CN105043559B - A kind of CARS spectrum temperature measuring devices based on bifocal lens - Google Patents
A kind of CARS spectrum temperature measuring devices based on bifocal lens Download PDFInfo
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- CN105043559B CN105043559B CN201510586168.XA CN201510586168A CN105043559B CN 105043559 B CN105043559 B CN 105043559B CN 201510586168 A CN201510586168 A CN 201510586168A CN 105043559 B CN105043559 B CN 105043559B
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Abstract
A kind of CARS spectrum temperature measuring devices based on bifocal lens, the present invention relates to CARS spectrum temperature measuring devices.The present invention is to solve common CARS devices when being measured to flame, using ordinary lens, the problem of temperature information of position can only be monitored.A kind of and CARS spectrum temperature measuring devices based on bifocal lens proposed.The device includes femto-second laser, first, second, third and fourth beam splitting chip, first, second, 3rd, 4th, 5th, 6th, 7th, 8th, 9th, 11st, 12nd, 13rd and the 14th speculum, optical parametric amplifier, first and second time delays devices, first and second bifocal lens, flame generating device, first and second diaphragms, first and second lens, first and second optical fiber coupling devices, first and second optical fiber, first and second spectrometers, first and second ccd array detectors and computer.The present invention is applied to CARS spectroscopic temperature measurements field.
Description
Technical field
The present invention relates to CARS spectrum temperature measuring devices, more particularly to a kind of CARS spectroscopic temperature measurements dress based on bifocal lens
Put.
Background technology
Coherent antistockes Raman spectroscopy (Coherent Anti-Stokes Raman Spectroscopy, referred to as
CARS it is) a kind of important nonlinear optical spectral technology in femtosecond scientific research, pump light and this is used as by the use of femto-second laser pulse
The Molecular Raman that the Raman vibration mould of lentor light collective effect excitation molecule and passage time delay detection optical detection are excited
The temporal evolution of mould is vibrated, it is ultrafast dynamic that the femtosecond CARS signals detected in experiment are not only able to the microcosmic molecule of reflection material
Mechanical process, and can reflect the macro-temperature information of molecule, therefore femtosecond CARS is the one kind for carrying out gas burning thermometric
Important means.
CARS spectrum are a kind of important methods for measuring flame temperature, have the letter of higher compared with traditional thermometric mode
Make an uproar ratio.Common CARS devices, using ordinary lens, can only produce a CARS when being measured to flame a position
Signal, so that the temperature information of a position can only be monitored.
The content of the invention
The purpose of the present invention is to solve common CARS devices when being measured to flame, using ordinary lens,
The problem of temperature information of position can only be monitored.A kind of and CARS spectrum temperature measuring devices based on bifocal lens proposed.
Above-mentioned goal of the invention is achieved through the following technical solutions：
Femto-second laser 1, the first beam splitting chip 2, the first speculum 3, the second speculum 4, the 3rd speculum 5, the second beam splitting
Piece 6, the 4th speculum 7, optical parametric amplifier, that is, OPA 8, first time deferred mount 9, the second time delays device 10,
Three beam splitting chips 11, the 5th speculum 12, the 6th speculum 13, the 4th beam splitting chip 14, the 7th speculum 15, the first bifocal lens
16th, flame generating device 17, the second bifocal lens 18, the first diaphragm 19, the 8th speculum 20, the 9th speculum 21, the second light
Late 22, the 11st speculum 23, the tenth two-mirror 24, the 13rd speculum 25, the 14th speculum 26, the first lens 27,
Second lens 28, the first optical fiber coupling device 29, the second optical fiber coupling device 30, the first optical fiber 31, the second optical fiber 32, the first light
Spectrometer 33, the second spectrometer 34, the first ccd array detector 35, the second ccd array detector 36 and computer 37；
The laser that femto-second laser 1 projects is divided into two-beam after the first beam splitting chip 2, and wherein light beam is anti-by first
