Nonlinear optics and frequency combs in microresonators

Microresonators are tiny devices that can confine light in an extraordinarily small volume, enabling strong interactions between light and matter. In particular, they can be used to convert a single monochromatic laser beam into dozens of equally spaced frequency components through the so-called Kerr optical nonlinearity. Such microresonator "optical frequency combs" have a number of prospective applications, and their study represents one of the hottest topics in today’s (nonlinear) photonics.

This project will leverage a synergetic combination of experiment and modelling to (i) better understand the dynamics of existing Kerr frequency comb technologies, and (ii) develop and explore entirely new kinds of frequency comb architectures. Key research questions include: How can we explain the precise characteristics and formation dynamics of the different experimentally observed Kerr frequency comb states? Can we leverage different optical nonlinearities to realise microresonator frequency combs with advantageous characteristics? Can we realise novel types of frequency comb sources by using macroscopic fiber-based resonators?

The overall project involves both experimental and theoretical components, but the student’s contributions can be tailored according to individual preference. Experimental work may include for example the fabrication of microresonators, and the use of optical and electronic diagnostics equipment to characterise the linear resonator properties as well as the generated frequency combs. Theoretical work may include numerical integration of partial differential equations, bifurcation analyses of nonlinear dynamical systems, and the study of (dissipative) solitons in (nearly) integrable systems.

We encourage strongly motivated candidates interested in either experiment or theory (or both) to apply. The ideal candidate will have excellent command of written and spoken English, and some prior background in one (or more) of the following fields: laser physics, nonlinear optics, nonlinear dynamics, applied mathematics.

The project is based in the nonlinear photonics group at the Department of Physics of the University of Auckland. Our group consists of three senior academics and several post-docs/students, and we conduct world-leading experimental and theoretical research on nonlinear optics and laser physics. We offer excellent research infrastructure and a stimulating scientific environment at the heart of Auckland, one of the most liveable cities in the world. More information on our research can be found from www.miroerkintalo.com.

All applications and inquiries should be sent to Dr Miro Erkintalo at [Email Address Removed]. Please include a curriculum vitae, a recent transcript of records, and the names and contact details of two references.