CN105158199A - Device for testing absorption response of terahertz waves in different gas environments - Google Patents
Device for testing absorption response of terahertz waves in different gas environments Download PDFInfo
- Publication number
- CN105158199A CN105158199A CN201510640531.1A CN201510640531A CN105158199A CN 105158199 A CN105158199 A CN 105158199A CN 201510640531 A CN201510640531 A CN 201510640531A CN 105158199 A CN105158199 A CN 105158199A
- Authority
- CN
- China
- Prior art keywords
- thz wave
- gas
- terahertz
- vacuum pipe
- catoptron
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000012360 testing method Methods 0.000 title claims abstract description 20
- 238000010521 absorption reaction Methods 0.000 title abstract description 22
- 238000001514 detection method Methods 0.000 claims abstract description 26
- 238000001228 spectrum Methods 0.000 claims abstract description 22
- 238000002347 injection Methods 0.000 claims description 8
- 239000007924 injection Substances 0.000 claims description 8
- 239000013078 crystal Substances 0.000 claims description 6
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 5
- 239000004809 Teflon Substances 0.000 claims description 5
- 229920006362 Teflon® Polymers 0.000 claims description 5
- 229910052710 silicon Inorganic materials 0.000 claims description 5
- 239000010703 silicon Substances 0.000 claims description 5
- 230000003993 interaction Effects 0.000 claims description 3
- 238000012806 monitoring device Methods 0.000 claims description 3
- 239000000523 sample Substances 0.000 abstract description 3
- 238000010438 heat treatment Methods 0.000 abstract description 2
- 238000005057 refrigeration Methods 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 47
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 4
- 229910001882 dioxygen Inorganic materials 0.000 description 4
- 238000004891 communication Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 239000005436 troposphere Substances 0.000 description 2
- 238000000862 absorption spectrum Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000001307 helium Substances 0.000 description 1
- 229910052734 helium Inorganic materials 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- VIKNJXKGJWUCNN-XGXHKTLJSA-N norethisterone Chemical compound O=C1CC[C@@H]2[C@H]3CC[C@](C)([C@](CC4)(O)C#C)[C@@H]4[C@@H]3CCC2=C1 VIKNJXKGJWUCNN-XGXHKTLJSA-N 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
- G01N21/35—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light
- G01N21/3581—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light using far infrared light; using Terahertz radiation
- G01N21/3586—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light using far infrared light; using Terahertz radiation by Terahertz time domain spectroscopy [THz-TDS]
Abstract
The invention relates to a device for testing the absorption response of terahertz waves in different gas environments. An ultrashort-pulse laser output from a laser light source is divided into two beams through a beam splitting sheet, and a transmitted beam passes through a first reflecting mirror, a delay module, a second reflecting mirror, a third reflecting mirror and an ITO film and then serves as terahertz wave probe light to enter a terahertz wave spectrum detection system. The other part of light beam reflected by the beam splitting sheet enters a terahertz wave transmitting system. Radiated collimating terahertz waves enter a vacuum pipeline filled with gas through a terahertz wave inlet window flake. After the terahertz waves interact with gas molecules and is emergent from a terahertz wave outlet window flake, the terahertz waves enter the terahertz wave transmitting system after passing through a fourth reflecting mirror and the ITO film. A heating belt and a refrigeration device are arranged on the outer wall of the vacuum pipeline, and the real-time temperature inside the vacuum pipeline is controlled. The total length of the vacuum pipeline can be adjusted by inserting a plurality of sections of vacuum pipelines. By the adoption of the device, the absorption response characteristic of the terahertz waves in the gas environments of different temperatures and pressure intensities can be tested.
Description
Technical field
The present invention relates to a kind of tera-hertz spectra field, particularly a kind ofly test the device that THz wave absorbs response under gas with various environment.
Background technology
THz wave refers to the electromagnetic wave (1THz=10 of frequency 0.1-10THz scope (wavelength arrives 3mm scope 0.03)
12hz), in electromagnetic wave spectrum between microwave and infrared radiation.The special electromagnetic wave spectrum position of THz wave makes it have the advantage of many uniquenesses, such as photon energy is low, in milli electron-volt magnitude, harmful photoionization can not be produced to biological tissue, a lot of material has very strong absorption and dispersion at this wave band, may be used for differentiating different material etc.