Penetrate mirror 3 and reflex to the i.e. OPA 8 of optical parametric amplifier and enter first time deferred mount 9 and reflex to the by the 4th speculum 7
One bifocal lens 16；Another light beam reflexes to the 3rd speculum 5 by the second speculum 4；By the reflected light of the 3rd speculum 5
Line is divided into two-beam after the second beam splitting chip 6, and wherein light beam enters the second time delays device 10 and passes through the 3rd beam splitting chip
11 are divided into two-beam, and wherein light beam enters the first bifocal lens 16, and another light beam reflexes to first by the 5th speculum 12
Bifocal lens 16；The another light beam that second beam splitting chip 6 is divided into is divided into after the 7th speculum 15 reflexes to the 4th beam splitting chip 14
Two-beam wherein light beam enters the first bifocal lens 16, and another light beam reflexes to the first bifocal lens by the 6th speculum 13
16；Wherein, five light beams by the first bifocal lens 16 are parallel；
Five light beams focus on by the first bifocal lens at 2 points on the generation flame of flame generating device 17, in two point positions
Put and produce two CARS signals, wherein, two CARS signals are distinguished with red and Green Marker respectively；
Two CARS signals and five light beams pass through the second bifocal lens 18, be converted into directional light reach the first diaphragm 19,
On second diaphragm 22, the 8th speculum 20 and the 11st speculum 23；
Wherein, by the first diaphragm 19 and the second diaphragm 22 by two CARS signals select come；By the 8th speculum
20 light reflexes to the 9th speculum 21；The light of 9th speculum 21 reflexes to the tenth two-mirror 24；By the 12nd
The light of speculum 24 reflexes to the 13rd speculum 25, after the light of the 13rd speculum 25 reflexes to the first lens 27
Focus in the second optical fiber coupling device 30；After being input to by the first optical fiber 31 on the first spectrometer 33, by the first CCD gusts
After row detector 35, handled by computer 37；
The 14th speculum 26 is reflexed to by the light of the 11st speculum 23, by the light of the 14th speculum 26
Focused on after reflexing to the second lens 28 in the first optical fiber coupling device 29, by the second intelligent acess to the second spectrometer 34
Afterwards；After the second ccd array detector 36, handled by computer 37；
Wherein, first time deferred mount 9, the second time delays device 10, the first ccd array detector 35 and second
Ccd array detector 36 is connected with computer 37 respectively.
Invention effect
With the development of ultra-short pulse laser technology, the optical pulse laser of tens femtoseconds obtains in nonlinear optics
Extensive use so as to study the femtosecond coherent antistockes Raman spectroscopy technology of the macro-temperature information of material molecule become
May.Using the above-mentioned CARS spectrum investigating systems of tunable femto-second laser system building, can be used for surveying and drawing thermal-flame
Temperature Distribution, so as to promote people to deepen to the understanding of burning, for fully burning, improve engine etc. and have important meaning
Justice.The present invention provides a kind of CARS spectroscopic temperature measurements experimental provision based on bifocal lens and uses bifocal lens, realizes to fire
The monitoring of two position temperature informations of flame, present apparatus observable temperature scope are big：300K~2400K, high certainty of measurement, reaches 1%
~3%, single-point thermometric speed can reach 1KHz even 5KHz.And the CARS spectroscopic temperature measurements experimental provision based on bifocal lens is real
Now operate as follows：
1 builds light path as shown in Figure 1.
2 start laser, adjust the first time-delay mechanism and the second time-delay mechanism respectively to the optimum delay time.
3 the 3rd beam splitters, the 4th beam splitter, the 5th speculum, the 6th speculum and the first bifocal lens realize two
The output of CARS signals.
4 select two CARS signals using diaphragm.
CARS signals are coupled into optical fiber, through spectrometer and CCD, computer is passed to, flame two is obtained after data analysis
Position temperature information.
Brief description of the drawings
Fig. 1 is a kind of CARS spectrum temperature measuring device schematic diagrames based on bifocal lens that embodiment one proposes.
