Completed Theses


Implementation and evaluation of material classification by Terahertz time-domain spectroscopy
- 11.2024


Optimierung eine modengekoppelten Diodenlasersystems zur Anwendung in nicht linearen Prozessen
- 11.2024


Emission dynamics of monolithically modelocked diode lasers
- 11.2024


Spin and polarization dynamics in coupled cavity VCSELS
- 10.2024


Characterization of a mode-locked semiconductor laser with an external resonator
- 06.2024


Effects of pulse width variation on detected photoacoustic signals
- 02.2024


Investigation of Terahertz Waveguides with a Photonic Terahertz System
- 01.2024


Investigations on Intensity and Polarization Properties of Mini-Array VCSELs
- 12.2023


Generation, Compression and Characterization of Femtosecond Laser Pulses from a Non-collinear Optical Parametric Amplifier
- 10.2023


Ultrafast Laserdiode System for Compact Frequency-Comb Generators
- 09.2023


Spectroscopic Measurements and Material Classification with Pulsed Terahertz Systems
- 08.2023


Optimizing the shape of ultrashort pulses for Thz applications using a pulseshaper controlled by an evolutionary algorithm
- 07.2023


Durability and reliability of flexible, high-efficient silicon heterojunction modules in humid environments
- 06.2023


Polarization Dynamics of Surface Grating Spin-VCSELs
- 05.2023


Simulation of a wavefront sensor for the use in gravitational wave detectors
- 04.2023


Optical simulation of THz gas spectroscopic cells
- 04.2023


Optimization of a Setup Based on a Confocal Achromatic Sensor
- 04.2023


Designing and testing of the optical setup for the laser-based weed control method
- 02.2023


Processing and Characterization of Light Emitting Structures with Electrical Spin Injection
- 11.2022


Classification of tumor tissues by means of lensless microscopy
- 11.2022


Semiconductor External Cavity Laser
- 11.2022


Investigation on Strain Measurement System Using Spin-VCSELs
- 10.2022


Investigations on Optical Methods and Post-Processing for Brain Tissue Differentation
- 10.2022


Implementation and Evaluation of a Setup for Two-Photon Polymerization
- 10.2022


Spectroscopic Measurements with Transmissive and Reflective Terahertz Pulse Systems
- 08.2022


Increasing the Distance-Range of Repeater of Repeater Less Brillouin OTDR Sensing by Optical Amplification
- 08.2022


Investigations on the influence of the photon lifetime on spin-VCSELs
- 07.2022


Implementation of a THz Measurement System for Gas Analysis
- 06.2022


Holographic Characterization of Semiconductors
- 04.2022


Characterisation and feature extraction of the topography data of laser polished, metallic surface with undercut formation
- 04.2022


Optical Simulation of THz Gas Spectroscopic Cells
- 02.2022


Analyse von photoleitenden Antennen-Arrays zur Terahertz-Strahlsteuerung
- 12.2021


Investigation of toroidal vapour bubbles during laser-induced forward transfer
- 11.2021


Quantifying the motion of diffusing fluorescent beads by single particle tracking
- 11.2021


Transmissionsspektroskopie an Halbleiterlasern
- 09.2021


Characterization of edge-emitting spin-light-emitting diodes
- 07.2021


Optische Messtechnik mit Spin-Lasern
- 07.2021


Smartphone-based lensless holographic microscopy for nanoparticle detection
- 04.2021


Golomb Ruler Based Discrete Frequency Multimodal Continuous Wave THz Spectroscopy System
- 03.2021


Modellierung und Simulation einer Messeinrichtung zur Quantifizierung metallischer Phasen im Warmbandbereich
- 10.2020


The Impact of Delay Line on Overall Performance of the THz TDS System: The Relation of Step Size with SNR and DR 
- 05.2020


Design and Implementation of Lock-in Device for Gas Sensing  
- 05.2020


Polarization-resolved investigations on VCSELs with integrated surface gratings 
- 05.2020


Confocal Laser Scanning Microscopy 
- 04.2020


Noise and Timing Jitter Analysis of Mode-Locked Pulses from an InP Photonic Integrated Circuit 
- 03.2020


