CN112164964A - Broadband intermittent terahertz radiation source and corresponding excitation method - Google Patents
Broadband intermittent terahertz radiation source and corresponding excitation method Download PDFInfo
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- CN112164964A CN112164964A CN202011089613.9A CN202011089613A CN112164964A CN 112164964 A CN112164964 A CN 112164964A CN 202011089613 A CN202011089613 A CN 202011089613A CN 112164964 A CN112164964 A CN 112164964A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
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Abstract
The invention relates to the field of terahertz waves, in particular to a broadband discontinuous terahertz radiation source, which comprises: an excitation body; the reflector is arranged on one side of the exciting body; the crystal is arranged on one side of the exciting body opposite to the reflecting body, and the exciting body, the reflecting body and the crystal are matched to meet the following conditions: the invention aims to provide a terahertz radiation source capable of generating terahertz waves with the wavelength within the range of 10u-1000u and with the waveform broken into a plurality of segments, and further discloses a broadband intermittent terahertz wave excitation method.
Description
The application is a divisional application of Chinese patent application 2018102316577 filed on 20/3/2018.
Technical Field
The invention relates to the field of terahertz waves, in particular to a broadband discontinuous terahertz radiation source.
Background
THz waves (terahertz waves) or THz rays (terahertz rays) have been formally named since the middle and late 80 s of the last century, and they have been collectively called far infrared rays by scientists.
Terahertz waves are electromagnetic waves with frequencies ranging from 0.1THz to 10THz, and have wavelengths ranging from 0.03mm to 3mm, which are between the infrared band and the millimeter waves.
The size of the material is between electrons and photons in the radiation wavelength, belongs to a transition region from electronics to photonics, and is in a transition region from a macroscopic classical theory to a microscopic quantum theory.
The infrared technology and the microwave technology on two sides of a terahertz radiation waveband are very mature, but the terahertz technology is still very incomplete, and the reason is that the waveband is not completely suitable for being processed by an optical theory or being researched by a microwave theory, and the wavelength range from 0.03mm to 3mm is too large in the current view, and in the field of terahertz waves, the wavelength in the wavelength range is not clearly distinguished to have a special effect.
In view of the close association between certain diseases of human body and terahertz waves, the applicant finds that broadband intermittent terahertz waves with the wavelength all in the range of 10u-1000u (at different moments, the terahertz waves have wave states with different characteristics in different wavelength intervals at different temperatures, and the wave states all are in the larger range of 10u-1000u, so as to define the broadband), and the waves are intermittent and discontinuous, so as to define the discontinuous), have great medical use effect, but unfortunately, no method for stably generating the broadband intermittent terahertz waves is found.
The traditional terahertz wave generating mode has two types, firstly, a radiation source is generated by an electronic method, when the frequency of the radiation source generated by the electronic method exceeds 1T, the output power and the working efficiency are sharply reduced, the service life is shortened, and the novel structure is also limited by the micro-processing technology; and secondly, a radiation source is generated by an optical method, and the radiation source generated by the optical method can obtain terahertz radiation with a wider spectrum range, but has large volume, high cost, large consumption and limited application.
Both of the two methods have technical defects at present, and the intermittent terahertz waves in the range of 10u-1000u required by us cannot be simultaneously and stably generated (the term "simultaneously" here means that a plurality of wave bands interrupted from 10u-1000u instead of a single wave beam are generated, and the wave bands have a plurality of wave crests and wave troughs).
Disclosure of Invention
In view of the problems in the prior art, the invention aims to provide a terahertz radiation source capable of generating terahertz waves with wavelengths in the range of 10u-1000u and with waveforms broken into a plurality of segments.
In order to achieve the purpose, the invention adopts the technical scheme that:
a broadband intermittent terahertz radiation source, comprising:
an excitation body;
the reflector is arranged on one side of the exciting body;
the crystal is arranged on one side of the exciting body opposite to the reflecting body, and the exciting body, the reflecting body and the crystal are matched to meet the following conditions: after the exciting body is energized and started, terahertz waves with the wavelength in the range of 10-1000 u and the waveform broken into a plurality of segments (the segments also include terahertz waves with the wavelength locked at a certain value) are finally output from the outer surface of the crystal.
