A F Harvey (promotional image)

9 March 2017 | IET London: Savoy Place

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Novel resonant dielectric nanophotonics for novel technologies

 

Photonics, the science of light, is one of the most rapidly developing scientific fields resulting in a number of modern technologies, which has already become a part of our everyday life. LED lighting, different types of displays and touch screens are all products of rapid development of photonic technologies during recent years.

Looking forward, it is expected that the number of photonic-based products will continue to rapidly grow, occupying new market niches. Photonic-based computer chips are expected to make new computers many fold faster than existing ones, holography-based devices are expected to fully transform reality around us, wearable photonic components may become a part of our everyday life.

Most of the new photonic technologies require compact and high-resolution photonic devices, which can manipulate light at sub-wavelength/nanoscale dimensions.

At this small scale, conventional optical components, such as lenses, are no longer functional and completely new approaches and components, such as nanoantennas, should be developed. This stimulates strong research efforts in the field of nanophotonics, which deals with light properties and manipulation at nanoscale.

So far, most of these efforts are still in scientific domain, generating a number of high-impact publications rather than a number of high-impact technologies. The main reasons are high losses of nanophotonic components typically based on plasmonic metals as well as CMOS incompatibility and costs of the required nanofabrication.

However, the time of nanophotonic technologies is rapidly approaching. Cheaper nanofabrication procedures and much lower loss materials, e.g. high-index dielectrics instead of plasmonic metals, should make many of these technologies become real in the upcoming 5-10 or even 3-5 years.

In his lecture, Dr. Kuznetsov will describe a new concept of low-loss dielectric nanoantennas and talk about his aims of implementing this concept into real-life devicesUsing a wwitchable nanoantenna approach.

If successful, these results may open doors for nanophotonics to real-life applications, which may generate an explosive growth of novel nanophotonic-based products and associated markets.

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