Personal profile
Biography
I am originally from Cork and attended UCC as an undergraduate student, graduating with a Joint Honours Degree in Physics and Mathematics in 1998. I subsequently completed a Masters in Physics under the supervision of Niall Ó Murchadha in 1999. Following this I move to Cambridge University, taking Part III (of the Mathematical Tripos), graduating in 2000. I then returned to Cork and completed my PhD in Physics in 2003 - again under the supervision of Niall Ó Murchadha – in which I considered the implementation of conformal invariance in general relativity and the implications for the initial value problem. I then spent two years as a postdoctoral fellow in the University of British Columbia in Vancouver working under the supervision of Bill Unruh. In 2006 I returned to Cork and changed my field of research to photonics and the dynamics of semiconductor lasers. I worked in Tyndall National Institute and Cork Institute of Technology until moving to my current position in the School of Physics in 2015. I also remain an Academic Member of Tyndall National Institute with my research group being co-located between Kane and Tyndall. I am an active researcher in IPIC, led by Tyndall National Institute. My research focuses on non-linear dynamics, and primarily the non-linear dynamics of semiconductor lasers. This includes analyses of coupled lasers in many different configurations with a view to advances in both fundamental physics and applied physics, including analyses of neuromorphic dynamics of laser configurations, optical combs for communications and swept source lasers for Optical Coherence Tomography.
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Collaborations and top research areas from the last five years
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Enhancement of frequency comb bandwidth in gain-switched integrated semiconductor lasers via mutual coupling
O'Sullivan, D., McCarthy, J., Peters, F. & Kelleher, B., 2025, 2025 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference, CLEO/Europe-EQEC 2025. Institute of Electrical and Electronics Engineers Inc., (2025 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference, CLEO/Europe-EQEC 2025).Research output: Chapter in Book/Report/Conference proceedings › Conference proceeding › peer-review
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Multimode dynamics of a monolithically integrated, tunable, bidirectional, gain switched optical comb source
Liston, O., McCarthy, J., O’Sullivan, D., Dernaika, M., Peters, F. & Kelleher, B., 27 Jan 2025, In: Optics Express. 33, 2, p. 2449-2460 12 p.Research output: Contribution to journal › Article › peer-review
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Optical frequency comb bandwidth enhancement of a monolithically integrated gain switched device
O’Sullivan, D., McCarthy, J., Russell, E., Jia, Z., Peters, F. H. & Kelleher, B., Sep 2025, In: Optics Express. 33, 19, p. 39991-39998 8 p.Research output: Contribution to journal › Article › peer-review
Open Access -
Chaotic optical frequency combs via relaxation oscillation excitation in on-chip bidirectionally coupled lasers
O’Sullivan, D., Liston, O., McCarthy, J., Peters, F. H. & Kelleher, B., 2024, Semiconductor Lasers and Laser Dynamics XI. Sciamanna, M., Lin, F.-Y. & Mork, J. (eds.). SPIE, 1300205. (Proceedings of SPIE - The International Society for Optical Engineering; vol. 13002).Research output: Chapter in Book/Report/Conference proceedings › Conference proceeding › peer-review
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Optical Injection Locking of Longitudinal Modes in a Discrete Mode Laser: Application in Gain-Switched Optical Frequency Combs
Quirce, A., Kelleher, B. & Valle, A., 15 May 2024, In: Journal of Lightwave Technology. 42, 10, p. 3799-3806 8 p.Research output: Contribution to journal › Article › peer-review
Open Access
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Intel- 6 Reasons Investors Remain Bearish (and 3 Reasons Why Bullish)
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