公开(公告)号：US5034921A

公开(公告)日：1991-07-23

申请号：US375983

申请日：1989-07-06

申请人： Kazutoshi Nakajima ,  Hirofumi Kan ,  Kenichi Sugimoto ,  Yoshihiko Mizushima ,  Toru Hirohata ,  Takashi Iida ,  Yoshihisa Warashina ,  Toru Hirohata ,  Takashi Iida

发明人： Kazutoshi Nakajima ,  Hirofumi Kan ,  Kenichi Sugimoto ,  Yoshihiko Mizushima ,  Toru Hirohata ,  Takashi Iida ,  Yoshihisa Warashina ,  Toru Hirohata ,  Takashi Iida

IPC分类号： G11C11/42 ,  G11C7/00 ,  G11C11/36

CPC分类号： G11C7/005 ,  G11C11/36

摘要： An optical memory circuit comprises two photodetectors, and an intermediate signal conductor for connecting the two photodetectors, wherein the two photodetectors and the signal conductor are connected in series in a closed circuit, wherein each of the photodetectors comprises two spaced Schottky electrodes symmetrically disposed on a semiconductor substrate and the signal conductor has a capacitance with a time constant of a potential of the signal conductor such that charges are stored in the signal conductor when an optical write signal is incident on one photodetector and stored charges are released from the signal conductor when an optical read signal is incident on the other photodetector.

公开(公告)号：US5020064A

公开(公告)日：1991-05-28

申请号：US393275

申请日：1989-08-14

申请人： Yoshihiko Mizushima ,  Takashi Iida ,  Toru Hirohata ,  Kenichi Sugimoto ,  Yoshihisa Warashina ,  Kazutoshi Nakajima

发明人： Yoshihiko Mizushima ,  Takashi Iida ,  Toru Hirohata ,  Kenichi Sugimoto ,  Yoshihisa Warashina ,  Kazutoshi Nakajima

IPC分类号： G01R23/16 ,  H01S3/09 ,  H01S3/10 ,  H01S3/108 ,  H01S3/30 ,  H01S4/00

CPC分类号： H01S3/0903

摘要： An electromagnetic wave device having an amplification function comprises a medium containing free carriers, means for applying a magnetic field to the medium, means for applying an input electromagnetic wave to the medium in a direction perpendicular to the magnetic field, and means for generating an electric field to accelerating the carriers in the direction of the input electromagnetic wave. A frequency of the input electromagnetic wave is within the range of the plasma frequency plus or minus the cyclotron frequency, and a polarization direction of the input electromagnetic wave is perpendicular both to the magnetic field and its own traveling direction. Furthermore, the device has such functions as oscillation, modulation, frequency conversion, etc. depending on the type of added units.