Optical generation terahertz radiation from ZnSe surface nanoparticles

Wu, Xiao Jun; Chen, X.S.; Zhao, Yang; He, Shan; Zhao, Faqiong; Wang, G.

doi:10.1109/icimw.2007.4516583

Cited by 1 publication

(2 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It has been demonstrated by a group in Glasgow, UK , that appropriate nano-engineered surfaces can enhance THz radiation through surface plasmons (SPs) under a femtosecond laser simulation 66 . Initially, the emission of terahertz signal due to SPs has been confirmed from metal grating 66 , nanoparticle (ZnSe) surface 67 and nanograin surface (ZnSe) 68 , while the studies have been expanded to different types of metal surfaces (mainly gold), such as nanoparticles, nanoparticle rings and pyramid-shaped particles 69 . When light interacts with metallic nanosurfaces, non-linear optical phenomena are enhanced due to the strong interactions and the high field strengths that are produced 66 .…”

Section: Nanotechnology For Thz Imagingmentioning

confidence: 99%

“…Gao and colleagues stated that this phenomenon is a consequence of the electrons' acceleration, which is a result of the surface plasmon excitation and believed that the mechanism is related to the multiphoton photoelectric effect 69 . In the case of surface nanoparticles, the mechanism of THz emission can be described in terms of dipole orientation 67 .…”

Section: Nanotechnology For Thz Imagingmentioning

confidence: 99%

See 1 more Smart Citation

Nanotechnology-supported THz medical imaging

Stylianou

Talias

2013

F1000Res

View full text Add to dashboard Cite

Over the last few decades, the achievements and progress in the field of medical imaging have dramatically enhanced the early detection and treatment of many pathological conditions. The development of new imaging modalities, especially non-ionising ones, which will improve prognosis, is of crucial importance. A number of novel imaging modalities have been developed but they are still in the initial stages of development and serious drawbacks obstruct them from offering their benefits to the medical field. In the 21 st century, it is believed that nanotechnology will highly influence our everyday life and dramatically change the world of medicine, including medical imaging. Here we discuss how nanotechnology, which is still in its infancy, can improve Terahertz (THz) imaging, an emerging imaging modality, and how it may find its way into real clinical applications. THz imaging is characterised by the use of non-ionising radiation and although it has the potential to be used in many biomedical fields, it remains in the field of basic research. An extensive review of the recent available literature shows how the current state of this emerging imaging modality can be transformed by nanotechnology. Innovative scientific concepts that use nanotechnology-based techniques to overcome some of the limitations of the use of THz imaging are discussed. We review a number of drawbacks, such as a low contrast mechanism, poor source performance and bulky THz systems, which characterise present THz medical imaging and suggest how they can be overcome through nanotechnology. Better resolution and higher detection sensitivity can also be achieved using nanotechnology techniques.

show abstract