There is various material in air, certain non-cooperating is existed for terahertz emission transmission, namely there is attenuation by absorption.Troposphere air has obviously continuous and absorption to Terahertz, shows as while attenuation coefficient slowly rises with frequency and distributes in vibration, there is multiple absorption peak and transmission window.Because current terahertz emission source power also cannot be accomplished enough large, therefore the application such as Terahertz communication and radar in troposphere will be realized, grasping position and the width of the terahertz wave band atmospheric window under different humidity, temperature, pressure, component condition, is the basic condition of this terahertz wave band of development utilization.
When THz wave is by tested gas, the energy of gas molecules sorb THz wave, gas with various molecule has different absorption spectrums to THz wave, and the absorption intensity of characteristic spectrum is relevant to the concentration and environment temperature etc. of this gas, utilize the absorption of gas molecule THz wave under namely the characteristic absorption peak of terahertz wave band can know this gas condition to respond, have important application to Terahertz communication and Long-distance Control etc.
Summary of the invention
The present invention be directed to the problem lacking THz wave absorption response data in air at present, propose and a kind ofly test the device that THz wave absorbs response under gas with various environment, have employed Terahertz generation and sniffer, vacuum pipe (can length be changed), vacuum pump, heat band, refrigerating plant, pressure gauge, gas injection apparatus, the absorption response characteristic of Terahertz under different temperatures, different pressure gas environment can be recorded.
Technical scheme of the present invention is: a kind ofly test the device that THz wave absorbs response under gas with various environment, comprises LASER Light Source, beam splitting chip, first catoptron, time delay module, the second catoptron, 3rd catoptron, THz wave emission coefficient, Terahertz entrance window, Terahertz outlet window, vacuum pipe, more piece vacuum pipe, heat band, refrigerating plant, the 4th catoptron, ito film, Terahertz wave spectrum detection system;
The ultra-short pulse laser exported from LASER Light Source is divided into two bundles via beam splitting chip, transmitted light beam is after the first catoptron reflection, by time delay module, then enter Terahertz wave spectrum detection system as THz wave detection light after the second catoptron, the 3rd catoptron and ito film; Another part beam splitting chip folded light beam enters THz wave emission coefficient, the THz wave giving off collimation is entered by Terahertz entrance window and is filled with in the vacuum pipe of gas, after THz wave and gas interaction of molecules, after the outgoing of Terahertz outlet window, by entering THz wave spectrum detection system after the 4th catoptron and ito film;
Vacuum pipe outer wall heats band and refrigerating plant, for controlling the real time temperature of vacuum pipe inside;
The total length of vacuum pipe regulates by inserting more piece vacuum pipe.
Described test THz wave absorbs the device of response under gas with various environment, also comprise pressure monitoring device, first valve, vacuum pump, second valve, has the first valve between vacuum pump and vacuum pipe, have the second valve between vacuum pipe and gas injection apparatus, pressure detection means is connected on the pipeline between the first valve and the second valve, for detecting the pressure in vacuum pipe.
Described ito film can be replaced by high resistant silicon chip.
Described THz wave emission coefficient comprises condenser lens, frequency-doubling crystal BBO and Teflon lens successively, reflects laser condenser lens and frequency-doubling crystal BBO form air plasma, and the taper THz wave given off is by becoming the THz wave of collimation after Teflon lens.
In described vacuum pipe, gas is any one high-pure gas, or the mixed gas of high-pure gas.
Beneficial effect of the present invention is: the present invention tests the device that THz wave absorbs response under gas with various environment, and resolution is high, and device is simple, easily operates, applied range.
Accompanying drawing explanation
Fig. 1 is the device schematic diagram that the present invention tests that THz wave absorbs response under gas with various environment;
Fig. 2 inserts the little vacuum pipe device schematic diagram of more piece in vacuum pipe of the present invention;
Fig. 3 is the device schematic diagram of THz wave emission coefficient of the present invention;
Fig. 4 is the device schematic diagram of Terahertz wave spectrum detection system of the present invention.
Fig. 5 is that the present invention tests THz wave and under gas with various environment, absorbs ITO in the device of response be changed to high resistant silicon chip schematic diagram.
