CN105953930A - Picosecond-level narrow pulse width testing device - Google Patents
Picosecond-level narrow pulse width testing device Download PDFInfo
- Publication number
- CN105953930A CN105953930A CN201610309365.1A CN201610309365A CN105953930A CN 105953930 A CN105953930 A CN 105953930A CN 201610309365 A CN201610309365 A CN 201610309365A CN 105953930 A CN105953930 A CN 105953930A
- Authority
- CN
- China
- Prior art keywords
- light
- fiber amplifier
- regulating platform
- measurement apparatus
- splitting coupler
- 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 48
- 238000005259 measurement Methods 0.000 claims abstract description 71
- 238000001069 Raman spectroscopy Methods 0.000 claims abstract description 36
- 239000013307 optical fiber Substances 0.000 claims abstract description 23
- 230000001105 regulatory effect Effects 0.000 claims description 72
- 239000000835 fiber Substances 0.000 claims description 71
- 230000005540 biological transmission Effects 0.000 claims description 17
- 238000012384 transportation and delivery Methods 0.000 claims description 14
- 238000001514 detection method Methods 0.000 claims description 10
- 230000008878 coupling Effects 0.000 claims description 7
- 238000010168 coupling process Methods 0.000 claims description 7
- 238000005859 coupling reaction Methods 0.000 claims description 7
- 230000003287 optical effect Effects 0.000 abstract description 8
- 230000000007 visual effect Effects 0.000 abstract description 3
- 238000012545 processing Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
- 230000008859 change Effects 0.000 description 4
- 238000005311 autocorrelation function Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000003321 amplification Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000003199 nucleic acid amplification method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000003913 materials processing Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- -1 quasiconductor Substances 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 238000005482 strain hardening Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J11/00—Measuring the characteristics of individual optical pulses or of optical pulse trains
Abstract
The invention relates to a picosecond-level narrow pulse width testing device, which comprises a first light-splitting coupler, a second light-splitting coupler, a third light-splitting coupler, a first optical adjustment table, a second optical adjustment table, a first optical fiber amplifier, a second optical fiber amplifier, a beam combination device, a first measurement device, a second measurement device and a third measurement device, and is characterized in that the first light-splitting coupler is connected with the first optical adjustment table and the second optical adjustment table, the first optical adjustment table, the first optical amplifier and the second light-splitting coupler are sequentially connected, and the second light-splitting coupler is connected with the first measurement device and the beam combination device; and the second optical adjustment table, the second optical fiber amplifier and the third light-splitting coupler are sequentially connected, the third light-splitting coupler is connected with the second measurement device and the beam combination device, and the beam combination device is connected with the third measurement device. The narrow pulse width testing device measures picosecond-level pulses by using a stimulated Raman scattering principle, is visual in structure, simple in operation and low in cost, and reduces the test cost of the picosecond-level narrow pulse width.
Description
Technical field
The present invention relates to laser technology field, particularly relate to a kind of picosecond narrow spaces test device.
Background technology
Along with the development of science and technology, picosecond laser technology achieves the progress attracted people's attention so that it is become
Reliable tools for industry microfabrication.Ps pulse width is extremely short, suitable with the electric light relaxation time, and
And picopulse often has the highest peak power, it is enable to utilize man-hour peak value by material list adding
Face is hit into ionic state and is completed to process and the least to the heat effect around processing stand, and this characteristic is i.e. so-called
" cold working " and micro Process, be that the laser instrument of nanosecond cannot realize.Picosecond laser is adapted to several
The micro-dimension processing of all material, including metal, quasiconductor, gem, pottery, polymer etc..
Due to the picosecond laser extensive application in materials processing, develop and use the mechanism of picosecond laser
More and more, the most increasing to the testing requirement of picosecond narrow spaces.Traditional psec rank narrow spaces
Test device it is generally required to use the photodetector of autocorrelation function analyzer or high-speed response to add high-speed oscilloscope, this
Two kinds of method of testings are the highest to equipment requirements, and autocorrelation function analyzer needs hundreds of thousands unit, on high-speed oscilloscope needs
The high purchasing price of million yuan, considerably increases testing cost.
