CN103698025A - Domain wall-based nonlinear impulse autocorrelation measuring method and measuring device - Google Patents
Domain wall-based nonlinear impulse autocorrelation measuring method and measuring device Download PDFInfo
- Publication number
- CN103698025A CN103698025A CN201310744145.8A CN201310744145A CN103698025A CN 103698025 A CN103698025 A CN 103698025A CN 201310744145 A CN201310744145 A CN 201310744145A CN 103698025 A CN103698025 A CN 103698025A
- Authority
- CN
- China
- Prior art keywords
- crystal
- angle prism
- light
- beam splitter
- incident
- 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
Images
Abstract
The invention discloses a domain wall-based nonlinear impulse autocorrelation measuring method and a measuring device in the field of optical impulse characteristic measurement. The method comprises the following steps of dividing a light beam to be measured into two beams, delaying one of the two beams, focusing the two beams of light on a domain wall of a periodically polarized nonlinear ferroelectric crystal to generate corresponding Cerenkov radiation frequency multiplication, ensuring that time domain overlapped sections of the two paths of Cerenkov radiation frequency multiplication generate autocorrelation signals, adjusting the delay of one of the light beams, and measuring a relation between the change of the autocorrelation signals and the change of the delay to obtain an autocorrelation curve so as to obtain the impulse time domain width of the light beam to be measured. By the method and the device, the nonlinear conversion efficiency is improved and the stronger autocorrelation signals are generated.
Description
Technical field
What the present invention relates to is a kind of method and device of measuring light pulse feature field, specifically a kind of based on domain wall nonlinear pulse autocorrelation measurement method and measurement mechanism.
Background technology
Ultrashort laser, be that femtosecond is to the pulsed light of several picosecond magnitudes, be widely used in the subjects such as optics, physics, biology, chemistry, in research light-matter interaction, nonlinear imaging, femtochemistry, femtosecond metrology, laser micro-processing and other fields, had important application.Ultrashort laser pulse time domain width is an important parameter during pulse laser characterizes, to the measurement of ultrashort laser pulse be the most substantially, the most conventional program.
The measuring technique of ultrashort laser pulse is a lot, from the most basic optics autocorrelation method Optical autocorrelation to optical frequency, resolve optical switch method Frequency resolved optical gating, FROG arrives spectral phase interferometry for direct electrical reconstruction Spectral phase interferometry for direct electric field reconstruction again, SPIDER etc., they utilize the pulse of femtosecond pulse self-replication or another pulse as a reference, by closing bundle at nonlinear crystal again after the delayed line in beam splitting Hou Yi road, utilize them under different time retardation, to present that different nonlinear properties are surveyed or counter time pulsewidth or other information of releasing incident pulse.Same method can be segmented according to the difference of the Nonlinear Mechanism of utilizing again again.
This wherein the most basic correlation method due to simple in structure, easy to operate, do not need complicated algorithm, can directly read the time domain pulse width information of pulse to be measured, can directly measure the advantages such as ultrashort pulse from femtosecond to picosecond magnitude and obtain applying the most widely, corresponding commercial instrument is also the most ripe.
At present, the nonlinear frequency transformation mechanism in autocorrelation function analyzer is all to utilize birefringent phase matching technology.But these mechanism all exist two important restriction conditions, first is exactly to mate bandwidth problem, because the frequency spectrum of femtosecond pulse is very wide, has 10～30 nanometers, and so while using actual, the former will use very thin nonlinear crystal, as the bbo crystal of tens micron thickness.For the frequency multiplication of the ultrashort pulse of wide spectrum more, this mechanism is often very restricted; This has also correspondingly brought second restriction, and transformation efficiency lowers.Because frequency-doubling crystal is very thin, operating distance is short, a little less than autocorrelation signal.Acquisition of signal needs sensitive photodiode or photomultiplier to add complicated small signals amplification circuit as probe, and this has also determined the minimum pulse energy that autocorrelation function analyzer can be measured.