Embodiment
Embodiment one：A kind of CARS spectrum temperature measuring devices based on bifocal lens of present embodiment, are specifically
Prepared according to following steps：
Femto-second laser 1, the first beam splitting chip 2, the first speculum 3, the second speculum 4, the 3rd speculum 5, the second beam splitting
Piece 6, the 4th speculum 7, optical parametric amplifier, that is, OPA 8, first time deferred mount 9, the second time delays device 10,
Three beam splitting chips 11, the 5th speculum 12, the 6th speculum 13, the 4th beam splitting chip 14, the 7th speculum 15, the first bifocal lens
16th, flame generating device 17, the second bifocal lens 18, the first diaphragm 19, the 8th speculum 20, the 9th speculum 21, the second light
Late 22, the 11st speculum 23, the tenth two-mirror 24, the 13rd speculum 25, the 14th speculum 26, the first lens 27,
Second lens 28, the first optical fiber coupling device 29, the second optical fiber coupling device 30, the first optical fiber 31, the second optical fiber 32, the first light
Spectrometer 33, the second spectrometer 34, the first ccd array detector 35, the second ccd array detector 36 and computer 37；
The laser that femto-second laser 1 projects is divided into two-beam after the first beam splitting chip 2, and wherein light beam is anti-by first
Penetrate mirror 3 and reflex to the i.e. OPA 8 of optical parametric amplifier and enter first time deferred mount 9 and reflex to the by the 4th speculum 7
One bifocal lens 16；Another light beam reflexes to the 3rd speculum 5 by the second speculum 4；By the reflected light of the 3rd speculum 5
Line is divided into two-beam after the second beam splitting chip 6, and wherein light beam enters the second time delays device 10 and passes through the 3rd beam splitting chip
11 are divided into two-beam, and wherein light beam enters the first bifocal lens 16, and another light beam reflexes to first by the 5th speculum 12
Bifocal lens 16；The another light beam that second beam splitting chip 6 is divided into is divided into after the 7th speculum 15 reflexes to the 4th beam splitting chip 14
Two-beam wherein light beam enters the first bifocal lens 16, and another light beam reflexes to the first bifocal lens by the 6th speculum 13
16；Wherein, five light beams by the first bifocal lens 16 are parallel；
Five light beams focus on by the first bifocal lens at 2 points on the generation flame of flame generating device 17, in two point positions
Put and produce two CARS signals, wherein, two CARS signals are distinguished with red and Green Marker respectively；
Two CARS signals and five light beams pass through the second bifocal lens 18, be converted into directional light reach the first diaphragm 19,
On second diaphragm 22, the 8th speculum 20 and the 11st speculum 23；
Wherein, by the first diaphragm 19 and the second diaphragm 22 by two CARS signals select come；By the 8th speculum
20 light reflexes to the 9th speculum 21；The light of 9th speculum 21 reflexes to the tenth two-mirror 24；By the 12nd
The light of speculum 24 reflexes to the 13rd speculum 25, after the light of the 13rd speculum 25 reflexes to the first lens 27
Focus in the second optical fiber coupling device 30；After being input to by the first optical fiber 31 on the first spectrometer 33, by the first CCD gusts
After row detector 35, handled by computer 37, the measurement tested；
The 14th speculum 26 is reflexed to by the light of the 11st speculum 23, by the light of the 14th speculum 26
Focused on after reflexing to the second lens 28 in the first optical fiber coupling device 29, by the second intelligent acess to the second spectrometer 34
Afterwards；After the second ccd array detector 36, handled by computer 37, the measurement tested；
Wherein, first time deferred mount 9, the second time delays device 10, the first ccd array detector 35 and second
Ccd array detector 36 is connected with computer 37 respectively.
