The lectures consist of 4 SWh. (lectures and exercises). The lectures are suitable for students from 5 semester of "Nanostructure Science Course" (obligatory elective cource b/d, b/e, b/f) and "Physics Diploma" (elective cource S-Schein). Basic knowledge of Solid State Physics like "Introduction to the experimental physics IV" or "Applied semiconductor physics" are required.
The lectures present the fundamentals of laser physics based on semiconductor lasers and goes deeper into the current research of the laser device. The following topics will be discussed in the basic part of the lectures:

  • spontaneous and stimulated emission
  • spectral amplification
  • threshold conditions
  • Fabry-Perot resonator
  • layers and core of the waveguide
  • feedback and bragg grating
  • theory of coupled modes
  • transfer matrix theory
  • high frequency properties (modulation properties, resonance frequency, chirp and line thickness)

The application area of the semiconductor lasers in the last 10 years was immensely broadened. It leads to mutiplicity of new applications and application possibilities, which will be discussed during the lectures and in the special topics of the seminar presentations. Among other things the nano-structuring methods for material and component structuring will be heightened in the future. Among other the following will be discussed:

  • vertical emitting laser (VCSEL)
  • disc and ring lasers
  • microaser
  • quantum dot laser
  • UV-laser based on GaInN
  • quantum cascade laser
  • laser based on photonic crystals
  • single photon source


In the lectures will be discussed also basic principles of the devices, fabrications methods and possible applications.


Con­tent of the lec­tu­res

The lectures consist of 4 SWh. (lectures and exercises). The lectures are suitable for students from 5. Semester of "Nanostructure Science Course" and "Physics Diploma" (Subject: Experimental Physics or elective course). Basic knowledge of Solid State Physics is desirable. The basics of Solid State Physics will be repeated to the extent of understanding the Semiconductor Physics.

The lectures present the basics of Semiconductor Physics and discuss examples of the most important devices in electronics, optoelectronics and photonics.

The following topics will be discussed:

  • Crystal structures
  • Energy bands
  • Spectrum of the phonons
  • Population statistics
  • Doping and charge carrier transfer
  • Bedding phenomena
  • p-n Junktion
  • p-n Diodes
  • Bipolar transistors
  • Thyristor
  • Field effect
  • Schottky-Diode
  • FET
  • Integrated circuits
  • Storage devices
  • Tunnel effect
  • Tunnel diodes
  • Microwave devices
  • Optical properties
  • Laser principle
  • Wave distribution and guiding
  • Photon detectors
  • Light Emitting Diode
  • High-power and communication lasers
  • Small dimensional electronic systems
  • Single electron transistor
  • Quantum cascade laser
  • Quantum dot laser
  • Photonic crystals and micro resonators
  • Single photon source

The lectures consist of 3 SWh. The lectures are suitable for students from 8. or later semester of "Nanostructure Science Course" (required subject) and from 6. or later semester of "Physics Diploma" (elective course). Basic knowledge of Experimental Physics, Solid State Physics and Quantum mechanics are required.

 

The second part of the lectures (SS) continues the lectures form WS and discuss multiple examples the applications of nanostructures in different aspects

The next themen will be discussed:

  1. Introduction to the applications for the nanostructures
  2. Applications in the nanoelectronics 
    • single electron devices
    • Josephson circuits
    • quantum transport devices
    • quantum computer
    • applications of the carbon nanotubes
    • molecular electronics
    • single molecule transistor
    • etc.
  3. Application of the nanostructures in the new data storage devices 
    • DRAM,FRAM,MRAM
    • magneto-optical data storage
    • phase changing materials
    • PCRAM
    • holographic methods
    • organic data storage devices
    • AFM-based method
    • etc.
  4. Nanostruktures in optoelectronics 
    • quantum dot laser
    • quantum dots amplifier
    • quantum cascade laser
  5. Nanophotonics 
    • Micro laser
    • Photonic wires
    • single photonic source

The lectures consist of 3 SWh. The lectures are suitable for students from 7. or later semester of "Nanostructure Science Course" (required subject) and from 5. or later semester of "Physics master" (elective course). Basic knowledge of experimental physics, solid state physics and quantum mechanics are required. 

The first of the two lecture parts (WS) gives knowledge about the physical properties of the nanostructures. The lectures go into the dimension dependent physical properties of solid materials and the dominating influence of quantum mechanical principles for description of the phenomena. Further fabrication and characterization methods for nanostructures will be discussed. The second part (in SS) deals with the application examples of nano-structured materials in the nanomechanics, nanoelectronics, optoelctronics and nanophotonics. 

Content of the lectures

  1. Overview

  2. Introduction

    • fundamental thoughts and differentiation from atomic physic and continuum physic

    • overview of the fabrication methods (top-down, bottom-up and others)

    • overview of the characterization methods

    • overview of the application possibilities

  3. Physical fundamentals

    • mechanics and thermodynamics

    • electrodynamics

    • quantum mechanics

    • atomic physics and physics of the moleculs

    • solid state physics

  4. Mechanical and thermal properties of nanostructured materials

    • mechanical properties of the nanostructures

    • thermal properties of the nanoparticles and clusters of the moleculs

  5. Electrical and magnetic properties of the nanostructured solids

    • theory of the low-dimensional electron systems (quqntum films, quantum wires, quantum dots)

    • electron transport in nanostructured semiconductors (tunnel effect, coulomb blockade and others)

    • properties of nanostructured magnetic materials and particles

  6. Optical properties of the nanostructured solids

    • interaction of the nanostructured semiconductors with electromagnetic radiation

    • nanostructured photonic systems (photonic crystals, microcavities and others)

    • quantum dot structures in optical resonators

  7. Nanostructuring techniques

    • top-down methods (lithography, nanoimprint, AFM and others)

    • bottom-up methods (self growth methods, Sol-Gel, chemical methods)

  8. Characterization methods for nanostructures

    • scanning electron- and transmission microscopy

    • special scanning electron methods (AFM, STM, magnet. AFM, SNOM and others)

    • analytical methods (XRD, EBID, FIB, SIMS and others)

  9. Introduction in the application of nanostructures

  10. Nanoparticles and molecule clusters

  11. Nanomechanics

  12. Nanoelectronics

  13. Molacular electronics

  14. Nanostructures in the optoelectronics

  15. Nanophotonics


Moodle-Kurs zur Lehrveranstaltung 1018.0150 Einführung in die molekulare Biophysik für Nanostrukturwissenschaften.

Der Moodlekurs dient dem Austausch der Seminarvorträge sowie der Bereitstellung von Lehrmaterial.