In crystal, optical nonlinearity Cerenkov radiation is a kind of new noncollinear second harmonic generation process, its matching condition do not have birefringence or accurate phase-matching condition so harsh, can obtain the second harmonic of high efficiency and broad band.In nonlinear optics, if when the nonlinear polarization phase velocity of wave being excited by first-harmonic is greater than the speed of harmonic wave in medium, this polarized wave will be along Cherenkov angle outgoing second harmonic.The condition that produces Cherenkov's frequency multiplication in nonlinear medium is the refractive index that the refractive index of fundamental frequency light is less than frequency doubled light, this is completely satisfied in the nonlinear material of normal dispersion, and this changes the mechanism and be not subject to mate the restriction of bandwidth, can realize at the logical optical range of crystal.In experiment, find, for the ferroelectric crystal of polarization, in this thin region of interface on He Fu farmland, positive farmland, this phenomenon becomes particularly evident, and Cerenkov radiation is strengthened greatly.Research shows, Broken Symmetry has been caused in this region because crystalline network is asymmetric, and height space asymmetry causes second order nonlinear coefficient to strengthen.Because domain wall presents plane characteristic, the Cherenkov's frequency multiplication exciting on domain wall is symmetrical hot spot.Therefore utilize the non-linear autocorrelation measurement that carries out ultrashort pulse strengthening on domain wall will there is obvious advantage.
Through the retrieval of prior art is found, Chinese patent literature CN101246057, open day 2008-8-20, has recorded a kind of autocorrelation function analyzer of measuring ultra-short laser impulse width.By fixed-focus catoptron, form by motor-driven mobile focusing mirror, nonlinear optics harmonic oscillator, optical filter and photodetector, described nonlinear crystal is arranged on the outside of incident beam travel path, incident light pulse is divided into two-beam through fixed-focus catoptron and the reflection of mobile focusing mirror, and two-beam focuses in nonlinear crystal simultaneously.Two pulses light non-colinear in nonlinear crystal is joined and is produced light overtone, thereby measures the second-order autocorrelation curve of pulse strength, but the mechanism of the harmonic wave producing in this technology is birefringent phase matching.As previously mentioned, birefringent phase matching mechanism has many defects in the measuring process of the femtosecond pulse of wide spectrum, often has coupling angle, phase matching bandwidth and the low problem of transformation efficiency of crystal.Particularly, in the measurement of femtosecond pulse, if phase matching bandwidth is less than the spectral width of femtosecond pulse itself, the autocorrelator trace width obtaining can be bigger than normal, and the pulse width of supposition is also bigger than normal.
Summary of the invention
The present invention is directed to prior art above shortcomings, provide a kind of based on domain wall nonlinear pulse autocorrelation measurement method and measurement mechanism, employing nonlinear interaction mechanism, can produce the phase matching of overall with frequency spectrum, due to the shooting angle of signal not with incident light conllinear, the two angle is larger, makes the adjusting of light path simpler.
The present invention is achieved by the following technical solutions:
The present invention relates to a kind of based on the nonlinear pulse autocorrelation measurement of domain wall method, by light beam to be measured is divided into two bundles, wherein light beam two-beam after postponing focuses on the domain wall of period polarized nonlinear ferroelectric electric crystal, thereby produce corresponding Cerenkov radiation frequency multiplication, the time domain lap of two-way Cerenkov radiation frequency multiplication produces autocorrelation signal, adjust the wherein retardation of light beam, measure the relation between the variation of this autocorrelation signal and the variation of this retardation, obtain autocorrelator trace, thereby obtain the pulse time domain width of light beam to be measured.
Described period polarized nonlinear ferroelectric electric crystal is obtained by following mode: Z-direction sliced crystal, even Z-direction be crystal along optical axis direction, upper and lower surface is correspondence+Z respectively ,-Z face, two sides is parallel and pass through optical polish, and normal to a surface is the spontaneous polarization direction of crystal; On-Z face, plate homogeneous conductive electrode ,+Z face plates One Dimension Periodic conductive electrode, and this crystal is carried out to room temperature electric field polarization.
The peak impulse voltage that described electric field polarization applies is greater than the coercive field of crystal., after polarization is good, electrode is washed away, and cuts polarized crystal for being 3mm along directions X length.
The domain wall of described period polarized nonlinear ferroelectric electric crystal is the interface on He Fu farmland, positive farmland in periodic polarized domain structure, domain wall be spaced apart half of polarization cycle.
Described crystal is the Z cutting mg-doped lithium niobate wafer of the 5%mol doping ratio of thickness 1mm.
The cycle of described One Dimension Periodic conductive electrode is 15 μ m.
Through reflect focalization mirror, the directions X along crystal focuses on the domain wall of period polarized nonlinear ferroelectric electric crystal described two-beam, focus lamp focal length is 10cm, incident angle is 15 degree, the size of focal beam spot in crystal is 150 μ m, the overlap length of two-beam in crystal is 2mm, and focused beam covers 20 domain walls in crystal.When polarization cycle diminishes, it is many that the domain wall number of covering becomes, and corresponding signal is also stronger, but the domain wall roughness descent of simultaneously preparing, polarization difficulty increases.
