Researchers at the University of California have developed a more efficient way to transform light
These conditions arise when superficialatoms have an insufficient number of other atoms with which they can bind, which leads to a violation of the atomic structure. These incomplete chemical bonds create barriers to electrical charges passing through semiconductor devices and affect their performance.
“There have been many attempts to suppressthe effect of surface states in semiconductor devices, not realizing that they have unique electrochemical properties that can provide unprecedented functionality of devices, ”the scientists noted.
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"Thanks to the new structure, wavelength conversion occurs easily and without an additional source of energy when the incoming light crosses the field," the scientists note.
Researchers have successfully and effectively transformeda beam of light with a wavelength of 1550 nanometers in the terahertz part of the spectrum with a wavelength from 100 micrometers to 1 millimeter. The team demonstrated the efficiency of wavelength conversion by incorporating new technology into an endoscopic probe that can be used for detailed imaging and in-vivo spectroscopy using terahertz waves.
Without this method of converting wavelengths forobtaining the same terahertz waves would require 100 times more optical power, which cannot be provided by thin optical fibers used in an endoscopic probe.
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