The method comprises the steps of generating electric energy, heat energy, light energy or terahertz waves by starting an exciting body through energy supply, or any combination of the four kinds of energy (the exciting body is configured to generate the electric energy, the heat energy, the light energy or the terahertz waves after being excited, or the four kinds of energy are combined, the effect is best when the electric energy, the heat energy, the light energy and the terahertz waves are generated simultaneously, but only one, two or three of the electric energy, the heat energy, the light energy and the terahertz waves are generated, the method acts on a crystal to generate the terahertz waves (first step terahertz excitation), part of the terahertz waves generated by the first step terahertz excitation are output towards the outside of a radiation source, meanwhile, the crystal transmits part of the terahertz waves towards the inside of the radiation source, and the energy generated by the exciting body is combined and reflected by a reflector to finally contact the crystal to generate terahertz excitation (second step terahertz excitation), the terahertz excitation of the first step and the second step is combined (the terahertz wave and energy still flow reversely in the terahertz excitation of the second step and are reflected by a reflector again, theoretically, the terahertz excitation of the first step and the second step is an infinite process), and the terahertz wave with the wavelength within the range of 10u-1000u is finally output from the outer surface of the crystal, and most importantly, the waveform of the finally output terahertz wave is broken into a plurality of sections;
the effect is shown in figure 1, which is a wave spectrum of a material at three different excitation temperatures of an excitation body, three wave states (other dot-shaped or vertical wave states) are mainly provided, and the three wave states are mainly generated by different excitation temperatures of the exciting body, which actually correspond to specific operations, namely, different operation gears are used for controlling the excitation states (such as high, medium and low gears) of the exciting body, the generated waves are only different in wave state, but are necessarily wave-shaped and broken into a plurality of sections of terahertz waves within the range of 10u-1000u, which can be seen in figure 1, but not single-frequency-band wave beams, and meanwhile, some of the wave bands are dotted or vertical, the intensity of the wave of the specific wavelength is also constant, and the intensity of the wave of the specific wavelength in the vertical state has various intensities.
As a preferred aspect of the present invention, the crystal is configured to: after the terahertz wave is matched with the exciting body and the reflecting body for use, the terahertz wave with the wavelength within the range of 10-1000 u and the waveform broken into a plurality of sections is finally output from the outer surface of the crystal, the matching scheme of the exciting body, the reflecting body and the crystal is important, and the crystal structure plays a very critical role in the scheme.
As a preferred scheme of the present invention, the crystal is a layered structure, and is formed by stacking a plurality of flaky sub-crystals, "stacking a plurality of flaky sub-crystals" is a key to realize that "terahertz waves with a wavelength within a range of 10u to 1000u and a waveform broken into a plurality of segments are finally output from the outer surface of the crystal", and meanwhile, the stacking manner is also conveniently adjusted, different stacking numbers and stacked different crystals are set, so that different waveforms can be obtained, meanwhile, according to specific use requirements, detachable modular structures can be made among the sub-crystals, and when a specific waveform is required, a corresponding stacking scheme is adopted.
As a preferable aspect of the present invention, the fractional crystal includes: a first sub-crystal composed of an electronic crystal, a photonic crystal, or a combination of both.
An electronic crystal, i.e., an ionic crystal in which electrons act as anions, a photonic crystal refers to an artificial periodic dielectric structure having photonic band gap characteristics, the final crystal is obtained by combining the electronic crystal, the photonic crystal or the combination of the electronic crystal and the photonic crystal and combining the arrangement mode of superposition, and through the matching scheme of the exciting body, the reflecting body and the crystal, then, an excitation process is performed, so that terahertz waves with wave shape fracture into a plurality of segments within the range of 10u-1000u (at different time and different temperature states, the terahertz waves have different wave states, fig. 1 is a material, and wave spectrums of an excited body in three different states, wherein three wave states exist, and the main difference of generating the three wave states is that the excited temperature of the excited body is different, and the excited state of the excited body is actually controlled by different operation gears corresponding to specific operations).
