ADVANCES IN NANOPHOTONICS - 2020/1

Module Overview

The module addresses the advanced physics and technology of photonic nanostructures, where photons and/or electrons are spatially confined to dimensions comparable to or smaller than their wavelength. The propagation of the light and its interaction with matter are determined by factors such as length scales, periodicity, and dimensionality, and lead to phenomena not observed in nature. This is a rapidly developing field where fundamental science and technological advance hand-in-hand, and the module aims to demonstrate how new science drives new technologies that have a significant impact on society, for example through energy production, communications, and healthcare.

Module provider

Physics

Module Leader

FLORESCU Marian (Physics)

Number of Credits: 15

ECTS Credits: 7.5

Framework: FHEQ Level 7

Module cap (Maximum number of students): N/A

Module Availability

Semester 2

Prerequisites / Co-requisites

None.

Module content

Indicative content includes:

A. Introduction and Review

1. Introduction

• 
  What is photonics? What is nanotechnology?
  


• 
  Description of module: organisation, teaching methods, assessment
  


• 
  A look ahead: nanophotonics and the quantum playground
  

 

2. Brief review of physics of photons and electrons

These review lectures briefly summarize the minimum background in Electromagnetism (EM) and Quantum Mechanics (QM) required for this module.  They also introduce concepts, methodology and nomenclature to be followed in the module.

• 
  Wave equations: propagation, dispersion, velocities, impedance
  


• 
  Interfaces, barriers and tunnelling
  


• 
  Confinement: total internal reflection, standing waves, waveguides and resonant cavities
  


• 
  Materials: dielectrics, metals, and semiconductors
  


• 
  EM waves: Maxwell’s equations and EM wave equation, in dielectrics and metals
  


• 
  Electron waves and Schrödinger equation
  


• 
  Semi-classical interaction of light and atoms
  


• 
  Light emission and lasers
  

 

3. Introduction to optical resonators and micro-cavities

• 
  Light emission and lasers
  


• 
  Losses and Quality (Q) factor of a resonator
  


• Finesse, re-spectral range, and mode volume


• Fabry-Perot resonators


• 'Whispering gallery' micro cavities (disks, rings, spheres, tori)

 

4.  Waves in periodic media

• Electromagnetic propagation in periodic media: Floquet (Bloch) theorem, Bloch waves, and band structure


• Analytical solution of wave equation in linear non-dispersive periodic medium


• 
  Distributed Bragg Reflectors, bandgaps and minibands
  


• 
  Overview of computational methods: Fourier methods, Transfer Matrix, FDTD
  


• 
  Electron waves in semiconductors, heterostructures and super lattices
  
   
  

B.  Light in Nanostructures

 

5. Photonic crystals

• 
  Photonics crystals and photonic bandgaps (PBG) in periodic, quasiperiodic and disordered dielectric structures
  


• 
  Dispersion of 1D photonic crystal
  


• 
  Natural and man-made photonic crystals; from butterfly wings to “holey fibres”
  


• 
  2D and 3D PBGs
  


• 
  Defects, cavities and photonic crystal resonators
  


• 
  PBGs for functional photonic components
  


• 
  Dispersion control and ‘slow light’
  

 

6. Meta materials and negative refraction

• 
  Conditions for negative refraction
  


• 
  Consequences for refraction and Doppler shift
  


• 
  Materials and structures for negative refraction
  


• 
  Scaling of operation frequency with size
  


• 
  An application (selected from: superlens, invisibility cloak, trapped light)
  


• 
  Meta materials and negative refraction
  

 

7. Plasmonics

• 
  Bulk and surface plasmons: derivation of dispersion relation
  


• 
  Plasmons in nanoparticles: resonance and field enhancement
  


• 
  Plasmonic cavities
  


• 
  Applications: from solar cells to cancer therapy 
  

 

C.  Electrons in Nanostructures

8. Low-dimensional semiconductors

• 
  Density of states, dimensionality and quantum electronics
  


• 
  Nanostructures as ‘artificial atoms’
  


• 
  Excitons and Stark shifts
  

 

