Distinguished Prof David McClelland

Department Centre for Gravitational Astrophysics
Office phone (02) 612 59888
Email
Office Physics 1 77
Webpage https://cga.anu.edu.au

Higher-order spatial mode optical cavity analysis for thermal noise measurements

Gravitational wave detectors have reached the thermodynamic limit of optical coating performance and require novel coating materials and noise mitigation techniques for further sensitivity improvements. This project investigates the behaviour of higher order spatial laser modes in optical resonators for measuring coating thermal noise directly.

Dr Johannes Eichholz, Dr Bram Slagmolen, Distinguished Prof David McClelland

Vibration control for optical interferometry

Develop an active vibraiton isolation platform to provide a quiet, small displacement environment for high precision inteferometry.

Dr Bram Slagmolen, Distinguished Prof David McClelland

Optimising a Neutron Star Extreme Matter Observatory

Following a practical introduction to optical interferometry for gravitational wave detectors and simulation tools, this project will model the optical configuration to optimize detector performance against a number of possible predictions of the neutron star equation of state.

Dr Bram Slagmolen, Dr Lilli (Ling) Sun, Dr Vaishali Adya, Distinguished Prof David McClelland

Low-noise offset-phase locking and heterodyne interferometry with 2µm-band lasers

Gravitational wave detectors have reached the thermodynamic limit of optical coating performance and require novel coating materials and noise mitigation techniques for further sensitivity improvements. This project is to implement a phase tracking system for the optical beat between two 2µm-band lasers for coating thermal noise measurements.

Dr Johannes Eichholz, Dr Bram Slagmolen, Distinguished Prof David McClelland

High-bandwidth stabilisation of a 2µm-band laser

Gravitational wave detectors have reached the thermodynamic limit of optical coating performance and require novel coating materials and coating noise suppression techniques for further sensitivity improvements. This project is to design a high-bandwidth feedback control system to stabilise the intensity and frequency of a 2µm-band laser for investigations of thermal noise in experimental mirror coatings.

Dr Johannes Eichholz, Dr Bram Slagmolen, Distinguished Prof David McClelland

Dual torsion pendulum for quantum noise limited sensing

Construct a small dual tosion pendulum which have their centre of mass co-incide and their rotational axis colinear. Inital diagnostics will be done using shadow sensors.

Dr Bram Slagmolen, Distinguished Prof David McClelland

Quantum squeezed states for interferometric gravitational-wave detectors

Using non-classical light states on laser interferometric gravitational-wave detectors, to further enhance the best length measurement devices in the world.

Distinguished Prof David McClelland, Professor Daniel Shaddock, Dr Bram Slagmolen

Measurement of optical and mechanical losses of mirror coatings

Gravitational wave detectors have reached the thermodynamic limit of optical coating performance and require novel coating materials and noise mitigation techniques for further sensitivity improvements. This project is to construct an experiment that measures oscillation amplitude decays of mechanical systems for determining key properties of optical coatings.

Dr Johannes Eichholz, Dr Bram Slagmolen, Distinguished Prof David McClelland

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