Apparatus and method for providing terahertz waves

Patent metadata

Field	Value
Publication number	US-2018136397-A1
Application number	US-201715808640-A
Country	US
Kind code	A1
Filing date	Nov 9, 2017
Priority date	Nov 15, 2016
Publication date	May 17, 2018
Grant date	—

Abstract

An apparatus providing a terahertz (THz) wave may comprise at least one THz wave generator each of which generates a THz wave; at least one first phase adjuster adjusting a phase of the generated THz wave; at least one waveguide part receiving and combining the at least one phase-adjusted THz wave radiated from the at least one first phase adjuster, and guiding the combined THz wave; at least one second phase adjuster adjusting a phase of the combined THz wave from the at least one waveguide part, which is connected to the at least one waveguide part or disposed in a portion of the at least one waveguide part; and an output module outputting the THz wave guided from the at least one waveguide part.

First claim

What is claimed is:

1 . An apparatus providing a terahertz (THz) wave, the apparatus comprising:
at least one THz wave generator each of which generates a THz wave; at least one first phase adjuster adjusting a phase of the generated THz wave; at least one waveguide part receiving and combining the at least one phase-adjusted THz wave radiated from the at least one first phase adjuster, and guiding the combined THz wave; at least one second phase adjuster adjusting a phase of the combined THz wave from the at least one waveguide part, which is connected to the at least one waveguide part or disposed in a portion of the at least one waveguide part; and an output module outputting the THz wave guided from the at least one waveguide part.

2 . The apparatus according to claim 1 , wherein output intensity distribution and phase distribution of the output THz wave are controlled by the at least one waveguide part and the at least one second phase adjuster.

3 . The apparatus according to claim 1 , wherein at least a portion of the at least one waveguide part is positioned on a horn antenna or a lens that receives the at least one phase-adjusted THz wave.

4 . The apparatus according to claim 1 , wherein the at least one second phase adjuster includes at least one unevenness formed by etching or attaching in the at least one waveguide part.

5 . The apparatus according to claim 1 , wherein the at least one waveguide part includes a first cylindrical waveguide and a second cylindrical waveguide surrounding the first cylindrical waveguide, and the first cylindrical waveguide and the second cylindrical waveguide have a same center.

6 . The apparatus according to claim 1 , wherein the first cylindrical waveguide includes at least one window to guide a THz wave guided via the first cylindrical waveguide to the second cylindrical waveguide through the window.

7 . The apparatus according to claim 6 , wherein the second cylindrical waveguide performs a rotational reciprocating motion or a unidirectional rotational motion within a certain angle.

8 . The apparatus according to claim 1 , wherein the output module includes at least one of an antenna, a lens, and an aperture to output the THz wave in a form of a Gaussian beam or a line beam.

9 . An apparatus providing a terahertz (THz) wave, the apparatus comprising:
a THz wave generating module generating at least one THz wave; a combining module combining the at least one THz wave by controlling phase distribution and intensity distribution of the at least one THz wave radiated from the THz wave generating module, and guiding the combined THz wave through at least one waveguide part; and an output module outputting the THz wave guided from the combining module.

10 . The apparatus according to claim 9 , wherein the combining module includes a horn antenna receiving the at least one THz wave radiated from the THz wave generating module.

11 . The apparatus according to claim 9 , wherein the combining module includes at least one waveguide part.

12 . The apparatus according to claim 11 , wherein the combining module further includes at least one phase adjuster which is connected to the at least one waveguide part or disposed in at least a portion in the at least one waveguide part.

13 . The apparatus according to claim 12 , wherein the at least phase adjuster includes at least one unevenness formed by etching or attaching in the combining module or the at least one waveguide part.

14 . The apparatus according to claim 11 , wherein the at least one waveguide part includes a first cylindrical waveguide and a second cylindrical waveguide surrounding the first cylindrical waveguide, and the first cylindrical waveguide and the second cylindrical waveguide have a same center.

15 . The apparatus according to claim 11 , wherein the first cylindrical waveguide includes at least one window to guide a THz wave guided via the first cylindrical waveguide to the second cylindrical waveguide through the window.

16 . The apparatus according to claim 11 , wherein the second cylindrical waveguide performs a rotational reciprocating motion or a unidirectional rotational motion within a certain angle.

17 . The apparatus according to claim 9 , wherein the output module includes at least one of an antenna, a lens, and an aperture to output the THz wave in a form of a Gaussian beam or a line beam.

18 . A method for providing a terahertz (THz) wave, the method comprising:
generating at least one THz wave; primarily adjusting a phase of each of the at least one THz wave; receiving and combining the at least one primarily phase-adjusted THz wave and secondarily adjusting a phase of the combined THz wave by using at least one waveguide part and at least one phase adjuster, so as to control phase distribution and output intensity distribution of the combined THz wave; controlling a profile and a direction of a THz wave beam through a rotational motion of at least one waveguide included in the at least one waveguide part; and outputting the THz wave beam.

19 . The method according to claim 18 , wherein the at least one waveguide part includes a first cylindrical waveguide and a second cylindrical waveguide surrounding the first cylindrical waveguide, and the first cylindrical waveguide and the second cylindrical waveguide have a same center.

20 . The method according to claim 19 , wherein the second cylindrical waveguide performs a rotational reciprocating motion or a unidirectional rotational motion within a certain angle.

Assignees

• Electronics & Telecommunications Res Inst

Inventors

• Park Kyung Hyun
• Lee Il Min
• Lee Eui Su
• Lee Ho Jin
• Han Sang Pil
• Kim Hyun Soo
• Moon Ki Won
• Park Dong Woo

Classifications

• G02B6/262 Primary

  Optical details of coupling light into, or out of, or between fibre ends, e.g. special fibre end shapes or associated optical elements · CPC title

• G02B27/0927

  Systems for changing the beam intensity distribution, e.g. Gaussian to top-hat · CPC title

• G02B6/10 Primary

  of the optical waveguide type (G02B6/02, G02B6/24 take precedence; devices or arrangements for the control of light by electric, magnetic, electro-magnetic or acoustic means G02F1/00; transferring the modulation of modulated light G02F2/00; optical logic elements G02F3/00; optical analogue/digital converters G02F7/00) · CPC title

• G02B27/0944

  Diffractive optical elements, e.g. gratings, holograms (gratings per se G02B5/18; holograms used as optical elements per se G02B5/32) · CPC title

• G02B6/24

  Coupling light guides · CPC title