9. Application to Photovoltaics

• 
  Principles (not details) of applying concepts from nanophotonics to improve efficiency of photovoltaic solar cells
  

 

10. Nanophotonics for Quantum Optics

• 
  Second quantisation approach to light-matter interactions
  


• 
  Nanophotonic structures for coherent, nonlinear and quantum optics
  

 

11. Research exercise on latest developments in an advanced topic in nanophotonics. Indicative examples:

• 
  Quantum dots as artificial atoms
  


• 
  Thresholdless laser
  


• 
  Coupled microcavity rays
  


• 
  Nonlinear ptics(e.g., aan lasers)
  


• 
  Single and ntangled poton sourcs
  


• 
  Single toquantumdot laser
  


• 
  Engineering optimisation and manufacturability of advanced laser structures
  

 

Assessment pattern

Alternative Assessment

Alternative Assessment: Where an alternative assessment is needed for an individual student, a suitably scaled individual research/design project will be offered, and assessed by means of an individually authored technical report, representing 30% of the module mark. It will not be possible to achieve the learning outcomes related to group research and oral presentation.

Assessment Strategy

The assessment strategy is designed to provide students with the opportunity to demonstrate:

(1) technical knowledge and understanding of the core principles of nanophotonics, and

(2) understanding of an advanced aspect of nanophotonics achieved through a research exercise, and

(3) skills in group working and technical reporting.

 

Thus, the summative assessment for this module consists of:

• 
  final exam on core principles of nanophotonics (2 hours)
  


• 
  group-authored technical report (6 pages max) on advanced nanophotonics
  


• 
  individual oral presentation (7 mins max)
  

Due to their nature, part of the coursework (oral presentation and contribution to group effort) will not be anonymously marked.

Formative assessment and feedback

Problem sheets on the material delivered in lectures will be available, with follow-up tutorials, which allow the students to test their understanding of course material. Model answers and verbal feedback are provided to allow the students to assess their progress.  For the coursework, a brief progress report and completion plan, and a dissemination plan, are due 3 and 1 weeks respectively before the submission deadline, each followed by in-class feedback to each group.

 

Module aims

• provide students with an overview of photonics and nanotechnology, sufficient to enter technical employment or pursue further research in these fields.
• expose students to examples of latest developments in a fast-moving field.
• provide practice in the application of known physical concepts and mathematical techniques to new situations.
• provide practice in applying research methodologies to an unfamiliar field
• improve professional skills in group working and technical reporting.

Learning outcomes

Methods of Teaching / Learning

The learning and teaching strategy is designed to:

• 
  deliver core material in a familiar format of traditional lectures, supported by occcasional tutorials and students’ reading;
  


• 
  incorporate a synoptic element: integrating understanding gained in compulsory modules on electromagnetism, quantum mechanics and solid-state physics, and refreshing some key physical concepts in preparation for employment or further studies after graduation;
  


• 
  provide a taste of R&D perfomed in a small group, in preparation for environments likely to be encountered post-graduation;
  


• 
  provide an experience of written and oral presentation of technical material, typical of what might be required in technical employment or postgraduate research.
  

 

The learning and teaching methods include:

• 
  3 hours lectures/tutorials per week, including:
  


• 
  7 hours supervised group work (1 hour foundation plus 2 hours per week x3)
  


• 
  monitoring group progress (with intervention where required) on SurreyLearn discussion boards
  

Indicated Lecture Hours (which may also include seminars, tutorials, workshops and other contact time) are approximate and may include in-class tests where one or more of these are an assessment on the module. In-class tests are scheduled/organised separately to taught content and will be published on to student personal timetables, where they apply to taken modules, as soon as they are finalised by central administration. This will usually be after the initial publication of the teaching timetable for the relevant semester.

Reading list

https://readinglists.surrey.ac.uk
Upon accessing the reading list, please search for the module using the module code: PHYM061

Programmes this module appears in

Please note that the information detailed within this record is accurate at the time of publishing and may be subject to change. This record contains information for the most up to date version of the programme / module for the 2020/1 academic year.