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DDMEBT-polymer composite: a new nonlinear material


In this project, we want to measure the DDMEBT-polymer nonlinear optical properties by using the z-scan technique.


Associate Professor Stefano Palomba.

Research location

School of Physics

Program type



An empirical rule, called Miller’s rule, suggests that the nonlinear optical properties of any material increase with its own index of refraction. However, for certain efficient waveguide-based devices, this is not ideal; a material with high nonlinearities and low refractive index, the opposite of Miller’s rule, is sought. A few years ago a new organic film was created, exhibiting exactly these characteristics, called DDMEBT, which is very difficult to manufacture. One of our collaborators in Tokyo has synthesized the polymeric version of this material, way easier to and handle. However, our z-scan currently is not performing as expected. We think that it requires the installation of a reference arm which will reduce enormously the background generated by the laser fluctuations. Hence, we need to install and test the reference arm and demonstrate the expected performance. At this point, we would be able to measure the new material nonlinear optical properties.

Additional information

HDR Inherent Requirements  

In addition to the academic requirements set out in the Science Postgraduate Handbook, you may be required to satisfy a number of inherent requirements to complete this degree. Example of inherent requirement may include:  

  • Confidential disclosure and registration of a disability that may hinder your performance in your degree;
  • Confidential disclosure of a pre-existing or current medical condition that may hinder your performance in your degree (e.g. heart disease, pace-maker, significant immune suppression, diabetes, vertigo, etc.);
  • Ability to perform independently and/or with minimal supervision;  
  • Ability to undertake certain physical tasks (e.g. heavy lifting);  
  • Ability to undertake observatory, sensory and communication tasks;  
  • Ability to spend time at remote sites (e.g. One Tree Island, Narrabri and Camden);  
  • Ability to work in confined spaces or at heights;  
  • Ability to operate heavy machinery (e.g. farming equipment);  
  • Hold or acquire an Australian driver’s licence;  
  • Hold a current scuba diving license;  
  • Hold a current Working with Children Check;  
  • Meet initial and ongoing immunisation requirements (e.g. Q-Fever, Vaccinia virus, Hepatitis, etc.)   

You must consult with your nominated supervisor regarding any identified inherent requirements before completing your application.

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Opportunity ID

The opportunity ID for this research opportunity is 2696

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