As a preferable aspect of the present invention, the fractional crystal includes: the second sub-crystal comprises an electronic crystal, a photonic crystal or both, and the single sub-crystal is a mixture comprising the electronic crystal, the photonic crystal or both, and other materials are combined to form the second sub-crystal.
As a preferable aspect of the present invention, the fractional crystal further includes: the scheme that the first fractional crystal and the second fractional crystal in the fractional crystal (more than two fractional crystals due to superposition) are both provided can realize more waveform combination schemes.
In a preferred embodiment of the present invention, the terahertz wave having a certain fixed wavelength is a terahertz wave having a plurality of segments of the waveform.
The application also discloses a broadband intermittent terahertz wave excitation method, which comprises the following steps:
the crystal and the reflector are arranged on two sides of the exciting body, so that the matching among the exciting body, the reflector and the crystal meets the following requirements: after the exciting body is energized and started, the terahertz waves with the wavelength within the range of 10-1000 u and the waveform broken into a plurality of sections are finally output from the outer surface of the crystal;
energizing the energizer causes it to start.
The method comprises the steps of generating electric energy, heat energy, light energy or terahertz waves by starting an exciting body through energy supply, or any combination of the four kinds of energy (the exciting body is configured to generate the electric energy, the heat energy, the light energy or the terahertz waves after being excited, or the four kinds of energy are combined, the effect is best when the electric energy, the heat energy, the light energy and the terahertz waves are generated simultaneously, but only one, two or three of the electric energy, the heat energy, the light energy and the terahertz waves are generated, the method acts on a crystal to generate the terahertz waves (first step terahertz excitation), part of the terahertz waves generated by the first step terahertz excitation are output towards the outside of a radiation source, meanwhile, the crystal transmits part of the terahertz waves towards the inside of the radiation source, and the energy generated by the exciting body is combined and reflected by a reflector to finally contact the crystal to generate terahertz excitation (second step terahertz excitation), the terahertz excitation of the first step and the second step is combined (the terahertz wave and energy still flow reversely in the terahertz excitation of the second step and are reflected by a reflector again, theoretically, the terahertz excitation of the first step and the second step is an infinite process), and the terahertz wave with the wavelength within the range of 10u-1000u is finally output from the outer surface of the crystal, and most importantly, the waveform of the terahertz wave finally output is broken into a plurality of sections
The invention has the beneficial effects that:
the method comprises the steps of generating electric energy, heat energy, light energy or terahertz waves by starting an exciting body through energy supply, or any combination of the four kinds of energy (the exciting body is configured to generate the electric energy, the heat energy, the light energy or the terahertz waves after being excited, or the four kinds of energy are combined, the effect is best when the electric energy, the heat energy, the light energy and the terahertz waves are generated simultaneously, but only one, two or three of the electric energy, the heat energy, the light energy and the terahertz waves are generated, the method acts on a crystal to generate the terahertz waves (first step terahertz excitation), part of the terahertz waves generated by the first step terahertz excitation are output towards the outside of a radiation source, meanwhile, the crystal transmits part of the terahertz waves towards the inside of the radiation source, and the energy generated by the exciting body is combined and reflected by a reflector to finally contact the crystal to generate terahertz excitation (second step terahertz excitation), the terahertz excitation of the first step and the second step is combined (the terahertz wave and energy still flow reversely in the terahertz excitation of the second step and are reflected by the reflector again, theoretically, the terahertz excitation of the first step and the second step is an infinite process), and the terahertz wave with the wavelength within the range of 10u-1000u is finally output from the outer surface of the crystal, and most importantly, the waveform of the finally output terahertz wave is broken into a plurality of sections.
