S Hayashi   K Maki   C Otani   K Kawase   
TOPICAL PROBLEMS OF NONLINEAR WAVE PHYSICS 5975 2006年 [査読有り]
We introduce several types of terahertz- (THz) wave parametric sources. THz-waves can be generated by optical parametric processes based on laser light scattering from the polariton mode of nonlinear crystals. Using parametric oscillation of MgO-d...
CONFERENCE DIGEST OF THE 2006 JOINT 31ST INTERNATIONAL CONFERENCE ON INFRARED AND MILLIMETER WAVES AND 14TH INTERNATIONAL CONFERENCE ON TERAHERTZ ELECTRONICS 387-387 2006年 [査読有り]
We report on the efficient Cherenkov-type terahertz; (THz) generation using lithium niobate crystals and a high repetition rate femtosecond laser. An actively length controlled synchronously pumped ring resonator acts as an enhancement cavity for ...
IRMMW-THZ2005: THE JOINT 30TH INTERNATIONAL CONFERENCE ON INFRARED AND MILLIMETER WAVES AND 13TH INTERNATIONAL CONFERENCE ON TERAHERTZ ELECTRONICS, VOLS 1 AND 2 636-637 2005年 [査読有り]
We report on the generation of broadband terahertz (THz) pulses using Cherenkov-type generation in magnesium oxide doped lithium niobate (MgO:LN). A ring enhancement cavity for the femtosecond pump source led to an increased conversion efficiency ...
Proceedings of the 4th European Conference on Space Debris 587 501-505 2005年 [査読有り]
Formerly, microwave emission due to a hypervelocity impact to a metal had been found. The same experiments were carried out for various kinds of material: metal, ceramic, brick and rubber. The waveforms are quite different each other. For an alumi...
2012 IEEE MTT-S International Microwave Workshop Series on Innovative Wireless Power Transmission: Technologies, Systems, and Applications, IMWS-IWPT 2012 - Proceedings 131-134 2012年 [査読有り]
Toward the orbital demonstration of a solar power satellite (SPS), a breadboard model of the SPS has been developed for preliminary experiments including wireless power transmission. The model forms a thin panel structure with a thickness of 6 cm,...
2012 IEEE MTT-S International Microwave Workshop Series on Innovative Wireless Power Transmission: Technologies, Systems, and Applications, IMWS-IWPT 2012 - Proceedings 191-194 2012年 [査読有り]
We are developing a bread board model for a microwave wireless power transmission (WPT) from a satellite in orbit to the ground. WPT using microwaves is one of the critical and important technologies toward a solar power satellite (SPS). We have c...