Verstärkungsspektroskopie in Halbleiterlasern 
- 03.2020


Linear and Nonlinear Raman spectroscopic imaging with multivariate statistical analysis for characterization of cardiac involvement in Fabry disease 
- 2020


High-Resolution Laser Scanning Headlamps with Acousto-Optic Deflectors and Optimised Optics Design 
- 11.2019


Quasi-Time-Domain Spectroscopy incorporates Polarization-Rotated Optical Feedback 
- 06.2019


Numerical Methods for Image Quality Optimization in Digital Holographic Microscopy 
- 06.2019


Time-resolved Terahertz Measurement of Photo-injected Carrier Lifetimes in Ion-implanted Gallium Arsenide 
- 03.2019


Exploration of Gold Nanoparticle Plasmonic Characteristics
- 12.​2018


Untersuchungen zur röntgengraphischen Online-Texturanalyse in Transmissionsgeometrie mit bildgebendem Flächendetektor
- 10.​2018


Ana­ly­sis of the chirp in mo­de-lo­cked diode laser sys­tems
- 09.​2018


Diode Laser Based Terahertz Homodyne System
- 09.​2018


Theoretical simulation of green and red emission of Q:YLF solid state lasers
- 02.​2018


Ima­ging with a fs-la­ser sys­tem
- 12.​2017


Influence of plasma parameters on the degradation of a-Si:H passivation layer caused by magnetron sputtering of ITO
- 11.​2017


Merk­mal­s­ex­trak­ti­on in der op­ti­schen Ko­hä­renz­to­mo­gra­phie
- 09.​2017


Ana­ly­sis of mul­ti-pul­se ex­ci­ta­ti­on in pho­toa­coustic ima­ging
- 09.​2017


Tem­pe­ra­tur­sta­bi­li­sie­rung-Sys­tem für den op­ti­schen Tra­pez­ver­stär­ker
- 08.​2017


Pho­to­lu­mi­nes­zenz­spek­tro­sko­pie an III/V Na­no­st­ruk­tu­ren auf Si-Sub­strat
- 07.​2017


Po­la­ri­sa­ti­ons­ver­hal­ten von Spin-VC­SELn
- 07.​2017


Ultrashort Laser Pulses Generation and Amplification
- 05.​2017


Spectral domain optical coherence tomography for non-destructive testing of protection coatings on metal substrates
- 05.​2017


Characterization of Photovoltaic Laser Power Converters as Optical Power and Data Transceiver for Power-By-Light Systems
- 05.​2017


Zwei-Pho­to­nen-Mi­kro­sko­pie mit Di­oden­la­sern
- 04.​2017


Iden­ti­fi­ca­ti­on of sub­stan­ces with Raman spec­trosco­py
- 03.​2017


THz asynchronous optical sampling spectroscopy using ultrafast semiconductor lasers
- 12.​2016


Realization of a Digital Holographic Camera System with Common-Path Self-Interference
- 10.​2016


Un­ter­su­chun­gen zur Po­la­ri­sa­ti­ons­dy­na­mik an op­to­elek­tro­ni­schen Bau­ele­men­ten
- 10.​2016


Design and Characterization of Novel Terahertz Photoconductive Antennas
- 08.​2016


Cha­rak­te­ri­sie­rung von Di­oden mit ge­chirp­ten Po­ten­ti­al­fil­men
- 07.​2016


Verification of similar samples with Raman Spectroscopy
- 05.​2016


Ana­ly­sis of Se­mi­con­duc­tor Sam­ples by Laser Scan­ning Microsco­py
- 03.​2016


Laser Fault In­jec­tion on se­mi­con­duc­tor de­vices using ad­van­ced op­ti­cal me­thods
- 12.​2015


Numerical study of nonlinear dynamics of mode locked semiconductor lasers­
- 10.​2015


Entwicklung­ und Optimierung eines Sputterprozesses von Wasserstoff dotierten In2O3 Schichten­
- 10.​2015


Con­trast and re­so­lu­ti­on en­han­ce­ment me­thods for con­fo­cal mir­cosco­py
- 09.​2015


a-Si:H, a-SiO:H und µ-Si:H Schich­ten für Si­li­zi­um­dünnschicht­so­lar­zel­len
- 07.​2015