Summary of the invention
Based on this, it is necessary to for the problems referred to above, it is provided that a kind of picosecond narrow spaces reducing testing cost
Test device.
A kind of picosecond narrow spaces test device, including the first light splitting coupler, the second light splitting coupler, the
Three light splitting couplers, the first optics regulating platform, the second optics regulating platform, the first fiber amplifier, the second light
Fiber amplifier, beam merging apparatus, the first measurement apparatus, the second measurement apparatus and the 3rd measurement apparatus, described
One light splitting coupler connects described first optics regulating platform and described second optics regulating platform；Described first optics
Regulating platform, the first fiber amplifier and described second light splitting coupler are sequentially connected with, described second light splitting coupling
Device connects described first measurement apparatus and described beam merging apparatus；Described second optics regulating platform, described second light
Fiber amplifier and described 3rd light splitting coupler are sequentially connected with, and described 3rd light splitting coupler connects described second
Measurement apparatus and described beam merging apparatus；Described beam merging apparatus connects described 3rd measurement apparatus；
Described first light splitting coupler receives psec light to be measured, after described psec light to be measured is divided into two-way light beam
It is delivered to described first optics regulating platform and described second optics regulating platform, described first optics regulating platform respectively
The light beam received is transmitted to described second light splitting coupler, described second light through described first fiber amplifier
Learn regulating platform to be transmitted to described 3rd light splitting coupler through described second fiber amplifier by the light beam received；Institute
State and after the light beam of reception is divided into two-way by the second light splitting coupler, be transmitted separately to described first measurement apparatus and institute
Stating beam merging apparatus, described 3rd light splitting coupler is transmitted separately to described after the light beam of reception is divided into two-way
Two measurement apparatus and described beam merging apparatus；The two-way beam Propagation the extremely the described 3rd that described beam merging apparatus will receive
Measurement apparatus；
Described first fiber amplifier and described second fiber amplifier are respectively used to be amplified to the light beam of transmission
Produce the critical point of stimulated Raman scattering；Described first measurement apparatus and described second measurement apparatus are respectively used to
The stimulated Raman scattering light of the corresponding light beam of detection；
Described first optics regulating platform and described second optics regulating platform at described first fiber amplifier and
After the light beam of transmission is amplified to the critical point of generation stimulated Raman scattering by described second fiber amplifier, adjust
Path length difference between the light beam of joint transmission；Described 3rd measurement apparatus at described first optics regulating platform and
When described second optics regulating platform regulates the path length difference between the light beam of transmission, the two-way light beam that detection accesses is folded
Add initial time and the finish time producing stimulated Raman scattering light, obtain pulsewidth test result and show.
Above-mentioned picosecond narrow spaces test device, the first fiber amplifier and the second fiber amplifier will pass respectively
Defeated light beam is amplified to produce the critical point of stimulated Raman scattering, and the first measurement apparatus and the second measurement apparatus are divided
Jian Ce the stimulated Raman scattering light of corresponding light beam.First optics regulating platform and the second optics regulating platform are first
The light beam of transmission is amplified to produce the critical point of stimulated Raman scattering by fiber amplifier and the second fiber amplifier
Afterwards, the path length difference between the light beam of regulation transmission.The two-way beam combination that 3rd measurement apparatus detection accesses
Produce initial time and the finish time of stimulated Raman scattering light, obtain pulsewidth test result and show.Utilize
Stimulated Raman scattering principle measures picosecond pulse, structural visual, simple to operate and low cost, reduces
The testing cost of picosecond narrow spaces.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of picosecond narrow spaces test device in an embodiment；
Fig. 2 is the principle schematic of picosecond narrow spaces test in an embodiment；
Fig. 3 is the structure chart of the first fiber amplifier in an embodiment.
