35TH INTERNATIONAL CONFERENCE ON INFRARED, MILLIMETER, AND TERAHERTZ WAVES (IRMMW-THZ 2010) 2010年 [査読有り]
The generation of terahertz (THz) radiation is demonstrated by using the spatial dispersion of an femtosecond optical pulse. The overlap of two dispersed beams with a spatial shift allows us to generate a narrowband radiation on the basis of photo...
2009 34TH INTERNATIONAL CONFERENCE ON INFRARED, MILLIMETER, AND TERAHERTZ WAVES, VOLS 1 AND 2 607-+ 2009年 [査読有り]
Femtosecond optical pulse train is produced by the reflections on the step mirror which consists of two D-shape mirrors. The THz radiation is generated from the photoconductive antenna pumped by the pulse train and the frequency tuning is achieved...
Ken-ichiro Maki Takayuki Shibuya Chiko Otani Koji Suizu Kodo Kawase
2009 34TH INTERNATIONAL CONFERENCE ON INFRARED, MILLIMETER, AND TERAHERTZ WAVES, VOLS 1 AND 2 604-604 2009年 [査読有り]
Terahertz (THz) beam steering is demonstrated based on the phased-array antenna principle without using actual phase shifters. The THz radiation angle from lithium niobate crystal can be varied by adjusting the incidence angle of the pump beam. Th...
Ken-ichiro Maki Takayuki Shibuya Chiko Otani Kodo Kawase
2008 33RD INTERNATIONAL CONFERENCE ON INFRARED, MILLIMETER AND TERAHERTZ WAVES, VOLS 1 AND 2 681-+ 2008年 [査読有り]
Terahertz (THz) beam steering by using difference frequency mixing and phased array antenna principle was demonstrated. The THz radiation was generated by pumping with spatially dispersed beams produced from an ultrafast laser. And the THz beam co...
D. Molter M. Theuer G. Torosyan R. Beigang K. Maki C. Otani
2007 JOINT 32ND INTERNATIONAL CONFERENCE ON INFRARED AND MILLIMETER WAVES AND 15TH INTERNATIONAL CONFERENCE ON TERAHERTZ ELECTRONICS, VOLS 1 AND 2 455-+ 2007年 [査読有り]
We report on an actively controlled enhancement cavity for terahertz generation using optical rectification in lithium niobate. By recycling the transmitted fundamental laser power from a Ti:Sapphire laser an increased pump power is available for ...
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,...
Koji Tanaka Maki Kenichiro Masashi Takahashi Tadashi Ishii Susumu Sasaki
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...
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