Un­ter­su­chung von Jit­ter in mo­den­ge­kop­pel­ten Halb­lei­ter-La­sern
- 05.​2015


Lin­sen­lo­ses ho­lo­gra­phi­sches Mi­kro­skop in Re­flek­ti­ons­geo­me­trie
- 05.​2015


Tera­hertz Ge­ne­ra­ti­on by Ul­tra­f­ast Se­mi­con­duc­tor La­sers
- 04.​2015


Terahertz volume inspection with different antenna configurations
- 02.​2015


Pa­ra­me­ter­cha­rak­te­ri­sie­rung und Si­mu­la­ti­on mo­den­ge­kop­pel­ter Halb­lei­ter­la­ser
- 11.​2014


Ver­fah­ren zur Chirp­kom­pen­sa­ti­on in mo­den­ge­kop­pel­ten Halb­lei­ter­la­sern
- 10.​2014


Simulation von Silizium-Dünnschicht-Solarzellen auf Basis von a-SiO:H/ a-Si:H/ µc-Si:H
- 10.​2014


Di­gi­tal ho­lo­gra­phic microsco­py
- 10.​2014


Cha­rak­te­ri­sie­rung von Mi­kro­par­ti­keln mit dem lin­sen­lo­sen Mi­kro­skop
- 04.​2014


Cha­rak­te­ri­sie­rung des Lin­sen­lo­sen Mi­kro­skops
- 04.​2014


Sta­bi­li­täts­op­ti­mier­te re­so­na­tor­in­ter­ne pha­sen­mo­du­la­ti­on eines mo­den­ge­kop­pel­ten Halb­lei­ter­la­ser­sys­tems
- 01.​2014


In­jek­ti­on, Re­la­xa­ti­on und De­tek­ti­on spin­po­la­ri­sier­ter La­dungs­trä­ger
- 12.​2013


Spin- und Po­la­ri­sa­ti­ons­dy­na­mik op­to­elek­tro­ni­scher Bau­ele­men­te
- 11.​2013


Ein­satz von Mus­ter­er­ken­nungs­al­go­rith­men für Sub­stan­zi­den­ti­fi­zie­rung mit­tels spek­tro­sko­pi­scher op­ti­scher Ko­hä­renz­to­mo­gra­fie
- 11.​2013


Col­li­ding pulse mo­de­lo­cked Laser für die THz Er­zeu­gung
- 10.​2013


Op­ti­mie­rung eines kon­fo­ka­len Mi­kro­skops für die Mi­kro­pho­to­lu­mi­nes­zenz­spek­tro­sko­pie
- 10.​2013


La­dungs­trä­ger- und Spin­dy­na­mik in Halb­lei­tern
- 09.​2013


Absolute phase measurements by multi-wavelength digital holography and coherence tomography
- 09.​2013


To­mo­gra­fie mit 300 GHz FUCW-Scan­ner
- 08.​2013


Cha­rac­te­ri­sa­ti­on of phar­maceu­ti­cals with THz-Ti­me-Do­main-Spec­trosco­py
- 08.​2013


Am­pli­tu­den- und Pha­sen­ma­ni­pu­la­ti­on eines mo­den­ge­kop­pel­ten Halb­lei­ter­la­sers durch einen Puls­for­mer
- 05.​2013


Op­ti­mie­rung von Sput­ter­pro­zes­sen für ITO-Schich­ten auf Si­li­zi­um
- 05.​2013


Me­tho­den zur Ve­ri­fi­ka­ti­on von Lu­mi­nes­zenz­mar­kern
- 05.​2013


Pha­sen- und Am­pli­tu­den­ma­ni­pu­la­ti­on eines mo­den­ge­kop­pel­ten Halb­lei­ter­la­ser­sys­tems
- 04.​2013


Kon­fo­ka­le Mi­kro­sko­pie an III/V-Halb­lei­tern
- 04.​2013


Op­ti­cal Spec­trosco­py on Ga(NAsP)/GaP he­te­ro-struc­tu­res on Si­li­con
- 03.​2013