Detailed description of the invention
A kind of picosecond narrow spaces test device, as it is shown in figure 1, include the first light splitting coupler 102, second
Light splitting coupler the 104, the 3rd light splitting coupler the 106, first optics regulating platform the 108, second optics regulating platform
110, first fiber amplifier the 112, second fiber amplifier 114, beam merging apparatus the 116, first measurement apparatus
118, the second measurement apparatus 120 and the 3rd measurement apparatus 122.First light splitting coupler 102 connects the first light
Learning regulating platform 108 and the second optics regulating platform 110, the first light splitting coupler 102 also can connect psec light to be measured
Source 300, receives the psec light to be measured of psec light source 300 to be measured output.First optics regulating platform 108, first
Fiber amplifier 112 and the second light splitting coupler 104 are sequentially connected with, and the second light splitting coupler 104 connects
One measurement apparatus 118 and beam merging apparatus 116.Second optics regulating platform the 110, second fiber amplifier 114 and
3rd light splitting coupler 106 is sequentially connected with, and the 3rd light splitting coupler 106 connects the second measurement apparatus 120 He
Beam merging apparatus 116, beam merging apparatus 116 connects the 3rd measurement apparatus 122.Specifically, the first light splitting coupler
102, second light splitting coupler the 104, the 3rd light splitting coupler the 106, first optics regulating platform the 108, second light
Learn regulating platform the 110, first fiber amplifier the 112, second fiber amplifier 114, beam merging apparatus 116, first
All can be connected by optical fiber between measurement apparatus the 118, second measurement apparatus 120 and the 3rd measurement apparatus 122.
First light splitting coupler 102 receives psec light to be measured, and psec light to be measured is divided into difference after two-way light beam
Being delivered to the first optics regulating platform 108 and the second optics regulating platform 110, the first optics regulating platform 108 will receive
Light beam transmit to the second light splitting coupler 104, the second optics regulating platform 110 through the first fiber amplifier 112
The light beam of reception is transmitted to the 3rd light splitting coupler 106 through the second fiber amplifier 114.Second light splitting coupling
Device 104 is transmitted separately to the first measurement apparatus 118 and beam merging apparatus 116 after the light beam of reception is divided into two-way,
3rd light splitting coupler 106 is transmitted separately to the second measurement apparatus 120 He after the light beam of reception is divided into two-way
Beam merging apparatus 116.Beam merging apparatus 116 by receive two-way beam Propagation to the 3rd measurement apparatus 122.
First fiber amplifier 112 and the second fiber amplifier 114 are respectively used to be amplified to the light beam of transmission
Produce the critical point of stimulated Raman scattering.First measurement apparatus 118 and the second measurement apparatus 120 are respectively used to
The stimulated Raman scattering light of the corresponding light beam of detection.
First optics regulating platform 108 and the second optics regulating platform 110 are for the first fiber amplifier 112 He
After the light beam of transmission is amplified to the critical point of generation stimulated Raman scattering by the second fiber amplifier 114, adjust
Path length difference between the light beam of joint transmission.3rd measurement apparatus 122 is for the first optics regulating platform 108 He
When second optics regulating platform 110 regulates the path length difference between the light beam of transmission, the two-way light beam that detection accesses is folded
Add initial time and the finish time producing stimulated Raman scattering light, obtain pulsewidth test result and show.
First optics regulating platform the 108, first fiber amplifier 112 and the second light splitting coupler 104 form first
Branch road, second optics regulating platform the 110, second fiber amplifier 114 and the 3rd light splitting coupler 106 form
Two branch roads.Psec light to be measured is divided into two-way light beam by the first light splitting coupler 102, respectively through the first branch road
It is again divided into two-way output with after the second branch road transmission.First light splitting coupler the 102, second light splitting coupler
104 and the 3rd light splitting coupler 106 be used as carrying out light-splitting processing, light beam is divided into after two-way and exporting, specifically
Splitting ratio the most unique.In the present embodiment, the splitting ratio of the first light splitting coupler 102 is 50%, will treat
Survey after psec light is divided into the light beam that two-way is equal and export, in order to follow-up test is observed, and improves test convenience.
