公开(公告)号：US3571592A

公开(公告)日：1971-03-23

申请号：US3571592D

申请日：1968-08-01

Applicant: BELL TELEPHONE LABOR INC

Inventor： GLASS ALASTAIR M

IPC: G01J5/02 ,  G01J1/02 ,  G01J5/34 ,  G02F2/00 ,  G01K7/02 ,  H01J39/00

CPC classification number: G02F2/00

Abstract: A class of materials exemplified by mixed crystals of barium niobate and strontium niobate acts as a radiation detector by reason of the change in polarization resulting from the heating produced by an incident beam. This pyroelectric response is sufficiently rapid for infrared radiation that a pulse train well in excess of a megabit per second may be followed for incident beam power well below 1 watt.