolet (EUV) light sources produced by high harmonic generation, and ptychographic coherent diffractive imaging. This microscope produces high-resolution, chemically-specific, phase- and amplitude-contrast images with large fields of view on the order of hundreds of microns, while preserving a high spatial resolution on the scale of tens of nanometers
Uncovering New Thermal and Elastic Properties of Nanostructured Materials Using Coherent EUV Light by Jorge Nicolas Hernandez Charpak( )

1 edition published in 2017 in English and held by 1 WorldCat member library worldwide

In other work, I used coherent EUV nanometrology to simultaneously measure, in a non-contact and non-destructive way, Young's modulus and, for the first time, Poisson's ratio of ultra-thin films. I successfully extracted the full elastic tensor of the thinnest films to date (10.9nm). Moreover, by using our technique on a series of low-k dielectric sub-100 nm SiC:H films, I uncovered an unexpected transition from compressible to non-compressible behavior. This new behavior is observed for materials whose network connectivity had been modified through hydrogenation (that breaks bonds in order to decrease the dielectric constant of these materials). This finding demonstrates that coherent EUV nanometrology provides a valuable, quantitative new tool for measuring nanomaterial properties with dimensions an order of magnitude smaller than what was possible with traditional techniques
Development and Application of Extreme Ultraviolet Light Sources -- Harnessing Novel Geometries of High-Harmonic Generation and Using Photoelectron Spectroscopy to Study Nanoparticle Dynamics by Jennifer L Ellis( )

1 edition published in 2018 in English and held by 1 WorldCat member library worldwide

High-harmonic generation (HHG) is an extreme nonlinear optical process, in which visible femtosecond laser light is coherently upconverted to produce ultrashort pulses of extreme ultraviolet (EUV) or soft x-ray radiation. In this thesis, I describe both the development of new HHG sources and the application of HHG to study nanoparticle structure and dynamics. In the first section of this thesis, I discuss the development of novel geometries of HHG that enable the production of EUV light with controllable polarization. In these geometries, either two driving lasers or two high-harmonic sources are combined to give greater control over the HHG process and the resulting HHG beams. In addition to control over the polarization state, the specific geometry can have significant ramifications on the macroscopic physics or phase matching of HHG and therefore substantially modify the experimental conditions at which HHG is optimized as compared to traditional single-beam HHG. In the second section of this thesis, I will discuss using photoelectron spectroscopy to study the electronic structure and dynamics of nanoparticles. Using a nanoparticle aerosol source we were able to introduce nanoparticles of varying compositions into a photoelectron spectrometer. I will describe several experiments studying first the electronic structure and coupling of excitons in quantum dots (semiconductor nanocrystals) and then the properties and dynamics of hot electrons in nanoparticles with a wide array of compositions - ranging from ionic crystals to nanodroplets of organic liquids. The findings presented in this thesis will guide future efforts to extend the capabilities of EUV sources, develop nanoparticle-based devices, and understand how highly excited electrons behave in unconventional and previously inaccessible materials
moreShow More Titles
fewerShow Fewer Titles
Audience Level
Audience Level
  Kids General Special  
Audience level: 0.68 (from 0.56 for EUV Micros ... to 0.88 for Helicity-s ...)

Strong Field Laser Physics
Alternative Names
Henry Kapteyn American physicist

Henry Kapteyn Amerikaans natuurkundige

Henry Kapteyn US-amerikanischer Physiker (Laserphysik, Atom- und Molekülphysik)

English (20)

German (1)