An­pas­sung eines rech­ner­ge­steu­er­ten elek­tro-op­ti­schen Mess­sys­tems zur Geo­me­trie­über­wa­chung für den Ein­satz in einem me­cha­nisch wei­chen Schwimm­dock
- 02.​2013


Op­ti­mie­rung eines Sys­tems für die op­ti­sche Ko­hä­renz­to­mo­gra­fie
- 01.​2013


DMD-gesteuerter 2-Farben-Laser für die THz-Generation
- 10.​2012


Dynamics of Mode-Locked Multisection Multi-Quantum Well Semiconductor Laser Diodes
- 08.​2012


Verwendung von Indiumzinnoxid in Heterosolarzellen
- 05.​2012


Herstellung und Charakterisierung von TriPlex Wellenleitern mit geringer Dämpfung
- 04.​2012


La­ser­di­oden­sys­te­me für die Ein­zel­schussho­lo­gra­fie
- 02.​2012


THz Er­zeu­gung mit Col­li­ding Pulse Mo­de­lo­cked Diode La­sers
- 02.​2012


Spi­nin­jek­ti­on und Spin­re­la­xa­ti­on in Spin-LEDs
- 11.​2011


Auslegung, Erstellung und Untersuchung gütegeschalteter Minilaser mit einer Pulsdauer im Bereich von 1ns
- 11.​2011


Tie­fen­ge­fil­ter­te di­gi­ta­le Ho­lo­gra­phie
- 10.​2011


In­tel­li­gen­te Op­ti­mie­rung eines pas­siv mo­den­ge­kop­pel­ten Halb­lei­ter­la­ser­sys­tems durch einen Evo­lu­tio­nä­ren Al­go­rith­mus
- 09.​2011


Op­ti­sche Cha­rak­te­ri­sie­rung von Ga(NAsP) Halb­lei­ter­struk­tu­ren auf Si
- 08.​2011


Ent­wick­lung eines durch­stimm­ba­ren Halb­lei­ter­la­sers für die Ein­zel­schussho­lo­gra­fie
- 08.​2011


THz Ab­sorp­ti­ons­mes­sun­gen mit­tels Quasi Time Do­main Spek­tro­sko­pie
- 07.​2011


Op­ti­mie­rung eines kom­pak­ten fs-MO­PA-Sys­tems auf Halb­lei­ter­ba­sis
- 07.​2011


EMA kon­trol­lier­te Mehr­far­ben­la­ser
- 07.​2011


Konfokale optische Bildgebung mit kohärenter Filterung
- 02.​2011


Aufbau eines kompakten Kurzpuls-Diodenlasersystems
- 12.​2010


Monitoring of laser beam welding with optical sensors and cognitive data processing
- 11.​2010


Untersuchung von Konzepten zur digitalen Holographie
- 10.​2010


Spin Injection and Spin Relaxation in Optoelectronic Devices
- 10.​2010


Untersuchungen zum Wellenlängenchirp in modengekoppelten Diodenlasern
- 09.​2010


Entwicklung eines Spektralradarsystems für die biomedizinische Bildgebung
- 05.​2010


Aufbau eines Applikators für die frequenzbasierte optische Kohärenztomographie
- 03.​2010


Untersuchungen zur aktiven und passiven Modenkopplung von Diodenlasern
- 01.​2010


Untersuchungen zur dreidimensionalen Bildgebung mit Holographie
- 12.​2009


Postal Address

Ruhr-University Bochum
Faculty of Electrical Engineering
and Information Technology
Photonics and Terahertz Technology
Postbox ID 16
Universitätsstraße 150
D-44801 Bochum

Contact

Office  
Room: ID 04/327
Te­l.: (+49) (0) 234 32 - 23051
Fax: (+49) (0) 234 32 - 14167
E-Mail: ptt+office(at)rub.de
RUB campus map & travel instructions

Chair Holder

Prof. Dr.-Ing. Martin Hofmann
Building: ID 04/329
Te­l.: (+49) (0) 234 32 - 22259
Fax: (+49) (0) 234 32 - 14167
E-Mail: martin.hofmann(at)rub.de

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