Present embodiment effect：
With the development of ultra-short pulse laser technology, the optical pulse laser of tens femtoseconds obtains in nonlinear optics
Extensive use so as to study the femtosecond coherent antistockes Raman spectroscopy technology of the macro-temperature information of material molecule become
May.Using the above-mentioned CARS spectrum investigating systems of tunable femto-second laser system building, can be used for surveying and drawing thermal-flame
Temperature Distribution, so as to promote people to deepen to the understanding of burning, for fully burning, improve engine etc. and have important meaning
Justice.Present embodiment provides a kind of CARS spectroscopic temperature measurements experimental provision based on bifocal lens and uses bifocal lens, realizes
Monitoring to two position temperature informations of flame.Present apparatus observable temperature scope is big：300K~2400K, high certainty of measurement, reaches
1%~3%, single-point thermometric speed can reach 1KHz even 5KHz.And the CARS spectroscopic temperature measurements experiment dress based on bifocal lens
It is as follows to put realization operation：
1 builds light path as shown in Figure 1.
2 start laser, adjust the first time-delay mechanism and the second time-delay mechanism respectively to the optimum delay time.
3 the 3rd beam splitters, the 4th beam splitter, the 5th speculum, the 6th speculum and the first bifocal lens realize two
The output of CARS signals.
4 select two CARS signals using diaphragm.
CARS signals are coupled into optical fiber, through spectrometer and CCD, computer is passed to, flame two is obtained after data analysis
Position temperature information.
Embodiment two：The present embodiment is different from the first embodiment in that：First bifocal lens
16 and second bifocal lens 18 setting is arranged in order on same central axes.Other steps and parameter and one phase of embodiment
Together.
Embodiment three：The present embodiment is different from the first and the second embodiment in that：The femtosecond laser
Device 1 projects the laser vertical with central axes, laser by the first beam splitting chip 2 be divided into axis parallel and vertical two-beam,
And injection and central axes angle are in 45 ° of the first speculum 3 and the second speculum 4 respectively；
What the first beam splitting chip 2 was divided into reflexes to optical parameter amplification with the light beam of axis parallel by the first speculum 3
Device, that is, OPA 8 enters first time deferred mount 9 and reflexes to the first bifocal lens 16 by the 4th speculum 7；
The light beam vertical with central axes that first beam splitting chip 2 is divided into reflexes to the 3rd speculum 5 by the second speculum 4；
It is divided into and axis parallel and vertical two-beam after the reflection light of the 3rd speculum 5 injects the second beam splitting chip 6.It is other
Step and parameter are the same as one or two specific embodiments.
Embodiment four：Unlike one of present embodiment and embodiment one to three：Described second
What beam splitting chip 6 was divided into enter the second time delays device 10 with central axes normal beam is divided into and axis by the 3rd beam splitting chip 11
The parallel and vertical two-beam of line；
Second beam splitting chip 6 be divided into axis parallel light beam after the 7th speculum 15 reflexes to the 4th beam splitting chip 14
It is divided into and axis parallel and vertical two-beam.Other steps and parameter are identical with one of embodiment one to three.
Embodiment five：Unlike one of present embodiment and embodiment one to four：Described the 3rd
What beam splitting chip 11 was divided into enters the first bifocal lens 16 with axis parallel light beam, and what the 3rd beam splitting chip 11 was divided into hangs down with central axes
Straight light beam reflexes to the first bifocal lens 16 by the 5th speculum 12；
What the 4th beam splitting chip 14 was divided into enters the first bifocal lens 16 with axis parallel light beam, and the 4th beam splitting chip 14 is divided into
The light beam vertical with central axes reflex to the first bifocal lens 16 by the 6th speculum 13.Other steps and parameter with it is specific
One of embodiment one to four is identical.
Embodiment six：Unlike one of present embodiment and embodiment one to five：The femtosecond
Laser 1 is titanium-doped sapphire femto-second laser.Other steps and parameter are identical with one of embodiment one to five.
Embodiment seven：Unlike one of present embodiment and embodiment one to six：Described mixes titanium
Sapphire femto-second laser output pulse width about 40fs, centre wavelength 800nm.Other steps and parameter and embodiment one to
One of six is identical.
