Moscow, St. Petersburg and Yerevan, while studying the optical properties of gallium phosphide nanowires, they developed complex optical elements designed for integrated circuits of computers of the future. Research results published Small in the scientific journal.
The work was carried out by employees of the laboratory of functional nanomaterials of the Center for Photonics and Two-Dimensional Materials of the Moscow Institute of Physics and Technology, as well as St. It included colleagues from the St. Petersburg Academic University. Zh.I. Alferov, Higher School of Economics (HSE), ITMO University, St. Petersburg State University (SPbSU), Peter the Great St. Petersburg Polytechnic University (SPbPU) and Yerevan State University.
In the first part of the experiment, the effect of waveguide diameter on light transmission properties was investigated. A laser beam focused on one end of the nanocrystal and looked through an optical microscope to see if light was emitted from the other end. The minimum crystal diameter through which light passed through the waveguide depended on the laser wavelength. The longer the wavelength, the wider the waveguide should be.
The scientists then studied the transmittance of the waveguide in detail. To do this, broadband laser radiation (in the visible to near-infrared range) was delivered to one end of the nanowire and the spectrum was measured at the other end. The output spectrum depended on its diameter. Some wires showed peaks in their transmission spectrum. This means that gallium phosphide waveguides exhibit resonant properties – they can be used to amplify light of a certain frequency, filter out signals or generate laser radiation at the nanoscale.
In the last part of the study, the scientists examined the separator. To do this, the experts bent two nanowires and connected them together in the shape of the letter “X”. The physicists received a light signal from both nanocrystalline ends by illuminating one end. By connecting several such nanowires, the scientists showed that even with strong bending, the material does not collapse, retains its shape and transmits light.
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