The splitting ratio of the second light splitting coupler 104 and the 3rd light splitting coupler 106 is 1:999, respectively by the thousand of light beam
/ part sends to the first corresponding measurement apparatus 118 and the second measurement apparatus 120.Specifically, second
Light splitting coupler 104 carries out light-splitting processing to the light beam received, and sends 1/1000 part of light beam to first
Measurement apparatus 118 is used as to test, and 999/1000 part of light beam is accessed beam merging apparatus 116.3rd
Light splitting coupler 106 carries out light-splitting processing to the light beam received, and sends 1/1000 part of light beam to second
Measurement apparatus 120 is used as to test, and 999/1000 part of light beam is accessed beam merging apparatus 116.Second
Light splitting coupler 104 and the 3rd light splitting coupler 106 extract the one thousandth part of light beam and export for carrying out
Test, it is simple to carry out test and observe.
By regulating the first fiber amplifier 112 and the second fiber amplifier 114, corresponding light beam is made to be amplified to produce
The critical point of raw stimulated Raman scattering.Stimulated Raman scattering is that the optical electric field of light laser swashs with the electronics in atom
Send out, vibration in molecule or produce with the lattice in crystal, have the strongest characteristic of being excited, be excited
There is threshold value in Raman scattering, when light path peak power is less, is under this threshold value, generation simply
Common scattering, power is the least, and once peak power improves to reaching threshold value, and scattered light just shows bright
Aobvious laser characteristics, has good monochromaticity, coherence and directivity, and scattered light power will be in finger simultaneously
Sharply increasing of number.First fiber amplifier 112 can be consistent with the second fiber amplifier 114 structure and specification
Also can be inconsistent, in the present embodiment, the first fiber amplifier 112 and the second fiber amplifier 114 structure and
Specification is consistent, it is to avoid affect test because of amplifier cause diversified in specifications, improves test accuracy.Additionally, by
It is consistent with the parameter of the second fiber amplifier 114 in psec light source the 300, first fiber amplifier 112 to be measured,
The parameter of the two-way light beam that the first light splitting coupler 102 light splitting obtains is consistent so that the light beam after two-way amplification
Parameter be also consistent, it is ensured that follow-up test is accurately and reliably.
When corresponding light beam is amplified by the first fiber amplifier 112 and the second fiber amplifier 114, by the
The stimulated Raman scattering light of light is amplified in one measurement apparatus 118 and the detection of the second measurement apparatus 120.Specifically,
Incrementally increase the power of the first fiber amplifier 112 and the second fiber amplifier 114 to improve enlargement ratio,
When amplifying light peak power and being under stimulated Raman scattering threshold value, the first measurement apparatus 118 and second is surveyed
Amount device 120 detects substantially less than scattered light, but when amplification light peak power reaches stimulated Raman scattering threshold value,
Amount of scattered light sharply increases and becomes substantially can survey, and the first fiber amplifier 112 and the second optical fiber is put the most again
The power of big device 114 is turned down to not observing scattered light, at this moment amplifies light and has reached facing of stimulated Raman scattering
Boundary's point.
After completing to amplify light regulation, two bundles are amplified combiner, and carry out pulsewidth test.Adjusted by the first optics
Joint platform 108 and the second optics regulating platform 110 change the path length difference between two-beam, the first optics regulating platform 108
Can select according to practical situation with the degree of regulation of the second optics regulating platform 110, degree of regulation in the present embodiment
Being 1mm, calculate by light beam 3*10^8m/s, the pulse width precision of test is 3.3ps, can be accurate
Complete the pulsewidth test of picosecond, it is ensured that test accuracy.
Picosecond narrow spaces test philosophy is called light beam 1 and light beam 2 as in figure 2 it is shown, two bundles are amplified light,
Make light beam 1 light path keep constant, regulation light beam 2 correspondence optics regulating platform so that it is with light beam 1 time
Relative position between is direction change as shown in arrow in Fig. 2.Because two-beam is in excited Raman
The critical point of scattering to start moment (T1) peak power of superposition enough for two-beam crest after closing bundle
Height, starts to detect stimulated Raman scattering light, and hereafter in a segment limit, (T1-T2) scattered light exists always,
Until T2 two-beam crest staggers, excited Raman light disappears, and the scope recording T1-T2 i.e. can get light to be measured
Pulse width.
