Annual Report 1994

Table of Contents

Personnel
Preface
Activities

• Molecular Crystals and Polymers
  
• Photorefractive Effects
  
• Integrated Optics and Optical Frequency Conversion
  
• Molecules on Surfaces Studied by Nonlinear and Linear Optical Techniques and
  by Atomic Force Microscopy
  
• Photonics and Optical Computing
  
• Magnetic Resonance

Publications
Oral Presentations
Doctoral Theses (Ph.D.) 1994
Diploma Theses in Physics 1994

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Molecular Crystals and Polymers

• Nonlinear Optical Properties of Organic Salts Containing Thiophene and Benzothiazolium
  
• Push-pull Benzaldehyde Phenylhydrazone and Thiophen Carboxaldehyde
  
• Phenylhydrazone, two Efficient Classes of Crystalline Materials for Electro-0ptics
  
• Molecular Hyperpolarizabilities of Hydrazone Derivatives
  
• Crystal Packing Calculations on Nonlinear Optical Molecules
  
• Crystal Growth and Properties of Nonlinear Optical Derivatives of Benzaldehyde
  phenylhydrazone and DAST
  
• Growth and Morphology of Dye-Molecules in Inorganic Crystals
  
• Nonlinear Optical Investigations of Organic Crystals
  
• Cascaded Second-Order Nonlinearities in Organic and Inorganic Single Crystals
  
• Photorefractive Effects in Organic Crystals and Polymers
  
• Relaxation Processes in Main and Side Chain Polymers
  
• Synthesis of Lattice Matched Organic Crystals for the Heteroepitaxial Growth of MNBA by
  Organic Molecular Beam Epitaxy
  
• Growth of COANP, PNP and MNBA on Inorganic Substrates by
  Organic Molecular Beam Epitaxy
  
• Homoepitaxial Growth of MNBA by Organic Molecular Beam Epitaxy
  
• XPS Study of the Electron Beam Damage on Organic Thin Films

Table of Contents

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Photorefractive Effects

• Growth of KNbO₃ Crystals with Different Dopants and Reduction Treatment
  
• Temperature Dependence and Dispersion of Electro-optic and Elasto-optic Response in
  Perovskite Crystals
  
• Photorefractive Characterisation of Doped KNbO₃ Crystals for Application in
  the Red and Near Infrared
  
• Photorefractive Effects in the Ultraviolet
  
• Pulsed Photoexitation Studies in Photorefractive KNbO₃ at Ultraviolet Wavelengths
  
• Intrinsic Electro-optic and Dielectric Properties of Photorefractive
  BaTiO₃ and KNbO₃ Crystals

Table of Contents

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Integrated Optics and Optical Frequency Conversion

• Post-implantation Annealing of KNbO₃ Waveguides
  
• Nonlinear Optical Susceptibilites of Ion-implanted KNbO₃
  
• Novel Non-destructive Waveguide Loss Measurement Method
  
• Tailoring of Phase-matched Second Harmonic Generation in KNbO₃ Waveguides
  
• Frequency Doubling of AlGaAs Laser Diodes in KNbO₃ Waveguides
  
• Efficient Frequency Doubling of a Master-oscillator Power-amplifier Laser Diode in KNbO₃
  
• Picosecond Travelling Wave Optical Parametric Generator with KNbO₃
  
• High Gain Two-beam Coupling in Fe:KNbO₃ Planar Waveguides
  
• Photorefractive Two-wave Mixing with Gaussian Beams
  
• Electro-optical Waveguide Modulator on KNbO₃
  
• Molecular Beam Epitaxy of LiTaO₃
  
• Growth of Highly Conductive KTaO₃ Crystals
  
• Fabrication and Characterization of a Hybrid Thin Film Pyroelectric Detector Based on KTN
  
• XPS Study of the Oxidation of Li and Ta in an Ultrahigh Vacuum Environment

Table of Contents

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Molecules on Surfaces Studied by Nonlinear and Linear Optical Techniques and by Atomic Force Microscopy

• Domain Structure and Nonlinear Optical Properties of Mixed DCANP/CdA
  Langmuir Films
  
• In-situ Investigation of the LB Film Transfer Mechanism onto Solid Substrates Using the
  Langmuir-Blodgett and the Langmuir-Schäfer Method
  
• Phase Seggregation and Intermixing of Mixed DCANP/CdA Langmuir-Blodgett Films
  Measured by Atomic Force Microscopy
  
• Characterisation of Alkyl-silane Surface Assembly Monolayers by Means of
  Scanning Force Microscopy
  
• Syntheses of Novel Langmuir-Blodgett Molecules with Nonlinear Optical Chromophores
  
• Characterisation of Ferroelectric Surfaces and Ferroelectric Domains with
  Scanning Force Microscopy
  
• Construction of a Scanning Force Microscope for the Inspection of Liquid/gas Interfaces
  
• Build-up of an Ultra High Vacuum Scanning Force Microscope

Table of Contents

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Photonics and Optical Computing

• All Optical Associative Memory Using Photorefractive Crystals
  
• Photorefractive Grating Fixing and Enhancement in Multidomain Ferroelectric Crystals
  
• Information Storage in Ferroelectric Crystals
  
• Wavefront Reversing Mirrors for LIDAR Applications Using Optical Phase Conjugation
  
• Fidelity in Double Phase-conjugate Mirrors
  
• Self-pumped Photorefractive Phase-conjugate Mirrors for Thresholding Applications
  
• Photorefractively Squeezed Light

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Magnetic Resonance

• Investigation of the Pseudo Spin-Glass-Systems Rb_1-x(ND₄)_xD₂PO₄ (D-RADP_-x)
  
• Dynamic Properties of the Ester Methyl Group Rotation in PMMA
  {Poly(methyl methacrylate)} as Studied by Deuteron NMR
  
• Trapping of Cesium Atoms with Radiation Pressure
  
• Optically Enhanced Magnetic Resonance of Atom-Surface Interactions
  
• Experimental Observation of the Rotation Properties of Atomic Multipoles
  
• Excitation of Coherent Raman Beats in Rare Earth Solids with a Bichromatic Laser Field
  
• Large Frequency Shifts of Absorption Profiles Due to the Combination of Light-Shift,
  Optical Pumping and Magnetic Fields in Sodium Vapor
  
• "Weak Measurements" and the "The Quantum Time-Translation Machine" in a
  Classical System
  
• Interference of Scattering Pathways in Raman Heterodyne Spectroscopy of
  Multilevel Atoms