公开(公告)号：DE68923924T2

公开(公告)日：1996-04-18

申请号：DE68923924

申请日：1989-05-22

Applicant: IBM

Inventor： DULING III ,  GRISCHKOWSKY DANIEL R ,  HALBOUT JEAN-MARC ,  KETCHEN MARK B

IPC: H01L31/0248 ,  H01S3/00 ,  H03B11/00 ,  H04B10/00 ,  H04B10/02 ,  H04B10/10 ,  H04B10/118 ,  H04B10/22 ,  H04B10/43 ,  H04L27/04

Abstract: A communication system for transmitting and receiving terahertz signals has a emitter employing a resonant radiating antenna (5) connected to an ultrafast switch (6). The switch (6) is a subpicosecond photoconducting switch coupled to a coplanar transmission line (11) having a pair of approximately 1 micron wide A1 lines deposited on an SOS substrate. The transmission line (11) is separated from the tip of the antenna (5) by a photoconducting gap forming the switch and is driven by a laser pulse. Utilizing the gap excitation principle, the transmitting antenna (5) radiates a freely propagating signal that may be received by an identical structure either on the same or on different substrates.

公开(公告)号：DE68923924D1

公开(公告)日：1995-09-28

申请号：DE68923924

申请日：1989-05-22

Applicant: IBM

Inventor： DULING III ,  GRISCHKOWSKY DANIEL R ,  HALBOUT JEAN-MARC ,  KETCHEN MARK B

IPC: H01L31/0248 ,  H01S3/00 ,  H03B11/00 ,  H04B10/00 ,  H04B10/02 ,  H04B10/10 ,  H04B10/118 ,  H04B10/22 ,  H04B10/43 ,  H04L27/04

Abstract: A communication system for transmitting and receiving terahertz signals has a emitter employing a resonant radiating antenna (5) connected to an ultrafast switch (6). The switch (6) is a subpicosecond photoconducting switch coupled to a coplanar transmission line (11) having a pair of approximately 1 micron wide A1 lines deposited on an SOS substrate. The transmission line (11) is separated from the tip of the antenna (5) by a photoconducting gap forming the switch and is driven by a laser pulse. Utilizing the gap excitation principle, the transmitting antenna (5) radiates a freely propagating signal that may be received by an identical structure either on the same or on different substrates.