Embodiment eight：Unlike one of present embodiment and embodiment one to seven：The optics
Parameter amplifier, that is, OPA 8, selects the SHS configurations in TOPAS-800-fs-VIS.Other steps and parameter and specific embodiment party
One of formula one to seven is identical.
Embodiment nine：Unlike one of present embodiment and embodiment one to eight：Described first
33 and second spectrometer 34 of spectrometer can detect 200- using the HR4000CG-CN-NIR model spectrometers of Ocean productions
The signal of 1100nm wave-length coverages.Other steps and parameter are identical with one of embodiment one to eight.
Embodiment ten：Unlike one of present embodiment and embodiment one to nine：10th, according to right
A kind of it is required that CARS spectrum temperature measuring devices based on bifocal lens described in 9, it is characterised in that the first ccd array detection
The TCD1304AP linear CCD arrays that 35 and second ccd array detector 36 of device is produced using Toshiba.Other steps and
Parameter is identical with one of embodiment one to nine.
Operation principle：
1st, light path as shown in the figure is built.
2nd, laser is started, the laser of femto-second laser outgoing, is divided into two beams, wherein a branch of pass through beam splitting by beam splitting chip
Mirror and the first speculum are reflexed to up to optical parametric amplifier, and in the case where ensureing certain power output, that realizes wavelength can
Tuning, afterwards into first time deferred mount, by by reflexing to up to the first bifocal lens；Another beam is by reflexing to up to the
Two beam splitting chips, are divided into two beams, wherein it is a branch of by reflection and beam splitting, two beams are again divided into, two-beam is reached by reflexing to
First bifocal lens, another beam pass through the second time delays device, reach the 3rd beam splitting chip, are divided into two beams, the reflection of this two beam
Reach the first bifocal lens.Five light beams are subject to the focussing force of the first bifocal lens, focus on two of flame radially respectively
Point, while two CARS signals are produced two positions, distinguished respectively with red and Green Marker.Two beam CARS signals and five beams
Light beam passes through the second bifocal lens, is converted into directional light, and two beam CARS signals are selected come respectively by repeatedly anti-by diaphragm
Penetrate, reach lens, so as to be focused onto in optical fiber coupling device, by intelligent acess to spectrometer, after array CCD, by
Computer is handled, the measurement tested.
Beneficial effects of the present invention are verified using following embodiments：
Embodiment one：
A kind of CARS spectrum temperature measuring devices based on bifocal lens of the present embodiment, specifically prepare according to following steps：
First bifocal lens 16 and the second bifocal lens 18 are arranged in order setting, flame generating device on same central axes
17 occur between the first bifocal lens 16 and the second bifocal lens 18 and by 16 light of the first bifocal lens by flame
On the flame that device 17 occurs；
Femto-second laser 1 projects the laser vertical with central axes, and laser is divided into by the first beam splitting chip 2 and axis parallel
With vertical two-beam, and it is in 45 ° of the first speculum 3 and the second speculum 4 to inject respectively with central axes angle；
What the first beam splitting chip 2 was divided into reflexes to optical parameter amplification with the light beam of axis parallel by the first speculum 3
Device, that is, OPA 8 enters first time deferred mount 9 and reflexes to the first bifocal lens 16 by the 4th speculum 7；
The light beam vertical with central axes that first beam splitting chip 2 is divided into reflexes to the 3rd speculum 5 by the second speculum 4；
It is divided into and axis parallel and vertical two-beam into after crossing the second beam splitting chip 6 by the reflection light of the 3rd speculum 5；
Wherein, what the second beam splitting chip 6 was divided into enters the second time delays device 10 by the 3rd with central axes normal beam
Beam splitting chip 11 be divided into axis parallel and vertical two-beam, wherein the 3rd beam splitting chip 11 be divided into axis parallel light beam
