Ph.D. Theses

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2020-07-02
09:40
[PUBDB-2020-02529] Dissertation / PhD Thesis

Motion manipulation and broadband microwavespectroscopic studies of molecules with a largedipole moment
171 pp. () = Dissertation, Hamburg Universität, 2018
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2020-06-27
14:08
[PUBDB-2020-02483] Dissertation / PhD Thesis

Novel ultrafast fiber laser sources utilizing fiber nonlinearities
19-128 () = Dissertation, Universität Hamburg, 2020
Due to the lack of proper active gain media, mid-IR frequency combs in the molecular “fingerprint” region are normally implemented by difference frequency generation (DFG) process inside nonlinear crystals. In addition to granting an access to the long-wave (>10 μm) side of the mid-IR spectrum, DFG also offers a wide wavelength tunability, a high-repetition-rate (HRR) operation (>10 MHz), and a passive cancelation of the carrier-envelope phase offset, all of which enable a simplified experimental configuration for constructing mid-IR frequency combs.Currently, DFG-based mid-IR frequency combs especially at wavelengths beyond 10 μm suffer from insufficient available power, mainly caused by un-optimized wavelength-shifting processes and an inefficient parametric interaction of the DFG process. [...]
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2020-06-26
10:46
[PUBDB-2020-02479] Book/Dissertation / PhD Thesis

Oblique-incidence deposition of ferromagnetic thin films and their application in magnetoresistive sensors
245 pp. () = Dissertation, University of Hamburg, 2020
Magnetic field sensors can be used for compass applications, to measure electrical cur-rents or to determine position and speed of objects. Layered thin-film sensors based onthe giant or tunneling magnetoresistance (GMR or TMR) are predestined for portabledevices where their small size, high effect strength and low power consumption are crucial.Through the use of oblique-incidence deposition (OID) it is possible to tailor the magneticand magnetoresistive properties of the sensors in an easy-accessible and flexible way tothe needs of an application. [...]
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2020-06-26
09:28
[PUBDB-2020-02478] Dissertation / PhD Thesis

Modeling and Numerical Studies ofLaser-Based Terahertz Generation
132 pp. () = Dissertation, University of Hamburg, 2020
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2020-06-24
09:57
[PUBDB-2020-02465] Dissertation / PhD Thesis

Self-assembly of confined liquid crystals: from nanoscale physics to designing photonic metamaterials
TUHH Universitätsbibliothek 1 - 114 () [10.15480/882.2787] = Dissertation, Hamburg University of Technology, 2020  GO
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2020-06-19
20:00
[PUBDB-2020-02431] Dissertation / PhD Thesis

Alignment and Orientation of Complex Molecules
154 pages () = Dissertation, University of Hamburg, 2020
Aligning and orienting molecules with external electric fields has long been of greatinterest in physical chemistry. Among the principle applications are various singlemolecule imaging techniques employed with the goal to determine transient molecularstructures during dynamical processes. [...]
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2020-06-18
10:07
OpenAccess [PUBDB-2020-02399] Book/Dissertation / PhD Thesis

Magnon-Photon Interactions: From X-ray Mapping of Standing Spin Waves to Interference in Cavity Electromagnonics
Verlag Dr. Hut 147 pp. () [10.3204/PUBDB-2020-02399] = Dissertation, University of Hamburg, 2020  GO
This thesis describes two types of light-matter interactions in magnetic thin films. In the first part, it focuses on the resonant interaction of hard X-rays with 57Fe nuclei in a microstructured magnetic element. [...]
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2020-06-16
11:17
[PUBDB-2020-02374] Dissertation / PhD Thesis

The measurement of W± boson charge asymmetry at √s = 13 TeV with the CMS detector using the 2015 data set and a global QCD analysis on this asymmetry.
202 pp. () = Dissertation, University of Hamburg, 2020
This thesis presents physics results accomplished during the 2017-2019 years in the CMS experiment. Three main contributions are discussed: a measurement of diamond sensors for the BCM1F luminometer and monitoring of its performance during the whole Run 2; a measurement of differential cross-sections of W± boson production in the muon channel as a function of pseudorapidity at √s = 13 TeV using 2015 data set, and extraction of W± boson charge asymmetry values; a global QCD analysis with the obtained asymmetry results. [...]
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2020-06-12
09:41
[PUBDB-2020-02339] Dissertation / PhD Thesis

Detectors for functional medical imaging
172 pp. () = Dissertation, University of Hamburg, 2019
The work in this thesis deals with two functional medical imaging methods, i.e. positron emission tomography (PET) and X-ray uorescence imaging (XFI). [...]
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2020-06-10
17:06
OpenAccess [PUBDB-2020-02327] Dissertation / PhD Thesis

Design and commissioning of an XUV and soft x-ray FEL pulse shaper
Hamburg : DESY 1-136 () [10.3204/PUBDB-2020-02327] = Dissertation, University of Hamburg, 2018  GO
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