Waveform information acquisition apparatus and waveform information acquisition method
First Claim
1. A waveform information acquisition apparatus for acquiring information regarding a temporal waveform of a terahertz wave, which comprises:
- a generation portion for generating a terahertz wave;
a detection portion for detecting waveform information of the terahertz wave; and
a first delay portion for changing a time period from generation of the terahertz wave in the generation portion to detection of the terahertz wave as the waveform information of the terahertz wave in the detection portion,wherein the first delay portion is configured so as to change a propagation velocity of the terahertz wave generated by the generation portion, andwherein the waveform information of the terahertz wave detected by the detection portion and the propagation velocity are associated with each other for each terahertz wave generated by the generation portion.
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Abstract
Provided are an apparatus and a method which enable acquisition of a temporal waveform of a propagating terahertz wave by changing a propagation velocity of the terahertz wave. A waveform information acquisition apparatus includes a generation portion for generating a terahertz wave, a propagation portion for allowing the terahertz wave generated by the generation portion to propagate therethrough, a detection portion for detecting waveform information of the terahertz wave, a first delay portion for changing a propagation velocity of the terahertz wave, and a control portion for controlling the first delay portion to change the propagation velocity of the terahertz wave in the propagation portion, and acquires information regarding the temporal waveform of the terahertz wave detected by the detection portion.
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Citations
14 Claims
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1. A waveform information acquisition apparatus for acquiring information regarding a temporal waveform of a terahertz wave, which comprises:
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a generation portion for generating a terahertz wave; a detection portion for detecting waveform information of the terahertz wave; and a first delay portion for changing a time period from generation of the terahertz wave in the generation portion to detection of the terahertz wave as the waveform information of the terahertz wave in the detection portion, wherein the first delay portion is configured so as to change a propagation velocity of the terahertz wave generated by the generation portion, and wherein the waveform information of the terahertz wave detected by the detection portion and the propagation velocity are associated with each other for each terahertz wave generated by the generation portion. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A waveform information acquisition method comprising:
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allowing a terahertz wave to propagate; acquiring waveform information of the terahertz wave propagating at a first propagation velocity; changing a propagation velocity of the terahertz wave to a second propagation velocity; acquiring waveform information of the terahertz wave propagating at the second propagation velocity; and acquiring information regarding a temporal waveform acquired from the waveform information of the terahertz wave propagating at the first propagation velocity and the terahertz wave propagating at the second propagation velocity. - View Dependent Claims (13)
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14. A terahertz time domain spectroscopy method comprising:
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generating a terahertz wave; allowing the generated terahertz wave to propagate; detecting information regarding the propagating terahertz wave; and constructing a temporal waveform of the terahertz wave from the detected information regarding the terahertz wave, wherein a propagation velocity of the terahertz wave is changed to acquire the temporal waveform.
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Specification