TERAHERTZ BEAM STEERING APPARATUS AND METHOD THEREOF

To provide a terahertz beam scanning apparatus and method that can scan a terahertz beam at high speed over a wide angle. The terahertz beam scanning apparatus include: a laser device 12 that generates a first laser beam 1 and a second laser beam 2 having different wavelengths; a laser optical syste...

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Bibliographische Detailangaben
Hauptverfasser:	MAKI, KEN-ICHIRO, OTANI, CHIKO, SHIBUYA, TAKAYUKI, KAWASE, KODO
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	ANTENNAS, i.e. RADIO AERIALS BASIC ELECTRIC ELEMENTS DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH ISMODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THEDEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY,COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g.SWITCHING, GATING, MODULATING OR DEMODULATING ELECTRICITY FREQUENCY-CHANGING NON-LINEAR OPTICS OPTICAL ANALOGUE/DIGITAL CONVERTERS OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS OPTICAL LOGIC ELEMENTS OPTICS PHYSICS TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF
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Beschreibung
Zusammenfassung:	To provide a terahertz beam scanning apparatus and method that can scan a terahertz beam at high speed over a wide angle. The terahertz beam scanning apparatus include: a laser device 12 that generates a first laser beam 1 and a second laser beam 2 having different wavelengths; a laser optical system 14 that focuses the first laser beam 1 and the second laser beam 2 on a same common focal point 14b; and a terahertz generator 16 that is located at the common focal point and generates a terahertz beam 4 by difference frequency mixing. The laser optical system 14 is configured to be capable of changing a relative incidence ¸ i between the first laser beam and the second laser beam to the terahertz generator.