First measurement apparatus the 118, second measurement apparatus 120 and the 3rd measurement apparatus 122 both function as detection and are excited
Raman diffused light, the 3rd measurement apparatus 122 specifically detects two-way beam combination and produces stimulated Raman scattering light
Initial time and finish time, obtain pulsewidth test result and show.First measurement apparatus 118 in the present embodiment,
Second measurement apparatus 120 and the 3rd measurement apparatus 122 are spectrogrph, easy and simple to handle and testing reliability is high.
Being appreciated that in other embodiments, first measurement apparatus the 118, second measurement apparatus 120 and the 3rd is measured
Device 122 also can add energy meter with band filter and replace.
3rd measurement apparatus 122 shows that the mode of pulsewidth test result is not unique, directly will can be specifically
Initial time and the finish time of two-way beam combination generation stimulated Raman scattering light enter as pulsewidth test result
Row display, tester can be calculated the pulsewidth of psec light to be measured according to initial time and finish time；
Can also be to calculate initial time and the difference of finish time to show as pulsewidth test result, tester can
It is directly viewable the pulsewidth of psec light to be measured.
Above-mentioned picosecond narrow spaces test device, the first fiber amplifier 112 and the second fiber amplifier 114
The light beam of transmission is amplified to produce the critical point of stimulated Raman scattering, the first measurement apparatus 118 and the respectively
Two measurement apparatus 120 detect the stimulated Raman scattering light of corresponding light beam respectively.First optics regulating platform 108 He
The light beam that second optics regulating platform 110 will transmit at the first fiber amplifier 112 and the second fiber amplifier 114
After being amplified to the critical point of generation stimulated Raman scattering, the path length difference between the light beam of regulation transmission, the 3rd
The two-way beam combination that measurement apparatus 122 detection accesses produces initial time and the end of stimulated Raman scattering light
In the moment, obtain pulsewidth test result and show.Utilize stimulated Raman scattering principle to measure picosecond pulse,
Structural visual, simple to operate and low cost, reduce the testing cost of picosecond narrow spaces.
Above-mentioned picosecond narrow spaces test device, with traditional based on autocorrelation function analyzer and the test of high-speed oscilloscope
Method is compared, and the testing cost of hundreds of thousands or more than million is reduced to less than 20,000 yuan.Meanwhile, by
The simplest and the clearest in the device used, greatly reduce the threshold of picosecond narrow spaces test.
Wherein in an embodiment, the first optics regulating platform 108 includes the first regulation mounting and is arranged at the
One regulation the first delivery of mounting, the first collimating lens, the first coupled lens and the first input head, first
Delivery connects the first light splitting coupler 102, and the first input head connects the first fiber amplifier 112, and first adjusts
Joint mounting is for the distance between regulation the first delivery and the first input head.Light beam passes through from the first delivery
First collimating lens, the first coupled lens reenter optical fiber from the first input head again, by the first adjustment seat
Frame regulates the distance between the first delivery and the first input head to change the distance of light beam.It is appreciated that
The concrete structure of one optics regulating platform 108 is not unique, only need to meet the distance of adjustment beam.
Wherein in an embodiment, the second optics regulating platform 110 includes the second regulation mounting and is arranged at the
Two regulation the second deliveries of mounting, the second collimating lens, the second coupled lens and the second input head, second
Delivery connects the first light splitting coupler 102, and the second input head connects the second fiber amplifier 114, and second adjusts
Joint mounting is for the distance between regulation the second delivery and the second input head.Second optics regulating platform 110
Concrete outcome is similar with the first optics regulating platform 108 with operation principle, does not repeats them here.
Wherein in an embodiment, as it is shown on figure 3, the first fiber amplifier 112 includes the first active light
Fine 240, first bundling device 260 and the first laser instrument 280, the first Active Optical Fiber 240 connects the first optics and adjusts
Joint platform 108 and the first bundling device 260, the first bundling device 260 connects the first laser instrument 280 and the second light splitting coupling
Clutch 104.First Active Optical Fiber 240 is amplified for the light beam exporting the first optics regulating platform 108,
Light beam after first bundling device 260 will amplify is delivered to the second light splitting coupler 104.