Embodiment
Test the device that THz wave absorbs response under gas with various environment as shown in Figure 1, comprise LASER Light Source 1, beam splitting chip 2, first catoptron 3, time delay module 4, the second catoptron 5,3rd catoptron 6, THz wave emission coefficient 7, Terahertz entrance window 8, Terahertz outlet window 9, vacuum pipe 10, more piece vacuum pipe 11, heats band 12, refrigerating plant 13, pressure monitoring device 14, first valve 15, vacuum pump 16, the second valve 17, gas injection apparatus 18,4th catoptron 19, ito film 20, Terahertz wave spectrum detection system 21.The ultra-short pulse laser exported from LASER Light Source 1 is divided into two bundles via beam splitting chip 2, transmitted light beam is after the first catoptron 3, by time delay module 4, then enter Terahertz wave spectrum detection system 21 as THz wave detection light after the second catoptron 5, the 3rd catoptron 6 and ito film 20; Another part beam splitting chip 2 folded light beam enters THz wave emission coefficient 7, and the THz wave giving off collimation enters vacuum pipe 10 by Terahertz entrance window 8.The inner initial gas existed of vacuum pipe 10 is first taken out by vacuum pump 16, pressure detection means 14 detects after vacuum pipe 10 inside reaches the background pressure values of needs, close the first valve 15 between vacuum pump 16 and vacuum pipe 10, open the second valve 17 between vacuum pipe 10 and gas injection apparatus 18 again, by the gas access of gas injection apparatus 18 to injecting gas in vacuum pipe 10, pressure detection means 14 closes the second valve 17 after the pressure that the inflated scale of construction reaches needed for detection being detected.The real time temperature of vacuum pipe 10 inside can be controlled by heating band 12 or refrigerating plant 13, THz wave and gas molecule interact in vacuum pipe 10, and the total length of vacuum pipe can regulate by inserting more piece vacuum pipe 11, as shown in Figure 2, the interaction distance of THz wave and gas molecule is made can to adjust according to the characteristic of gas molecule.Terahertz light, by after the outgoing of Terahertz outlet window 9, composes detection system 21 by entering THz wave after the 4th catoptron 19 and ito film 20.The Terahertz wave spectrum obtained there will be absorption peak compared to wave spectrum when interacting without gas, can infer the absorption characteristics of gas molecule from the absorption peak Terahertz wave spectrum, thus realizes the absorption response of test THz wave under gas with various environment.
In the following embodiments, be that the femtosecond laser of 800nm utilizes air plasma to give off THz wave to interact under high purity oxygen gas normal temperature condition environment with centre wavelength, and utilizing electric light to adopt principle detection THz wave to be example, its all band, other terahertz radiation methods and other high-purity gas are consistent with this implementation method.
It is 800nm that laser instrument exports center wavelength of light, spectral range 780-820nm, pulse width is 30fs, repetition frequency 1KHz, the adjustment process that specific implementation detects oxygen molecule absorption characteristic is as follows: the ultra-short pulse laser exported from LASER Light Source 1 is 1:9 through the transmission and reflection ratio of beam splitting chip 2(beam splitting) be divided into two bundles, after wherein transmitted light is reflected by the first catoptron 3, by time delay module 4, then enter Terahertz wave spectrum detection system 21 as THz wave detection light after the second catoptron 5, the 3rd catoptron 6 and ito film 20; The reflects laser of beam splitting chip 2 directly enters THz wave emission coefficient 7, air plasma is formed successively as shown in Figure 3 by inner condenser lens 7-1 and frequency-doubling crystal BBO7-2, the taper THz wave given off is by becoming the THz wave of collimation after Teflon lens 7-3, enter vacuum pipe 10 from Terahertz entrance window 8, THz wave is at vacuum pipe 10 internal communication.By inserting more piece vacuum pipe 11 by after the length adjustment of vacuum pipe 10 to the distance length of test needs, by vacuum pump 16, vacuum pipe 10 is extracted into into pressure 10
-4pa(is recorded by pressure detection means 14), close the first valve 15, open the second valve 17, inject high purity oxygen gas (purity 99.999%) by gas injection apparatus 18.Gas is filled with and reaches pressure values to be measured, after an atmospheric pressure, closes the second valve 17.Heat band 12 and refrigerating plant 13 does not act on, test and carry out under normal temperature condition.THz wave is through arriving Terahertz outlet window 9 after high purity oxygen gas, continue forward direction, by being reflected by ito film 20 after the 4th catoptron 19, enter electro-optic crystal ZnTe21-1, the convex lens 21-2 of Terahertz wave spectrum detection system inside together with overlapping with the detection light via ito film 20 transmission successively, quarter-wave plate 21-3, wet Lars lead to prism 21-4, first silicon probe 21-5 and the second silicon probe B 21-6 carries out electro optic sampling detection, as shown in Figure 4.Here ito film 20 can be changed to High Resistivity Si sheet 22, as shown in Figure 5, after being filled with high purity oxygen gas, gas molecule can have certain absorption to THz wave, the Terahertz wave spectrum obtained there will be absorption peak compared to wave spectrum when existing without gas molecule, the absorption characteristics of gas molecule can be inferred from the absorption peak Terahertz wave spectrum, thus realize the absorption response of test THz wave under gas with various environment.
