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Nano photonics is the study of behavior of light on the nanometer scale and it is also called as Nano-optics. It is the interaction of nanometer-scale objects with light. It is one of the branch of nanotechnology, optics and optical engineering,. It involves metallic components, which has the capactity to transport and focus light via surface plasmon polaritons. The term nano-optics is just like the term optics and it is usually concerned with ultraviolet, visible, & near-infrared light. The free-space wavelength is around 300-1200 nanometer.
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Scope and Importance
The normal optical components like lenses and microscopes, don’t have the capacity to focus light normally to nanometer that is sub wavelength scale because of the diffraction limit. In spite of that it is possible to squeeze light into the nanometer scale using other techniques like localized surface plasmons around nano scale metal objects, surface plasmons, & the nano scale apertures & nano scale sharp tips that is used in near field scanning optical microscopy and photo assisted scanning tunneling microscopy.
Nanophotonics researchers follow a very wide variety of goals, in fields ranging from biochemistry to electrical engineering.Optoelectronics and microelectronics.
The term Nanophotonics has been used in various types of process like , power electronics , laser doping , laser ablation , optical systems , laser engravers medicine industries , optoelectronics devices , photonics , biopotonics , nanophotonics and etc.
Photo detectors: If light can is squeezed in a small volume it can be absorbed & detected by small detector. Small detectors have a many desirable properties including high speed , low noise, low voltage and power.
Lasers: Lasers have many properties for optical communication and it includes low threshold current which helps in power efficiency & fast modulation which means it has more capacity to transmit data. Small lasers require sub wave length optical cavities. One example is spasers.
Photolithography: Integrated circuits are made photolithography that is exposure to light. In order to make small transistors light needs to be focused on extremely sharp images. Using different techniques such as phase-shifting photomasks and immersion lithography it has been possible to make images very much finer than the wavelength.
Heat-assisted magnetic recording: This is generally a nano photonic approach to increase the data that a magnetic disk drive can store. It requires laser to heat a tiny sub wave length area of magnetic material before writing the data. The magnetic write head will have metal optical components to concentrate the light at right location.
Nanotechnology, optoelectronics, and photonics are expected to make a significant impact on the way we see the world today. Nanophotonics is the combination of these three technologies. The nanophotonics components market is expected to reach over $3.6 billion by 2014, while the nanophotonics device market is expected to grow at a CAGR of more than 100% from its current market size of $1.8 billion to $58 billion in 2017.
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This page was last updated on October 22, 2021