Into the first bifocal lens 16, the light beam vertical with central axes that the 3rd beam splitting chip 11 is divided into is reflexed to by the 5th speculum 12
First bifocal lens 16；
Second beam splitting chip 6 be divided into axis parallel light beam after the 7th speculum 15 reflexes to the 4th beam splitting chip 14
It is divided into and axis parallel and vertical two-beam；Wherein, what the 4th beam splitting chip 14 was divided into enters the with axis parallel light beam
One bifocal lens 16, the light beam vertical with central axes that the 4th beam splitting chip 14 is divided into reflex to first pair by the 6th speculum 13
Focus lens 16；Wherein, five light beams by the first bifocal lens 16 are parallel；
Five light beams focus on by the first bifocal lens at 2 points on the generation flame of flame generating device 17, in two point positions
Put and produce two CARS signals, wherein, two CARS signals are distinguished with red and Green Marker respectively；
Two CARS signals and five light beams pass through the second bifocal lens 18, be converted into directional light reach the first diaphragm 19,
On second diaphragm 22, the 8th speculum 20 and the 11st speculum 23；First diaphragm 19 and the second diaphragm 22 respectively with central axes
Vertically；
Wherein, by the first diaphragm 19 and the second diaphragm 22 by two CARS signals select come；8th speculum 20
The reflection light vertical with central axes reflexes to the 9th speculum 21；The reflection light with axis parallel of 9th speculum 21
Reflex to the tenth two-mirror 24；It is anti-that the 13rd is reflexed to by the reflection light vertical with central axes of the tenth two-mirror 24
Penetrate the 25, the 13rd speculum 25 of mirror and axis parallel reflection light reflex to the first lens 27 after focus on the second optical fiber coupling
In clutch part 30；After being input to by the first optical fiber 31 on the first spectrometer 33, after the first ccd array detector 35, by
Computer 37 is handled, the measurement tested；
The reflection light vertical with central axes of 11st speculum 23 reflexes to the 14th speculum 26, the 14th reflection
Being reflexed to the reflection light of axis parallel after the second lens 28 for mirror 26 is focused in the first optical fiber coupling device 29, is passed through
After on second intelligent acess to the second spectrometer 34；After the second ccd array detector 36, handled by computer 37,
The measurement tested；
The present invention can also have other various embodiments, in the case of without departing substantially from spirit of the invention and its essence, this area
Technical staff makes various corresponding changes and deformation in accordance with the present invention, but these corresponding changes and deformation should all belong to
The protection domain of appended claims of the invention.
Claims (10)
1. a kind of CARS spectrum temperature measuring devices based on bifocal lens, it is characterised in that described device includes：
Femto-second laser (1), the first beam splitting chip (2), the first speculum (3), the second speculum (4), the 3rd speculum (5),
Two beam splitting chips (6), the 4th speculum (7), optical parametric amplifier, that is, OPA (8), first time deferred mount (9), the second time
Time-delay mechanism (10), the 3rd beam splitting chip (11), the 5th speculum (12), the 6th speculum (13), the 4th beam splitting chip (14), the 7th
Speculum (15), the first bifocal lens (16), flame generating device (17), the second bifocal lens (18), the first diaphragm (19),
Eight speculums (20), the 9th speculum (21), the second diaphragm (22), the 11st speculum (23), the tenth two-mirror (24),
13 speculums (25), the 14th speculum (26), the first lens (27), the second lens (28), the first optical fiber coupling device
(29), the second optical fiber coupling device (30), the first optical fiber (31), the second optical fiber (32), the first spectrometer (33), the second spectrometer
(34), the first ccd array detector (35), the second ccd array detector (36) and computer (37)；
The laser that femto-second laser (1) projects is divided into two-beam after the first beam splitting chip (2), and wherein light beam is anti-by first
Penetrating mirror (3), to reflex to optical parametric amplifier i.e. OPA (8) anti-by the 4th speculum (7) into first time deferred mount (9)
It is mapped to the first bifocal lens (16)；Another light beam reflexes to the 3rd speculum (5) by the second speculum (4)；It is anti-by the 3rd