Described more piece vacuum pipe 11, by changing the quantity inserting more piece vacuum pipe, and selects the vacuum pipe of different length, thus changes the propagation distance of THz wave in vacuum pipe.
The described band 12 that heats is for a kind of metal wire, and being entangled in energising on vacuum pipe 10 can heat; Refrigerating plant 13 is attached on vacuum pipe 10 outer wall, and inner injection liquid nitrogen or liquid helium can realize refrigeration.
Described injecting gas can be any one high-pure gas, or the mixed gas of high-pure gas.
As high-purity oxygen, nitrogen.
Claims (5)
1. test the device that THz wave absorbs response under gas with various environment, it is characterized in that, comprise LASER Light Source, beam splitting chip, the first catoptron, time delay module, second catoptron, the 3rd catoptron, THz wave emission coefficient, Terahertz entrance window, Terahertz outlet window, vacuum pipe, more piece vacuum pipe, heats band, refrigerating plant, 4th catoptron, ito film, Terahertz wave spectrum detection system;
The ultra-short pulse laser exported from LASER Light Source is divided into two bundles via beam splitting chip, transmitted light beam is after the first catoptron reflection, by time delay module, then enter Terahertz wave spectrum detection system as THz wave detection light after the second catoptron, the 3rd catoptron and ito film; Another part beam splitting chip folded light beam enters THz wave emission coefficient, the THz wave giving off collimation is entered by Terahertz entrance window and is filled with in the vacuum pipe of gas, after THz wave and gas interaction of molecules, after the outgoing of Terahertz outlet window, by entering THz wave spectrum detection system after the 4th catoptron and ito film;
Vacuum pipe outer wall heats band and refrigerating plant, for controlling the real time temperature of vacuum pipe inside;
The total length of vacuum pipe regulates by inserting more piece vacuum pipe.
2. test the device that THz wave absorbs response under gas with various environment according to claim 1, it is characterized in that, also comprise pressure monitoring device, first valve, vacuum pump, the second valve, the first valve is had between vacuum pump and vacuum pipe, between vacuum pipe and gas injection apparatus, have the second valve, pressure detection means is connected on the pipeline between the first valve and the second valve, for detecting the pressure in vacuum pipe.
3. test the device that THz wave absorbs response under gas with various environment according to claim 1, it is characterized in that, described ito film can be replaced by high resistant silicon chip.
4. test the device that THz wave absorbs response under gas with various environment according to claim 1, it is characterized in that, described THz wave emission coefficient comprises condenser lens, frequency-doubling crystal BBO and Teflon lens successively, reflects laser condenser lens and frequency-doubling crystal BBO form air plasma, and the taper THz wave given off is by becoming the THz wave of collimation after Teflon lens.
