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Associate Professor, Faculty of Electrical Engineering and Electronics, Kyoto Institute of Technology *Profile is at the time of the award.
2025Inamori Research GrantsScience & Engineering
Recently, rapid advancements have been made in photon-electron conversion through the precise control of light in photonic crystals. Extending this progress from opto-electronics to opto-spintronics may pave the way to reduce energy consumption in information processing, which becomes a global problem.
Nano-cavity for circularly polarized light based on a three-dimensional helical photonic crystal was fabricated elaborately by semiconductor nano-fabrication technique. Low temperature photoluminescence measurements were performed for the cavity with an external magnetic field. The obtained spectra show the increased peak intensity, the blue shift of the center wavelength, and the increased peak width in a magnetic field. This result indicates that Zeeman effect widens the emission peak and that Purcell effect increases the peak intensity at the cavity mode of circularly polarized light corresponding to the spins in the short wavelength region.
Science & Engineering