Drawings
FIG. 1 is a terahertz wave spectrum of a crystal at different excitation temperatures in example 1 of the present invention;
FIG. 2 is a schematic structural view of embodiment 1 of the present invention;
FIG. 3 is an exploded view of the structure of example 1 of the present invention;
FIG. 4 is a schematic structural view of an exciting body of embodiment 1 of the present invention;
fig. 5 is a schematic structural view of a reflector of embodiment 1 of the present invention;
fig. 6 is a schematic structural view of an exciter according to embodiment 2 of the present invention.
FIG. 7 is a schematic structural view of embodiment 2 of the present invention;
FIG. 8 is a schematic structural view of a nanocrystal of example 1 of the present invention;
the labels in the figure are: 1-crystal, 2-exciter, 3-reflector, 4-conductive copper strip, 5-insulating substrate, 6-exciter strip, 7-bulge, 8-insulating layer, and 9-crystal.
Detailed Description
The present invention will be described in further detail with reference to examples and embodiments. It should be understood that the scope of the above subject matter of the present invention is not limited to the following examples, and any technique realized based on the summary of the present invention is within the scope of the present invention.
Example 1
Referring to fig. 2-5, a broadband intermittent terahertz radiation source includes:
an exciting body 2;
a reflector 3, wherein the reflector 3 is disposed on one side of the exciter 2, in this embodiment, the reflector 3 is a metal film (the reflector 3 has a reflective function, and can reflect not only light energy, but also electric energy, heat energy, terahertz waves, or the like), and the reflective surface (facing the exciter 2) is configured as a plurality of protrusions 7 (the top profile of a single protrusion 7 is rectangular, as shown in fig. 5, and fig. 5 is a top view), and the protrusions 7 are arranged in a rectangular array;
a crystal 1, wherein the crystal 1 is arranged on the side of the exciter 2 opposite to the reflector 3 (the combined position relationship is shown in fig. 2, and is in a superimposed form, and fig. 3 is an exploded side view for showing that the exciter 2, the reflector 3 and the crystal 1 are all sheet structures), and the cooperation of the exciter 2, the reflector 3 and the crystal 1 satisfies: after the exciting body 2 is energized and started, the terahertz wave with the wavelength in the range of 10u-1000u and the waveform broken into a plurality of segments is finally output from the outer surface of the crystal 1 (after the crystal 1 is matched with the exciting body 2 and the reflector 3 for use, the terahertz wave with the wavelength in the range of 10u-1000u and the waveform broken into a plurality of segments is finally output from the outer surface of the crystal 1).
As shown in fig. 8, the crystal 1 is a layered structure, and is formed by stacking a plurality of flaky sub-crystals 9.
In this embodiment, the crystal 9 includes: a first sub-crystal composed of the electronic crystal 1, the photonic crystal 1 or a crystal 1 formed by combining the two, and a second sub-crystal containing the electronic crystal 1, the photonic crystal 1 or both.
Meanwhile, the wave form is broken into a plurality of sections of terahertz waves, the terahertz waves have a certain fixed wavelength, the intensity of the wave may be a fixed value, such as several individual "black dots" in fig. 1, or may be several intensities simultaneously, such as several individual "vertical lines" in fig. 1, therefore, in the range of 10-1000 u, the wavelength of the terahertz wave can be a single wavelength value, such as 10, 20, 30 … … 1000u, within a single wavelength value, the intensity of the wave may be only one, or may have multiple intensities, and meanwhile, the single wavelength may also be a range of waves, such as 10-20, 20-30 … … 990-.
As for the structure of the exciting body 2, specifically, as shown in fig. 4, the exciting body 2 includes:
an insulating substrate 5;
The embodiment also discloses a broadband intermittent terahertz wave excitation method, which comprises the following steps:
the crystal 1 and the reflector 3 are arranged on two sides of the exciting body 2, so that the cooperation of the exciting body 2, the reflector 3 and the crystal 1 meets the following requirements: after the exciting body 2 is energized and started, terahertz waves with the wavelength within the range of 10-1000 u and the waveform broken into a plurality of sections are finally output from the outer surface of the crystal 1;
energising the energiser body 2 causes it to start.