5. test the device that THz wave absorbs response under gas with various environment according to claim 1, it is characterized in that, in described vacuum pipe, gas is any one high-pure gas, or the mixed gas of high-pure gas.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510640531.1A CN105158199B (en) | 2015-09-30 | 2015-09-30 | A kind of device tested THz wave and response is absorbed under gas with various environment |
| PCT/CN2016/000547 WO2017054367A1 (en) | 2015-09-30 | 2016-09-29 | Device for testing absorption response of terahertz waves in different gas environments |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510640531.1A CN105158199B (en) | 2015-09-30 | 2015-09-30 | A kind of device tested THz wave and response is absorbed under gas with various environment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105158199A true CN105158199A (en) | 2015-12-16 |
| CN105158199B CN105158199B (en) | 2018-03-13 |
Family
ID=54799134
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510640531.1A Active CN105158199B (en) | 2015-09-30 | 2015-09-30 | A kind of device tested THz wave and response is absorbed under gas with various environment |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN105158199B (en) |
| WO (1) | WO2017054367A1 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017054367A1 (en) * | 2015-09-30 | 2017-04-06 | 上海理工大学 | Device for testing absorption response of terahertz waves in different gas environments |
| WO2017156653A1 (en) * | 2016-03-15 | 2017-09-21 | 上海理工大学 | Remote hazardous gas detection device based on terahertz waves |
| CN108181261A (en) * | 2017-12-27 | 2018-06-19 | 上海理工大学 | Device based on terahertz time-domain spectroscopy detection mixed gas each component content |
| CN110132888A (en) * | 2019-04-30 | 2019-08-16 | 深圳市太赫兹科技创新研究院有限公司 | A kind of optical integrating-sphere and gaseous sample tera-hertz spectra acquisition device |
| CN111257952A (en) * | 2020-01-20 | 2020-06-09 | 广州燃气集团有限公司 | Underground pipeline identification system and method based on wave-absorbing material |
| CN113466166A (en) * | 2021-07-08 | 2021-10-01 | 清华大学 | Gas terahertz spectrum detection system |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112188715B (en) * | 2020-09-29 | 2022-09-06 | 北京环境特性研究所 | Plasma generating device and method |
| CN112924409B (en) * | 2021-01-14 | 2022-04-19 | 南京航空航天大学 | Device and method for measuring gas-solid two-phase concentration field based on terahertz wave |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101393116A (en) * | 2008-10-17 | 2009-03-25 | 天津理工大学 | Demarcating apparatus for gas concentration detector and linearity demarcating method |
| CN101539017A (en) * | 2008-03-17 | 2009-09-23 | 普拉德研究及开发股份有限公司 | Device and method for analyzing oil-water-gas by using terahertz radiation |
| CN203324174U (en) * | 2013-06-24 | 2013-12-04 | 中国石油大学(北京) | Multi-optical-path air chamber used in terahertz system |
| CN104390935A (en) * | 2014-12-10 | 2015-03-04 | 上海理工大学 | Device and method for testing nonlinear polarization coefficient and absorption coefficient at terahertz band |
| CN104457991A (en) * | 2014-12-10 | 2015-03-25 | 上海理工大学 | Method for detecting gas Rybderg state exquisite spectral line through Terahertz waves |
| CN104730026A (en) * | 2015-03-30 | 2015-06-24 | 上海理工大学 | Gas detection and identification sorting system based on terahertz waves |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090066948A1 (en) * | 2007-09-07 | 2009-03-12 | Hydroelectron Ventures, Inc. | Compact Terahertz Spectrometer Using Optical Beam Recycling and Heterodyne Detection |
| CN100526856C (en) * | 2007-11-01 | 2009-08-12 | 浙江大学 | Page quantitative determination device and methods based on terahertz time-domain spectroscopic technology |
| CN102882107B (en) * | 2012-10-22 | 2014-06-18 | 上海理工大学 | Method capable of adjusting polarization and intensity of terahertz wave rapidly and continuously |
| CN103259161B (en) * | 2013-04-21 | 2014-07-23 | 山东科技大学 | Cyclic air-exhausting method for obtaining high-purity terahertz working substance and optical maser |
| CN105158199B (en) * | 2015-09-30 | 2018-03-13 | 上海理工大学 | A kind of device tested THz wave and response is absorbed under gas with various environment |
-
2015
- 2015-09-30 CN CN201510640531.1A patent/CN105158199B/en active Active
-
2016
- 2016-09-29 WO PCT/CN2016/000547 patent/WO2017054367A1/en active Application Filing
