| Budget Amount *help |
¥50,050,000 (Direct Cost: ¥38,500,000、Indirect Cost: ¥11,550,000)
Fiscal Year 2013: ¥7,930,000 (Direct Cost: ¥6,100,000、Indirect Cost: ¥1,830,000)
Fiscal Year 2012: ¥7,930,000 (Direct Cost: ¥6,100,000、Indirect Cost: ¥1,830,000)
Fiscal Year 2011: ¥34,190,000 (Direct Cost: ¥26,300,000、Indirect Cost: ¥7,890,000)
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| Research Abstract |
We have fabricated a near field excitation laser terahertz emission microscope (LTEM) combined with an atomic force microscope (AFM) in order to evaluate optoelectronic devices with fine structures. In the combined system we introduced a special AFM cantilever with a narrow aperture of about 500 nm into an optical path of excitation femtosecond pulsed laser to generate near-field light to excite terahertz wave pulses. Using the fabricated system, we have succeeded in the generation of terahertz wave pulse from a bowtie antenna fabricated on a low temperature grown GaAs (LT-GaAs) by near field light excitation, and also succeeded in the simultaneous observation of LTEM and AFM images.
On the other hand, we have also succeeded in the high-sensitive detection of terahertz wave pulse by optimizing the antenna structure of photoconductive terahertz detector fabricated on LT-GaAs.
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