Available student project - Ultra-compact nanowire lasers for application in nanophotonics

Research fields

  • Nanoscience and Nanotechnology
  • Photonics, Lasers and Nonlinear Optics
Nanowire lasers and optical modes

Project details

As new devices and technologies move towards miniaturisation, nanoscale lasers are becoming more and more important. Miniaturisation allows more devices of differing functionalities to be integrated together to perform more tasks simultaneously and also reducing power consumption. Nanowire lasers can be used for integrated on-chip photonic devices for a myriad of applications such as optical signal processing for mobile/data communications and single photon sources for secure communication. They are also excellent candidates for ultra-sensitive optical sensors: for example in-vitro/in-vivo medical diagnostic at the single cell level, sensing of biological/chemical toxins at the femto-molar volume, gas sensing on the part per trillion level, and simultaneous sensing of multiple bio-molecules.

Although optically pumped nanowires lasers have been reported, little progress has since been made toward electrically injected nanowire lasers. Electrically operated nanowire lasers will provide the translational step to bring research outcomes from laboratories to practical applications in our daily lives.

The aims of project are to:

  • investigate and optimise the doping level and configuration in axial and core-shell nanowires
  • investigate the type of structures and geometries most suitable for electrical contacts
  • compare the performance of horizontally-lying and vertically standing nanowire lasers
  • develop advanced designs and concepts such as mode selection and coupling to photonic crystal cavities.

Required background

Physics, Material Science, Engineering

Project suitability

This research project can be tailored to suit students of the following type(s)
  • 3rd year special project
  • PhB (1st year)
  • PhB (2nd or 3rd year)
  • Honours project
  • Phd or Masters
  • Vacation scholar

Contact supervisor

Jagadish AC, Chennupati profile

Other supervisor(s)

Tan, Hoe profile

Updated:  4 September 2019/ Responsible Officer:  Director, RSPhys/ Page Contact:  Physics Webmaster