The reflection light for penetrating mirror (5) is divided into two-beam after the second beam splitting chip (6), and wherein light beam enters the second time delays device
(10) it is divided into two-beam by the 3rd beam splitting chip (11), wherein light beam enters the first bifocal lens (16), and another light beam passes through
5th speculum (12) reflexes to the first bifocal lens (16)；The another light beam that second beam splitting chip (6) is divided into is by the 7th reflection
Mirror (15), which is reflexed to after the 4th beam splitting chip (14), to be divided into two-beam wherein light beam and enters the first bifocal lens (16), another light beam
The first bifocal lens (16) is reflexed to by the 6th speculum (13)；Wherein, by five light beams of the first bifocal lens (16)
It is parallel；
Five light beams focus on by the first bifocal lens at 2 points on flame generating device (17) generation flame, 2 positions
Two CARS signals of upper generation, wherein, two CARS signals are distinguished with red and Green Marker respectively；
Two CARS signals and five light beams pass through the second bifocal lens (18), be converted into directional light reach the first diaphragm (19),
On second diaphragm (22), the 8th speculum (20) and the 11st speculum (23)；
Wherein, by the first diaphragm (19) and the second diaphragm (22) by two CARS signals select come；By the 8th speculum
(20) light reflexes to the 9th speculum (21)；The light of 9th speculum (21) reflexes to the tenth two-mirror (24)；Through
The light for crossing the tenth two-mirror (24) reflexes to the 13rd speculum (25), is reflected by the light of the 13rd speculum (25)
Focused on after to the first lens (27) in the second optical fiber coupling device (30)；First spectrometer is input to by the first optical fiber (31)
(33) after on, after the first ccd array detector (35), handled by computer (37)；
The 14th speculum (26) is reflexed to by the light of the 11st speculum (23), by the light of the 14th speculum (26)
Line reflection passes through the second intelligent acess to the second spectrum to focusing in the first optical fiber coupling device (29) after the second lens (28)
After on instrument (34)；After the second ccd array detector (36), handled by computer (37)；
Wherein, first time deferred mount (9), the second time delays device (10), the first ccd array detector (35) and second
Ccd array detector (36) is connected with computer (37) respectively.
2. a kind of CARS spectrum temperature measuring devices based on bifocal lens according to claim 1, it is characterised in that described
First bifocal lens (16) is arranged in order setting with the second bifocal lens (18) on same central axes.
3. a kind of CARS spectrum temperature measuring devices based on bifocal lens according to claim 2, it is characterised in that described
Femto-second laser (1) projects the laser vertical with central axes, and laser is divided into and axis parallel and vertical by the first beam splitting chip (2)
Straight two-beam, and injection and central axes angle are in 45 ° of the first speculum (3) and the second speculum (4) respectively；
What the first beam splitting chip (2) was divided into reflexes to optical parameter amplification with the light beam of axis parallel by the first speculum (3)
Device, that is, OPA (8) reflexes to the first bifocal lens (16) into first time deferred mount (9) by the 4th speculum (7)；
The light beam vertical with central axes that first beam splitting chip (2) is divided into reflexes to the 3rd speculum by the second speculum (4)
(5)；It is divided into and axis parallel and vertical two after the reflection light of the 3rd speculum (5) injects the second beam splitting chip (6)
Shu Guang.
4. a kind of CARS spectrum temperature measuring devices based on bifocal lens according to claim 3, it is characterised in that described
What the second beam splitting chip (6) was divided into passes through the 3rd beam splitting chip (11) with central axes normal beam into the second time delays device (10)
It is divided into and axis parallel and vertical two-beam；
What the second beam splitting chip (6) was divided into reflexes to the 4th beam splitting chip (14) with axis parallel light beam by the 7th speculum (15)
It is divided into afterwards and axis parallel and vertical two-beam.
