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Showing 1 to 20 of 236 for “"harmonic generation"”.

  1. Modelling of capillary high harmonic generation

    Rogers, Edward Thomas FossUniversity of Southampton2008

    High harmonic generation (HHG) is now an accepted method for laboratory based generation of XUV and soft x-ray light. HHG produces pulses that are highly coherent, with a pulse length in the femtosecond or attosecond timescales. To predict the XUV output from an HHG experiment, both the emission …

    soton Repository record

  2. Passive harmonic generation at spring contacts

    Yang, SenMissouri University of Science and Technology

    <p>"In the first paper, the RF passive harmonic generation phenomenon on the spring contact is studied. A spring contact harmonic generation measurement system is developed. The factors that may have an impact on the spring contact harmonic generation, such as contact material, contact force, and …

    must-thes Repository record

  3. Third harmonic generation microscopy and applications

    Chadwick, RebeccaColorado School of Mines. Arthur Lakes Library2006

    Includes bibliographical references (pages 40-41).

    colo-mines Repository record

  4. Second harmonic generation in novel optical waveguides

    Wijeratne, I.City University London2013

    Second Harmonic Generation has traditionally been restricted to crystals; however, due to the development of highly sophisticated fabrication technology, poling and phase matching techniques, it has now become feasible in glass fibres and waveguides which are widely used in nonlinear optics. For …

    city-london Repository record

  5. Limits of long wavelength High Harmonic Generation

    Bhardwaj, SiddharthMassachusetts Institute of Technology2010

    … for long wavelength driver pulses for High Harmonic Generation (HHG). The advantage of longer wavelengths is that the cut-off of the harmonic spectrum can be increased without the need for large electric fields. Large electric field is undesirable because it leads to large plasma generation …

    mit Repository record

  6. Limits of High Harmonic Generation conversion efficiency

    Gkortsas, Vasileios-MariosMassachusetts Institute of Technology2013

    High Harmonic Generation (HHG) is a fascinating phenomenon from both fundamental and technological point of view. It enables the generation of attosecond pulses and can have applications in EUV lithography and bio-microscopy. HHG can be described by the Three Step Model (TSM), due to the three …

    mit Repository record

  7. Millimeter-Wave and Sub-Terahertz Parametric Harmonic Generation

    Zhang, NanSchulich School of Engineering2021

    The theory of parametric harmonic generation is described in this thesis. It is shown that for Nth-order harmonic generation the time-varying parameter (P), such as elastance (S), capacitance (C), conductance (G), or resistance (R), exhibits N−1 periods of a sine wave under one sinusoidal pumping …

    calgary Repository record

  8. Harmonic Generation in Hcn by Multiple Quantum Conversion

    Akitt, Donald PaulUniversity of Illinois at Urbana-Champaign2014

    Made available in DSpace on 2014-12-08T22:23:38Z (GMT). No. of bitstreams: 1 6503165.pdf: 1894906 bytes, checksum: e32f27236162f5ccdfe0121aea417c3a (MD5) Previous issue date: 1964

    uiuc Repository record

  9. A Thin Film Coupler for Microwave Harmonic Generation

    Heeren, Robert GeneUniversity of Illinois at Urbana-Champaign2014

    Made available in DSpace on 2014-12-08T22:24:30Z (GMT). No. of bitstreams: 1 6910720.pdf: 3029030 bytes, checksum: c603ea8cc9af5c5868e8808140aca318 (MD5) Previous issue date: 1968

    uiuc Repository record

  10. Generation of squeezed light via second harmonic generation

    Nee, Phillip TsefungMassachusetts Institute of Technology1994

    Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1994.

    mit Repository record

  11. Terahertz Second-Harmonic Generation in Extreme-Confinement Cavities

    Ateshian, LamiaMassachusetts Institute of Technology2021

    … radiation spanning the THz gap by second-harmonic generation (SHG) in low-loss dielectric structures, starting from the ∼100 GHz range. For this purpose, we present hybrid THz-band dielectric cavity designs that combine (1) nonlinear materials enhanced by phonon resonances with (2) extreme …

    mit Repository record

  12. Second Harmonic Generation – A Novel Approach in Retinal Imaging

    Sharoukhov, Denis YThe Graduate School and University Center of The City University of New York2018

    <p>Here we present the utilization of Second Harmonic Generation (SHG) for label-free imaging of microtubules (MTs) in the retinal nerve fiber layer (RNFL). MTs are an important part of axonal cytoskeleton, providing structural support and serving as a railroad in intracellular transport. We …

    cuny-grad Repository record

  13. Quantum Electrodynamic Theory of Optical High-Order Harmonic Generation

    Gao, JuUniversity of Illinois at Urbana-Champaign2015

    … to utilize more energetic photoelectrons to the harmonic generation process.

    uiuc Repository record

  14. Mueller-matrix-based analysis for second-harmonic generation imaging

    Okoro, Chukwuemeka OnyekereUniversity of Illinois at Urbana-Champaign2015

    Second-harmonic generation microscopy takes advantage of second-order nonlinear property for imaging of biological structures. Invoking quantitative image analysis techniques facilitates the assessment of tissues in varying states. This thesis presents a quantitative description of the relative …

    uiuc Repository record

  15. Application of beam shaping in second-harmonic generation microscopy

    Kabir, Mohammad MahfuzulUniversity of Illinois at Urbana-Champaign2019

    Second-harmonic generation (SHG) microscopy, based on the second-order nonlinear susceptibility, has been established as a sub-micrometer resolution, label-free optical imaging method. Due to its selectivity for non-centrosymmetric structures and inherent confocality, SHG imaging has been used to …

    uiuc Repository record

  16. Wide-field Polarimetric Second Harmonic Generation Microscopy for Histology Imaging

    Uribe Castano, Leonardo Jose2023

    … several contrast mechanisms including second harmonic generation (SHG), third harmonic generation (THG) and multiphoton excitation fluorescence (MPEF) that can contribute with additional information to hematoxylin and eosin (H&E) stained tissue histopathology, which is used as a gold standard …

    toronto-retro Repository record

  17. UNDERSTANDING AND EVALUATING CRYSTAL POLYMORPHISM BY SECOND HARMONIC GENERATION MICROSCOPY

    Chowdhury, Azhad Chowdhury

    … to trap the rare metastable polymorphs. Second harmonic generation microscopy (SHG) possesses enough sensitivity to detect sub-micrometer size chiral crystals selectively and has the potential for use in crystal nucleation studies.

    purdue-thes Repository record

  18. Direct Observation of Laser Filamentation in High-Order Harmonic Generation

    Painter, John Charles2006

    … intense laser pulse as it generates high-order harmonics in a long gas cell, filled with 80 torr of helium. A thin foil separates the gas-filled region of the cell from a subsequent evacuated region. The exit plane of the gas cell can be scanned along the laser axis so that the evolution of the …

    byu Repository record

  19. Third Harmonic Generation as a Probe of Ultrafast Phase Transitions

    Gundrum, Bryan CharlesUniversity of Illinois at Urbana-Champaign2015

    Also presented are initial efforts to measure the solidification rate of metal samples using linear methods, including the design and operation of a deferential photo detector as well as the first quantitative measurements of the thermal conductance of metal-metal interfaces. The room temperature …

    uiuc Repository record

  20. Application of quantitative second-harmonic generation imaging to dynamic systems

    Kabir, MohammadUniversity of Illinois at Urbana-Champaign2014

    … report the development of a quantitative second harmonic generation technique that quantifies the 2 dimensional spatial orientation of collagen fiber samples under dynamic conditions. The technique is demonstrated both for a well aligned tendon sample and a randomly aligned, sparsely distributed …

    uiuc Repository record

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