Being transmitted light and processing and amplifying by the first Active Optical Fiber 240, technology is simple and is easily achieved.
First laser instrument 280 is for carrying out energy supply to the first Active Optical Fiber 240, and the first laser instrument 280 is concretely
Semiconductor laser.It can also be multiple, in the present embodiment that the quantity of the first laser instrument 280 can be one
The quantity of the first laser instrument 280 is two, improves the confession stabilizability to the first Active Optical Fiber 240.With
One Active Optical Fiber 240 couples the output light of the first laser instrument 280 as gain media, the first bundling device 260
As pumping source, by controlling the output light size of the first laser instrument 280, regulate the first fiber amplifier
The enlargement ratio of 112.It is appreciated that the concrete structure of the first fiber amplifier 112 is not unique, only need to expire
Light beam can be amplified completely.
Further, the first fiber amplifier 112 may also include first mode adapter 220, the first active light
Fine 240 connect the first optics regulating platform 108 by first mode adapter 220.First mode adapter 220
Butt coupling transition for different core optical fibers, it is simple to beam Propagation.
Wherein in an embodiment, the second fiber amplifier 114 includes the second Active Optical Fiber, the second conjunction bundle
Device and second laser, the second Active Optical Fiber connects the second optics regulating platform 110 and the second bundling device, and second
Bundling device connects second laser and the 3rd light splitting coupler 106.Further, the second fiber amplifier 114
Also including the second pattern matcher, the second Active Optical Fiber connects the second optics by the second pattern matcher and regulates
Platform 110.The concrete structure of the second fiber amplifier 114 is similar with the first fiber amplifier 112 with operation principle,
Do not repeat them here.
Embodiment described above only have expressed the several embodiments of the present invention, and it describes more concrete and detailed,
But can not therefore be construed as limiting the scope of the patent.It should be pointed out that, for this area
For those of ordinary skill, without departing from the inventive concept of the premise, it is also possible to make some deformation and change
Entering, these broadly fall into protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be with appended power
Profit requires to be as the criterion.
Claims (10)
1. picosecond narrow spaces test device, it is characterised in that include the first light splitting coupler, second
Light splitting coupler, the 3rd light splitting coupler, the first optics regulating platform, the second optics regulating platform, the first optical fiber
Amplifier, the second fiber amplifier, beam merging apparatus, the first measurement apparatus, the second measurement apparatus and the 3rd survey
Amount device, described first light splitting coupler connects described first optics regulating platform and described second optics regulating platform；
Described first optics regulating platform, described first fiber amplifier and described second light splitting coupler are sequentially connected with,
Described second light splitting coupler connects described first measurement apparatus and described beam merging apparatus；Described second optics is adjusted
Joint platform, described second fiber amplifier and described 3rd light splitting coupler are sequentially connected with, described 3rd light splitting coupling
Clutch connects described second measurement apparatus and described beam merging apparatus；Described beam merging apparatus connects the described 3rd and measures
Device；
Described first light splitting coupler receives psec light to be measured, after described psec light to be measured is divided into two-way light beam
It is delivered to described first optics regulating platform and described second optics regulating platform, described first optics regulating platform respectively
The light beam received is transmitted to described second light splitting coupler, described second light through described first fiber amplifier
Learn regulating platform to be transmitted to described 3rd light splitting coupler through described second fiber amplifier by the light beam received；Institute
State and after the light beam of reception is divided into two-way by the second light splitting coupler, be transmitted separately to described first measurement apparatus and institute
Stating beam merging apparatus, described 3rd light splitting coupler is transmitted separately to described after the light beam of reception is divided into two-way
Two measurement apparatus and described beam merging apparatus；The two-way beam Propagation the extremely the described 3rd that described beam merging apparatus will receive
Measurement apparatus；
Described first fiber amplifier and described second fiber amplifier are respectively used to be amplified to the light beam of transmission
Produce the critical point of stimulated Raman scattering；Described first measurement apparatus and described second measurement apparatus are respectively used to
The stimulated Raman scattering light of the corresponding light beam of detection；
Described first optics regulating platform and described second optics regulating platform at described first fiber amplifier and
After the light beam of transmission is amplified to the critical point of generation stimulated Raman scattering by described second fiber amplifier, adjust
Path length difference between the light beam of joint transmission；Described 3rd measurement apparatus at described first optics regulating platform and
When described second optics regulating platform regulates the path length difference between the light beam of transmission, the two-way light beam that detection accesses is folded
Add initial time and the finish time producing stimulated Raman scattering light, obtain pulsewidth test result and show.
