| Budget Amount *help |
¥213,460,000 (Direct Cost: ¥164,200,000、Indirect Cost: ¥49,260,000)
Fiscal Year 2014: ¥28,730,000 (Direct Cost: ¥22,100,000、Indirect Cost: ¥6,630,000)
Fiscal Year 2013: ¥28,730,000 (Direct Cost: ¥22,100,000、Indirect Cost: ¥6,630,000)
Fiscal Year 2012: ¥59,930,000 (Direct Cost: ¥46,100,000、Indirect Cost: ¥13,830,000)
Fiscal Year 2011: ¥47,970,000 (Direct Cost: ¥36,900,000、Indirect Cost: ¥11,070,000)
Fiscal Year 2010: ¥48,100,000 (Direct Cost: ¥37,000,000、Indirect Cost: ¥11,100,000)
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| Outline of Final Research Achievements |
Manipulation of magnetization with femotosecond laser pulses has been studied in order to find ways to break the two-picosecond (ps) limit shown by magnetic pulses. The photo-excited precession of magnetization (PEPM) in ferromagnetic semiconductors is found to be attributed to the change in magnetic anisotropy due to photo-ionization of Mn ions, with which non-linear control of the precession amplitude has also been demonstrated by a pair of sub-ps-separated laser pulses. Furthermore, PEPM with MW/cm2 pulse power has been found possible in the Co-Pd multilayers, which indicates the discovery of candidate materials for spin-photonic devices. The spatial de-multiplexing of polarization modulated signals has been demonstrated using the optical fibers attached with magnetic thin films, through which fundamentals of spin-photonic devices are experimented. Helicity switching of circular polarized light at 100 kHz has been demonstrated at room temperature by dual-injection spin-LED.
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