5. a kind of CARS spectrum temperature measuring devices based on bifocal lens according to claim 4, it is characterised in that described
What the 3rd beam splitting chip (11) was divided into enters the first bifocal lens (16) with axis parallel light beam, what the 3rd beam splitting chip (11) was divided into
The light beam vertical with central axes reflexes to the first bifocal lens (16) by the 5th speculum (12)；
What the 4th beam splitting chip (14) was divided into enters the first bifocal lens (16), the 4th beam splitting chip (14) point with axis parallel light beam
Into the light beam vertical with central axes reflex to the first bifocal lens (16) by the 6th speculum (13).
6. a kind of CARS spectrum temperature measuring devices based on bifocal lens according to claim 5, it is characterised in that described
Femto-second laser (1) is titanium-doped sapphire femto-second laser.
7. a kind of CARS spectrum temperature measuring devices based on bifocal lens according to claim 6, it is characterised in that described
Titanium-doped sapphire femto-second laser output pulse width about 40fs, centre wavelength 800nm.
8. a kind of CARS spectrum temperature measuring devices based on bifocal lens according to claim 7, it is characterised in that described
Optical parametric amplifier, that is, OPA (8), selects the SHS configurations in TOPAS-800-fs-VIS.
9. a kind of CARS spectrum temperature measuring devices based on bifocal lens according to claim 8, it is characterised in that described
First spectrometer (33) and the second spectrometer (34) use the HR4000CG-CN-NIR model spectrometers of Ocean productions, can detect
The signal of 200-1100nm wave-length coverages.
10. a kind of CARS spectrum temperature measuring devices based on bifocal lens according to claim 9, it is characterised in that described
The TCD1304AP lines that first ccd array detector (35) and the second ccd array detector (36) are produced using Toshiba
Property ccd array.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510586168.XA CN105043559B (en) | 2015-09-15 | 2015-09-15 | A kind of CARS spectrum temperature measuring devices based on bifocal lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510586168.XA CN105043559B (en) | 2015-09-15 | 2015-09-15 | A kind of CARS spectrum temperature measuring devices based on bifocal lens |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105043559A CN105043559A (en) | 2015-11-11 |
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| CN109856112B (en) * | 2017-11-30 | 2020-05-22 | 中国科学院大连化学物理研究所 | CARS-based tomography imaging device, detection system and method |
| CN109030457B (en) * | 2018-09-20 | 2021-02-09 | 北京空间机电研究所 | Double-element common-matrix Raman probe |
| CN112747837B (en) * | 2020-12-23 | 2021-10-29 | 华中科技大学 | Femtosecond CARS system for measuring gas phase temperature in MOCVD reaction cavity in real time |
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| CN101819064A (en) * | 2010-05-11 | 2010-09-01 | 哈尔滨工业大学 | Normal-temperature normal-pressure femto-second CARS (Coherent Anti-stokes Raman Spectroscopy) time-resolved spectrum measuring system |
| CN103076107A (en) * | 2013-01-17 | 2013-05-01 | 杭州电子科技大学 | Terahertz pulse measurement-based burning temperature sensing device and method |
| CN104236711A (en) * | 2014-09-29 | 2014-12-24 | 哈尔滨工业大学 | Femtosecond CARS (coherent anti-stokes Raman scattering) three-dimensional spectral detection system and method for study on molecular superfast dynamics |
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| CN101819064A (en) * | 2010-05-11 | 2010-09-01 | 哈尔滨工业大学 | Normal-temperature normal-pressure femto-second CARS (Coherent Anti-stokes Raman Spectroscopy) time-resolved spectrum measuring system |
| CN103076107A (en) * | 2013-01-17 | 2013-05-01 | 杭州电子科技大学 | Terahertz pulse measurement-based burning temperature sensing device and method |
| CN104236711A (en) * | 2014-09-29 | 2014-12-24 | 哈尔滨工业大学 | Femtosecond CARS (coherent anti-stokes Raman scattering) three-dimensional spectral detection system and method for study on molecular superfast dynamics |
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| 飞秒 CARS 在燃烧测温中的应用研究;李金钊;《中国优秀硕士学位论文全文数据库基础科学辑》;20140315;全文 * |
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