Device the most according to claim 1, it is characterised in that described first optics regulating platform includes
One regulation mounting regulates the first delivery of mounting, the first collimating lens, the first coupling with being arranged at described first
Closing lens and the first input head, described first delivery connects described first light splitting coupler, described first defeated
Enter head and connect described first fiber amplifier, described first regulation mounting be used for regulating described first delivery and
Distance between described first input head.
Device the most according to claim 1, it is characterised in that described second optics regulating platform includes
Two regulation mountings regulate the second delivery of mounting, the second collimating lens, the second coupling with being arranged at described second
Closing lens and the second input head, described second delivery connects described first light splitting coupler, described second defeated
Enter head and connect described second fiber amplifier, described second regulation mounting be used for regulating described second delivery and
Distance between described second input head.
Device the most according to claim 1, it is characterised in that described first optics regulating platform and described
The degree of regulation of the second optics regulating platform is 1mm.
Device the most according to claim 1, it is characterised in that described first fiber amplifier includes
One Active Optical Fiber, the first bundling device and the first laser instrument, described first Active Optical Fiber connects described first optics
Regulating platform and described first bundling device, described first bundling device described first laser instrument of connection and described second point
Photo-coupler.
Device the most according to claim 5, it is characterised in that described first fiber amplifier also includes
First mode adapter, described first Active Optical Fiber connects described first light by described first mode adapter
Learn regulating platform.
Device the most according to claim 1, it is characterised in that described second fiber amplifier includes
Two Active Optical Fibers, the second bundling device and second laser, described second Active Optical Fiber connects described second optics
Regulating platform and described second bundling device, the described second bundling device described second laser of connection and described 3rd point
Photo-coupler.
Device the most according to claim 7, it is characterised in that described second fiber amplifier also includes
Second pattern matcher, described second Active Optical Fiber connects described second light by described second pattern matcher
Learn regulating platform.
Device the most according to claim 1, it is characterised in that the light splitting of described first light splitting coupler
Ratio is 50%；The splitting ratio of described second light splitting coupler and described 3rd light splitting coupler is 1:999, respectively
The one thousandth part of light beam is sent to corresponding described first measurement apparatus and described second measurement apparatus.
Device the most according to claim 1, it is characterised in that described first measurement apparatus, described
Second measurement apparatus and described 3rd measurement apparatus are spectrogrph.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610309365.1A CN105953930B (en) | 2016-05-11 | 2016-05-11 | Picosecond narrow spaces test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610309365.1A CN105953930B (en) | 2016-05-11 | 2016-05-11 | Picosecond narrow spaces test device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105953930A true CN105953930A (en) | 2016-09-21 |
| CN105953930B CN105953930B (en) | 2019-03-01 |
Family
ID=56912416
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610309365.1A Active CN105953930B (en) | 2016-05-11 | 2016-05-11 | Picosecond narrow spaces test device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105953930B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106785832A (en) * | 2016-11-25 | 2017-05-31 | 深圳市杰普特光电股份有限公司 | Pulse optical fiber |
