Photon Factory

Optimisation of Static Beam Shape for Ultrafast Ablation

Supervisor

Claude Aguergaray
Cather Simpson

Discipline

Photon Factory

Project code: SCI158

We are currently seeking Summer scholarship Student for a study on an exciting project involving dual wavelength laser micromachining, supervised by Prof. Cather Simpson. This will study the effects of novel beam shapes in material ablation rate. This aims to improve the processing of femtosecond laser ablation – an exciting and highly accurate technique.
Using these methods the project will involve using a spatial light modulator to shape the beam, studying the effectiveness of different shapes and their versatility for different applications
 

Pulse shaping for laser improved micromachining

Supervisor

Claude Aguergaray
Cather Simpson

Discipline

Photon Factory

Project code: SCI159

We are currently seeking Summer scholarship Student for study on temporal and spectral pulse shaping to broaden our expertise in laser micro-machining. Typical surface processing with light is done with a train of single pulses. We propose to investigate in this project dual-pulse light-matter interaction. This project will be supervised by Prof. Cather Simpson.
This project sits in the middle of multiple domains. It involves understanding fibre lasers, pulse shaping and laser micro-machining. The aim of the project is to explore the light-matter interaction using a range of pulse configuration (dual-pulse separation, pulse shape, pulse chirp, etc.) on various materials.
 

Machining parameter study of new ultrafast lasers

Supervisor

Claude Aguergaray
Cather Simpson

Discipline

Photon Factory

Project code: SCI160

We are currently seeking Summer scholarship Student for a study of machining using new ultrafast lasers, supervised by Prof. Cather Simpson. The aim of this will be to undertake parameter studies machining materials that have been characterised by our existing ultrafast laser. This is to understand how to take advantage of the new parameters and features available to us.
This project combines both machining knowledge and understanding of the light matter interaction across a range of materials and parameters – such as repetition rate and pulse width.
 

Combining Laser Additive and Subtractive Manufacturing

Supervisor

Claude Aguergaray
Cather Simpson

Discipline

Photon Factory

Project code: SCI161

We are currently seeking Summer scholarship Student for a study of machining using new ultrafast lasers, supervised by Prof. Cather Simpson. This project will begin work on a project combining both additive and subtractive laser manufacturing. This aims to allow novel shapes on a microscopic scale that could not previously be produced through either additive or subtractive manufacturing alone, including shapes that beat the diffraction limit.

Precision Beer Brewing

Supervisor

Alex Risos
Cather Simpson

Discipline

Photon Factory

Project code: SCI162

Skills: Spectroscopy, Laser, Optics, Vibrational chemistry

Description: Quality assessment in breweries has top priority ensuring consistent quality to the customer. Tiny changes in the chemical composition make a pilsner to a lager. However, our (human) taste is so sensitive to distinguish any kind of difference in the beer’s composition. There are several analytical techniques but they are not always applicable. Another way is to use non-invasive spectroscopy as an electronic nose, detecting chemical variations in beer. This project will investigate several beverages before and after treatment verifying the proof of concept detecting chemical changes in beverages using laser spectroscopy. The student will learn laser technology, optics and vibrational nonlinear laser spectroscopy on basis of guided self-study.
 

Modelling of supercontinuum generation

Supervisor

Alex Risos
Cather Simpson

Discipline

Photon Factory

Project code: SCI163

Theoretical physics, optics, laser technology

Supercontinuum (SC) is the term for a large number of a continuum of light frequencies. This can be triggered in standard χ3 crystals using femtosecond laser pulses. This process is well applied but lacks of a proper understanding. Therefore, this project will use analytical expressions to model the SC generation using different pulse shapes in the spatial and temporal domain. The student will refine theory around SC depending on those two parameters.
 

Using spectroscopy to analyse the pigment in Varroa mites

Supervisor

Michel Nieuwoudt
Cather Simpson

Discipline

Photon Factory

Project code: SCI164

We are currently seeking a Summer scholarship student to work on a project in conjunction with the Photon Factory. The project will utilize a number of spectroscopic techniques to characterize the red/brown pigment in Varroa mites, which are parasitic mites that attack honey bees. The aim of the characterization ultimately is to develop optical methods to target this compound. Spectroscopic techniques that can be used will be FTIR, Raman, UV-Vis, Fluorescence, NMR and Mass spectroscopies

Adding another dimension to ultrafast spectroscopy

Supervisor

Ben Mallet
Nina Novikova
Cather Simpson

Discipline

Photon Factory

Project code: SCI165

Adding another dimension to ultrafast spectroscopy”

We are developing a new, powerful extension to ultra-fast time-resolved spectroscopy in the Photon Factory. Physical and chemical properties of photoactive compounds are often determined by the ultrafast dynamics that occur immediately after irradiation with light. The project aims to modify our current system to measure both the ultra-fast absorption and refractive index using ellipsometric techniques. With help from the supervisors, the student will take measurements of Si and graphene-oxide on the new system and model the resulting data. The project will be a proof-of-principle for this new technique and will give fresh insights into light-matter interactions at ultrashort time scales.
 

Low Temperature Physics of Main Group Polymeric materials

Supervisor

Ben Mallett
Cather Simpson
Erin Leitao

Discipline

Photon Factory

Project code: SCI166

This project involves investigating, for the first time, the electronic, optical, and magnetic properties of a novel series of polymers at cryogenic temperatures. The student will learn synthetic techniques to fabricate films, and a wide range of materials characterization/spectroscopic tools (e.g. SEM, TEM, cryostat, XPS, etc.).

Machining parameter study of new ultrafast lasers

Supervisor

Claude Aguergaray
Cather Simpson

Discipline

Photon Factory

Project code: SCI167

We are currently seeking Summer scholarship Student for a study of machining using our new fibre-laser system capable of outputting 2 pulses with varying temporal separation, supervised by Dr. Claude Aguergaray.

The aim of this will be to undertake parameter studies machining materials to improve the ablation efficiency.

We will look at how to take advantage of this new parameter space. The project combines both machining knowledge and understanding of the light-matter interaction across a range of materials and parameters.
It involves an understanding of fibre-laser technology and ultra-short pulse generation.