Example 2
As shown in fig. 6 and 7, the present embodiment is different from embodiment 1 in that the nanocrystal 9 includes only: the second partial crystal comprises an electronic crystal 1, a photonic crystal 1 or both (a single partial crystal 9 is a mixture comprising the electronic crystal 1 and the photonic crystal 1 or both, and then other materials are combined to form the second partial crystal), the conductive copper strip 4 is arranged around the top of the insulating substrate 5, a plurality of excitation bands 6 are arranged in a structure like a Chinese character 'jing', and two ends of the excitation bands are connected to the conductive copper strip 4, secondly, in the embodiment, the excitation bands 6 are other heating devices which do not or not completely comprise carbon fibers and graphene combined with the carbon fibers, such as resistance wires, lasers, plasmas or photoelectric irradiation devices, as long as the conditions of 'generation of electric energy, heat energy, optical energy or terahertz wave after being excited, or any combination of the four energies' are met; furthermore, the reflector 3 is a non-metallic reflector 3, for example a mirror, belonging to the non-metallic reflector 3.
Meanwhile, in the embodiment, the heat-insulating layer is arranged on one side, opposite to the crystal 1, of the reflector 3, and the loss of part of heat energy to the outside of the radiation source is prevented through the reflection principle.
Example 3
This embodiment differs from embodiment 1 in that the nanocrystal 9 comprises only: a first sub-crystal composed of a crystal 1 formed by combining an electronic crystal 1, a photonic crystal 1 or both.
Claims (6)
1. A broadband intermittent terahertz radiation source is characterized by comprising:
an excitation body;
the reflector is arranged on one side of the exciting body;
the crystal is arranged on one side of the exciting body opposite to the reflecting body, and the exciting body, the reflecting body and the crystal are matched to meet the following conditions: after the exciting body is energized and started, the terahertz waves with the wavelength within the range of 10-1000 u and the waveform broken into a plurality of sections are finally output from the outer surface of the crystal;
wherein, the crystal is a laminated structure, and is formed by overlapping a plurality of flaky sub-crystals, and the sub-crystals comprise: a first sub-crystal composed of an electronic crystal, a photonic crystal, or a combination of both.
2. The broadband intermittent terahertz radiation source of claim 1, wherein the crystal is configured to: after the terahertz wave is matched with the exciting body and the reflecting body for use, the terahertz wave with the wavelength within the range of 10-1000 u and the waveform broken into a plurality of sections is finally output from the outer surface of the crystal.
3. The broadband intermittent terahertz radiation source of claim 2, wherein the molecular crystal comprises: a second sub-crystal comprising an electronic crystal, a photonic crystal, or both.
4. The broadband intermittent terahertz radiation source of claim 1, wherein the molecular crystal further comprises: a second sub-crystal comprising an electronic crystal, a photonic crystal, or both.
5. The broadband intermittent terahertz radiation source of any one of claims 1 to 4, wherein the waveform is broken into a plurality of segments of terahertz waves, including waves with a certain fixed wavelength.
6. A broadband intermittent terahertz wave excitation method is characterized by comprising the following steps:
the broadband intermittent terahertz radiation source of claim 1 is used, a crystal and a reflector are arranged on two sides of an excitation body, and the excitation body, the reflector and the crystal are matched to meet the following conditions: after the exciting body is energized and started, the terahertz waves with the wavelength within the range of 10-1000 u and the waveform broken into a plurality of sections are finally output from the outer surface of the crystal;
energizing the energizer causes it to start.
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| CN201810231657.7A CN108376899A (en) | 2018-03-20 | 2018-03-20 | A kind of wideband interruption terahertz emission source and corresponding exciting method |
| CN202011089613.9A CN112164964A (en) | 2018-03-20 | 2018-03-20 | Broadband intermittent terahertz radiation source and corresponding excitation method |
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