| US11169031B2 (en) | 2018-05-25 | 2021-11-09 | National Chiao Tung University | Measuring device and measuring method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003100929A1 (en) * | 2002-05-24 | 2003-12-04 | Forschungsverbund Berlin E.V. | Method and arrangement for generating amplified spontaneous emission of coherent short-wave radiation |
| CN101699233A (en) * | 2009-09-08 | 2010-04-28 | 中国科学院上海光学精密机械研究所 | Device for measuring width of single picosecond laser pulse |
| CN103808417A (en) * | 2014-03-05 | 2014-05-21 | 河南师范大学 | Measurement device for femtosecond laser pulse width |
| CN104483027A (en) * | 2014-12-04 | 2015-04-01 | 华中科技大学 | Automatic laser pulse width measurement autocorrelator and measurement method |
-
2016
- 2016-05-11 CN CN201610309365.1A patent/CN105953930B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003100929A1 (en) * | 2002-05-24 | 2003-12-04 | Forschungsverbund Berlin E.V. | Method and arrangement for generating amplified spontaneous emission of coherent short-wave radiation |
| CN101699233A (en) * | 2009-09-08 | 2010-04-28 | 中国科学院上海光学精密机械研究所 | Device for measuring width of single picosecond laser pulse |
| CN103808417A (en) * | 2014-03-05 | 2014-05-21 | 河南师范大学 | Measurement device for femtosecond laser pulse width |
| CN104483027A (en) * | 2014-12-04 | 2015-04-01 | 华中科技大学 | Automatic laser pulse width measurement autocorrelator and measurement method |
Non-Patent Citations (1)
| Title |
|---|
| 李旭 等: "《测量飞秒光参量产生器输出光脉冲脉宽的自相关仪的设计》", 《中央民族大学学报（自然科学版）》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106785832A (en) * | 2016-11-25 | 2017-05-31 | 深圳市杰普特光电股份有限公司 | Pulse optical fiber |
| US11169031B2 (en) | 2018-05-25 | 2021-11-09 | National Chiao Tung University | Measuring device and measuring method |
| US11733103B2 (en) | 2018-05-25 | 2023-08-22 | National Yang Ming Chiao Tung University | Measuring device and measuring method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105953930B (en) | 2019-03-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103616164B (en) | A kind of reflectivity based on pulsed laser light source/transmitance comprehensive measuring method | |
| CN107677452B (en) | Few-mode optical fiber comprehensive tester and testing method | |
| CN103712689B (en) | Continuous laser device spectral line width measurement device based on optical frequency comb | |
| CN105762621B (en) | Rare-earth Doped OFAs with complete optical function of measuring | |
| CN103842768A (en) | Optical coherence tomography technique | |
| US20050259241A1 (en) | Optical fiber polarization mode dispersion measurement method and measurement device | |
| CN107064100B (en) | Optical fiber Raman spectrometer based on dispersion time variation | |
| CN103730822A (en) | Ultrashort pulse optical fiber laser system | |
| CN106123933A (en) | A kind of chaos fiber optic loop declines and swings sensing device and method | |
| CN105953930A (en) | Picosecond-level narrow pulse width testing device | |
| CN102252830A (en) | Detection device and detection method of optical ghost image | |
| CN106153215A (en) | A kind of system for detecting temperature in electric power facility | |
| US9270080B1 (en) | Methods and apparatus pertaining to the use and generation of broadband light | |
| US5375011A (en) | Non-linear, real-time, micrometer resolution optical time domain reflectometers for optoelectronic circuits diagnostic and sensing applications | |
| CN105588709B (en) | The test device and method of free space isolator isolation | |
| Djadaojee et al. | Stimulated Brillouin gain spectroscopy of superfluid helium-4 | |
| CN101769819B (en) | Optical fiber dispersion measuring apparatus | |
| CN203690694U (en) | Ultrashort pulse fiber laser system | |
| CN106595492A (en) | High resolution fiber length measurement device and method | |
| US20080266543A1 (en) | Systems and methods for measuring ultra-short light pulses | |
| US6614515B2 (en) | Method and apparatus for dispersion measurement | |
| CN209027994U (en) | A kind of multichannel optical fiber formula gas Raman scatterometry system | |
| Kaliteevskiy et al. | Two-mode coupling model in a few mode fiber | |
| CN103454067B (en) | A kind of method of testing waveguide coupler splitting ratio | |
| CN103308171A (en) | Device and method for measuring optical Brillouin gain spectrum by aid of rectangular spectrum probe light |
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 |