An international research team wrote in the journal Science published on the 28th that indium tin oxide (ITO) can achieve optical nonlinearity more than hundreds of times higher than other materials, and it is expected to play a major role in many photonics applications in the future.
Compared with electrons, photon transmission information has the advantages of strong parallel processing capability, fast calculation speed, and low energy consumption. In order to make better use of photons, scientists need to control their "every move" as they pass through the material. One way to control is to adjust the refractive index of the material so that light passes through the material faster or slower. Some materials can change their refractive index based on the difference in light intensity (low energy source or high energy laser) - optical nonlinearity. In the field of photonics, materials with higher optical nonlinearities are more attractive to scientists.
A team led by Robert Boyd, a professor at the University of Rochester in the United States, found that indium tin oxide, commonly used in touch screens and aircraft windows, yields particularly high optical nonlinearities. Under certain conditions, ITO samples can achieve optical nonlinearities that are hundreds of times greater than other materials.
In addition, some materials can quickly return to their original refractive index after photons pass, while other materials may remain in new state. If a material can make this adjustment faster, it will be very helpful for most applications. The stronger the ability of a material to change its refractive index, the greater its range of photon velocities, allowing scientists to control the function of photons to a greater extent, which is widely used in many fields such as microscopy and data processing.
In the latest study, ITO restored its original refractive index in 360 femtoseconds (1 femtosecond is one-billionth of a second).
The research collaborator, Isrell De Leon of the University of Technology, Monterey, Mexico, explains that this particular condition is related to light with a wavelength of about 1.2 microns, which is between visible light and light with a wavelength of 1.5 microns. It is of great significance to photonic communication.
Sodick Essner, a photonics expert at the University of California, San Diego, said the latest research will undoubtedly have a major impact on photonics, especially in the field of silicon nanophotonics.
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Compared with electrons, photon transmission information has the advantages of strong parallel processing capability, fast calculation speed, and low energy consumption. In order to make better use of photons, scientists need to control their "every move" as they pass through the material. One way to control is to adjust the refractive index of the material so that light passes through the material faster or slower. Some materials can change their refractive index based on the difference in light intensity (low energy source or high energy laser) - optical nonlinearity. In the field of photonics, materials with higher optical nonlinearities are more attractive to scientists.
A team led by Robert Boyd, a professor at the University of Rochester in the United States, found that indium tin oxide, commonly used in touch screens and aircraft windows, yields particularly high optical nonlinearities. Under certain conditions, ITO samples can achieve optical nonlinearities that are hundreds of times greater than other materials.
In addition, some materials can quickly return to their original refractive index after photons pass, while other materials may remain in new state. If a material can make this adjustment faster, it will be very helpful for most applications. The stronger the ability of a material to change its refractive index, the greater its range of photon velocities, allowing scientists to control the function of photons to a greater extent, which is widely used in many fields such as microscopy and data processing.
In the latest study, ITO restored its original refractive index in 360 femtoseconds (1 femtosecond is one-billionth of a second).
The research collaborator, Isrell De Leon of the University of Technology, Monterey, Mexico, explains that this particular condition is related to light with a wavelength of about 1.2 microns, which is between visible light and light with a wavelength of 1.5 microns. It is of great significance to photonic communication.
Sodick Essner, a photonics expert at the University of California, San Diego, said the latest research will undoubtedly have a major impact on photonics, especially in the field of silicon nanophotonics.
LED Business Network led to focus on e-commerce platform to promote led enterprises + Internet, the official website http://
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