Nonlinear Optics
Nonlinear optics is integral part of our groups research portfolio because it is
essential to ultrafast light-matter interactions, providing new tools such as
frequency conversion and novel mechanisms to control light through its interaction
with matter and vice versa. We have explored the nonlinear optical coefficients
in industry critical media, such as silicon, and generation of terahertz radiation
through optical rectification in highly nonlinear crystals, such as ZnGeP
2 and other chalcopyrite structures, in collaboration with BAE Systems.
We have also examined novel materials for higher-order nonlinear effects. Finally,
we have used the terahertz radiation to explore materials' transport properties
of solids.
- A. D. Bristow, N. Rotenberg, H. M. van Driel, Two-photon absorption and optical Kerr coefficients of silicon for 850 – 2200 nm, Applied Physics Letters 90, 191104 (2007).
- J. D. Rowley, J. K. Pierce, A. T. Brant, L. E. Halliburton, N. C. Giles, P. G. Schunemann, A. D. Bristow, Broadbandterahertz pulse emission from ZnGeP 2 , Optics Letters 37, 788(2012).
- S. Melzer, C. Ruppert, A. D. Bristow, M. Betz, Stimulated two-photon emission in bulk CdSe, Optics Letters 43, 5066 (2018).
- H. P. Piyathilaka, R. Sooriyagoda, V. Dewasurendra, M. B. Johnson, K. T. Zawilski, P. G. Schunemann, A. D. Bristow, Terahertz generation by optical rectification in chalcopyrite crystals ZnGeP 2, CdGeP 2 and CdSiP 2 , Optics Express 27, 16958 (2019).
- R. Sooriyagoda, H. P. Piyathilaka, K. T. Zawilski, P. G. Schunemann, A. D. Bristow Carrier transport and electron-lattice interactions of nonlinear optical crystals CdGeP 2, ZnGeP 2 and CdSiP 2 , Journal of the Optical Society of America B 38, 769 (2021).
- Y. Xiang, C. Yan, T. D. Stanescu, Y. Ma, R. Sooriyagoda, F. Shi, A. D. Bristow, L. Li, C. Cen, Giant third-harmonicoptical generation from topological insulator heterostructures, Nano Letters 21, 8872 (2021).