Nonlinear Optics Group - Terahertz Parametric Generation

The THz spectral region, lying between the microwave and the far infrared, is currently attracting widespread interest in relation to potential applications that span many areas of pure and applied science and technology. The development of practical sources of THz radiation, the lack of which has previously inhibited progress, is crucial to the realisation of these applications, including the detection and characterisation of concealed drugs.

The group has recently adapted it's intracavity pumping research, with optical parametric oscillators, to develop a compact THz parametric source. Initial results are very promising, some of which are highlighted on the pages linked in the menu to the right and at the top of this page.

Research into THz parametric sources now forms the main focus of the group's work. To this end we currently running three research programmes, these cover both source development, characterisation and applications-based research, in particular the spectroscopy and detection of illicit drugs.

Publication Records
OPTICS EXPRESS	2010
Intracavity parametric generation of nanosecond terahertz radiation using quasi-phase-matching Walsh DA, Browne PG, Dunn MH, Rae CF,
Applied Physics Letters	2008
Line-narrowed, compact, and coherent source of widely tunable terahertz radiation Stothard DJM, Edwards TJ, Walsh D, Thomson CL, Rae CF, Dunn MH, Browne PG,
Optics Express	2006
Compact source of continuously and widely-tunable terahertz radiation Edwards TJ, Walsh D, Spurr MB, Rae CF, Dunn MH, Browne PG,
Proceedings of SPIE	2006
Compact and coherent source of widely tunable THz radiation Edwards TJ, Walsh D, Spurr MB, Browne P, Rae CF, Dunn MH,


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