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101539017A (en) * | 2008-03-17 | 2009-09-23 | 普拉德研究及开发股份有限公司 | Device and method for analyzing oil-water-gas by using terahertz radiation |
| CN101393116A (en) * | 2008-10-17 | 2009-03-25 | 天津理工大学 | Demarcating apparatus for gas concentration detector and linearity demarcating method |
| CN203324174U (en) * | 2013-06-24 | 2013-12-04 | 中国石油大学(北京) | Multi-optical-path air chamber used in terahertz system |
| CN104390935A (en) * | 2014-12-10 | 2015-03-04 | 上海理工大学 | Device and method for testing nonlinear polarization coefficient and absorption coefficient at terahertz band |
| CN104457991A (en) * | 2014-12-10 | 2015-03-25 | 上海理工大学 | Method for detecting gas Rybderg state exquisite spectral line through Terahertz waves |
| CN104730026A (en) * | 2015-03-30 | 2015-06-24 | 上海理工大学 | Gas detection and identification sorting system based on terahertz waves |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017054367A1 (en) * | 2015-09-30 | 2017-04-06 | 上海理工大学 | Device for testing absorption response of terahertz waves in different gas environments |
| WO2017156653A1 (en) * | 2016-03-15 | 2017-09-21 | 上海理工大学 | Remote hazardous gas detection device based on terahertz waves |
| CN108181261A (en) * | 2017-12-27 | 2018-06-19 | 上海理工大学 | Device based on terahertz time-domain spectroscopy detection mixed gas each component content |
| CN110132888A (en) * | 2019-04-30 | 2019-08-16 | 深圳市太赫兹科技创新研究院有限公司 | A kind of optical integrating-sphere and gaseous sample tera-hertz spectra acquisition device |
| CN111257952A (en) * | 2020-01-20 | 2020-06-09 | 广州燃气集团有限公司 | Underground pipeline identification system and method based on wave-absorbing material |
| CN113466166A (en) * | 2021-07-08 | 2021-10-01 | 清华大学 | Gas terahertz spectrum detection system |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2017054367A1 (en) | 2017-04-06 |
| CN105158199B (en) | 2018-03-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105158199A (en) | Device for testing absorption response of terahertz waves in different gas environments | |
| Jiang et al. | Multi-gas detection in power transformer oil based on tunable diode laser absorption spectrum | |
| CN104458634B (en) | Pulsed multi-channel photoacoustic spectrometry device for gas detection | |
| US6327896B1 (en) | Photo-acoustic leak detection system | |
| CN105784634A (en) | Terahertz time domain spectrograph capable of measuring transmission and reflection simultaneously under vertical incidence | |
| CN102305757B (en) | Device and method for measuring concentration of high-pressure combustion carbon black particles | |
| CN104568829B (en) | Gas detection system using fiber laser with function of active feedback compensation of reference cavity | |
| CN105841824B (en) | A kind of contactless portable real-time measurement device of temperatures | |
| CN104280362A (en) | Online high-temperature water vapor laser spectrum detection system | |
| CN103499545A (en) | Semiconductor laser gas detection system with function of gas reference cavity feedback compensation | |
| CN106802288A (en) | Gas-detecting device and method based on tunable laser and super continuous spectrums laser | |
| US11604142B2 (en) | Device for measuring a property of a measurement object by luminescence | |
| CN104181146A (en) | Multipulse laser-induced breakdown spectrum on-line detection system | |
| CN103884677A (en) | Gas analyzer sample gas chamber apparatus with characteristic of easy optical path adjustment | |
| US20180156715A1 (en) | Hollow fibre waveguide gas cells | |
| US8446587B2 (en) | Flash photolysis system | |
| CN103487392B (en) | Frequency domain cavity ring-down spectroscopy detection apparatus and method | |
| CN107305184A (en) | Laser detection system and method | |
| CN104849236A (en) | Gas concentration measuring equipment | |
| CN103940777A (en) | Portable infrared laser gas sensor for detection of decomposition components of SF6 | |
| CN109856078B (en) | Optical gas detection system | |
| CN106442379B (en) | The device backwards to laser far-distance detection dangerous goods based on THz wave | |
| CN208076389U (en) | A kind of terahertz light spectrometer | |
| CN102374970A (en) | Corrugated-pipe-shaped optical fiber gas sensing device | |
| CN206557091U (en) | Toxic and harmful gas on-line monitoring system based on TDLAS technologies |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |