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  • 1
    Online-Ressource
    Online-Ressource
    Cham :Springer International Publishing :
    UID:
    almahu_9949387914302882
    Umfang: XV, 121 p. 66 illus., 62 illus. in color. , online resource.
    Ausgabe: 1st ed. 2022.
    ISBN: 9783031153280
    Serie: Springer Theses, Recognizing Outstanding Ph.D. Research,
    Inhalt: This thesis investigates the detection efficiency of field-resolved measurements of ultrashort mid-infrared waves via electro-optic sampling for the first time. Employing high-power gate pulses and phase-matched upconversion in thick nonlinear crystals, unprecedented efficiencies are achieved for octave-spanning fields in this wavelength range. In combination with state-of-the art, high-power, ultrashort mid-infrared sources, this allows to demonstrate a new regime of linear detection dynamic range for field strengths from mV/cm to MV/cm-levels. These results crucially contribute to the development of field-resolved spectrometers for early disease detection, as fundamental vibrational modes of (bio-)molecules lie in the investigated spectral range. The results are discussed and compared with previous sensitivity records for electric-field measurements and reference is made to related implementations of the described characterization technique. Including a detailed theoretical description and simulation results, the work elucidates crucial scaling laws, characteristics and limitations. The thesis will thus serve as an educational introduction to the topic of field-resolved measurements using electro-optic sampling, giving detailed instructions on simulations and experimental implementations. At the same time, it showcases the state-of-the-art in terms of detection sensitivity for characterizing mid-infrared waves.
    Anmerkung: Introduction and Motivation -- Theoretical Background -- Simulation Results for EOS -- Experimental Results -- Conclusion and Outlook.
    In: Springer Nature eBook
    Weitere Ausg.: Printed edition: ISBN 9783031153273
    Weitere Ausg.: Printed edition: ISBN 9783031153297
    Weitere Ausg.: Printed edition: ISBN 9783031153303
    Sprache: Englisch
    URL: Volltext  (URL des Erstveröffentlichers)
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 2
    Online-Ressource
    Online-Ressource
    Cham, Switzerland :Springer,
    UID:
    almafu_9960901274302883
    Umfang: 1 online resource (131 pages)
    ISBN: 9783031153280
    Serie: Springer theses
    Anmerkung: "Doctoral Thesis accepted by Ludwig Maximilians University Munich, Garching, Germany."--Title page. , Intro -- Supervisor's Foreword -- Abstract -- Acknowledgements -- Contents -- Acronyms -- 1 Introduction and Motivation -- References -- 2 Theoretical Background -- 2.1 Linear Optics -- 2.2 Perturbative Nonlinear Optics -- 2.3 Theoretical Description of EOS -- 2.3.1 Sum- and Difference-Frequency Generation -- 2.3.2 Pockels-Effect -- 2.3.3 Comparison to Time-Integrating MIR Characterization Techniques -- 2.4 Nonlinear Crystals and Phasematching -- 2.5 Noise in Balanced Detection -- 2.6 Techniques to Improve the EOS Dynamic Range and Sensitivity -- References -- 3 Simulation Results for EOS -- 3.1 Wavelength-Dependent EOS Signal for Thick Detection Crystals -- 3.2 MIR Depletion and Amplification for Phasematching SFG or DFG -- 3.3 Temporal and Spectral Transfer Functions -- 3.4 Detection Bandwidths for Different Gate Pulse Wavelengths -- 3.5 Pre-chirping of 1550-nm Gate Pulses -- References -- 4 Experimental Results -- 4.1 Optimization and Characterization of EOS with 1-m Gate Pulses -- 4.2 Dynamic Range and Background-Reduced Measurements -- 4.3 Bandwidth-Efficiency Trade-Off -- 4.4 Multiple Reflections from GaSe -- 4.5 Application of High-DR EOS: Waveform Stability Analysis -- 4.6 EOS with 1550-nm Gate Pulses -- 4.7 EOS with 2-m Gate Pulses -- 4.8 Optimized 2-m EOS: Reaching Percent-Level Detection Efficiency -- 4.9 Linearity of Large Depletion EOS Measurements -- References -- 5 Conclusion and Outlook -- References -- Appendix A Data Archiving -- Appendix B Setup of the 2-m EOS -- Appendix C Curriculum Vitae.
    Weitere Ausg.: Print version: Hofer, Christina Detection Efficiency and Bandwidth Optimized Electro-Optic Sampling of Mid-Infrared Waves Cham : Springer International Publishing AG,c2022 ISBN 9783031153273
    Sprache: Englisch
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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