The beam splitting of described light beam to be measured, the control of retardation and the device of focusing comprise: incident diaphragm, beam splitter, the first right-angle prism, focusing mirror, the second right-angle prism and mobile platform, wherein: treat that photometry entered a place that is forbidden to one and penetrated by incident light, through beam splitter, be divided into two bundles, the first right-angle prism makes the parallel incident focusing mirror of two-beam with the both sides that the second right-angle prism lays respectively at beam splitter, thereby focus on period polarized nonlinear ferroelectric electric crystal, the second right-angle prism is arranged on mobile platform, adjust the horizontal range control to light beam retardation with realization between mobile platform and beam splitter.
The present invention relates to a kind of for realizing the measurement mechanism of said method, comprise: incident diaphragm, beam splitter, the first right-angle prism, focusing mirror, the second right-angle prism, mobile platform, period polarized nonlinear ferroelectric electric crystal, record detector and control system, wherein: treat that photometry entered a place that is forbidden to one and penetrated by incident light, through beam splitter, be divided into two-beam, two-beam forms parallel beam and is incident on focusing mirror through being arranged at the first right-angle prism of beam splitter both sides and the refraction of the second right-angle prism respectively, the second right-angle prism is arranged on mobile platform to adjust the wherein time delay of light beam, focusing mirror focuses on two-beam on the domain wall of period polarized nonlinear ferroelectric electric crystal, thereby generation autocorrelation signal, record detector and record autocorrelation signal, record detector and mobile platform is controlled by control system.
Described two-beam is projeced in conversion sheet through the transmitted light of period polarized nonlinear ferroelectric electric crystal projection, conversion sheet on this is arranged to a backsight window of measurement mechanism, and establish position mark, when optical path adjusting collimates, only need by the upper conversion sheet of incident diaphragm and backsight window like this.
Outgoing place of described autocorrelation signal is provided with diaphragm in order to filter veiling glare.
Described beam splitter with treat that the incident angle of photometry is 45 °.
The first described right-angle prism and the distance of beam splitter equal the center of the second right-angle prism front and back translation from the distance of beam splitter.
The focal length of described focusing mirror is 10cm.
Technique effect
The present invention has improved non-linear transformation efficiency, and the autocorrelation signal of generation is stronger.Based on this machine-processed autocorrelation measurement method, be more suitable for the measurement of ultrashort pulse under to low pulse energy; In the logical light spectrum of nonlinear crystal, can realize efficient frequency conversion, and not limited by birefringence or accurate phase-matching condition; Overcome autocorrelation function analyzer in prior art and incident light has been had to the defect of polarization requirement.Due to transmitted light and autocorrelative signal angle very large, separate completely, make the collimation of light path become very easy, can utilize the limit hole of incident light and transmitted light directly to adjust light path.Can open instrument like this, directly according to incident diaphragm and backsight window adjusting autocorrelation function analyzer.
Accompanying drawing explanation
Fig. 1 is that two bundles intersect the schematic diagram of the Cerenkov radiation that synchronous ultrashort pulse produces at crystal interface place;
Fig. 2 is the frequency spectrum of the femtosecond light of incident centre wavelength 800nm and Cherenkov's frequency doubled light thereof;
Fig. 3 is proving installation structural representation of the present invention;
Fig. 4 is the femtosecond pulse that overall height half-breadth that embodiment 1 measures is 95fs.
Embodiment
Below embodiments of the invention are elaborated, the present embodiment is implemented take technical solution of the present invention under prerequisite, provided detailed embodiment and concrete operating process, but protection scope of the present invention is not limited to following embodiment.
As shown in Figure 1, the present embodiment is divided into two bundles by light beam to be measured, wherein light beam two-beam after postponing focuses on the domain wall of period polarized nonlinear ferroelectric electric crystal, thereby produce corresponding Cerenkov radiation frequency multiplication, the time domain lap of two-way Cerenkov radiation frequency multiplication produces and frequency light, it is autocorrelation signal, adjust the wherein retardation of light beam, measure the relation between the variation of this autocorrelation signal and the variation of this retardation, obtain autocorrelator trace, thereby obtain the pulse time domain width of light beam to be measured.
Period polarized nonlinear ferroelectric electric crystal is obtained by following mode: choosing thickness is the Z cutting mg-doped lithium niobate wafer of the 5%mol doping ratio of 1mm, even if Z-direction is that crystal is along optical axis direction, upper and lower surface is correspondence+Z respectively,-Z face, two sides is parallel and pass through optical polish, and normal to a surface is the spontaneous polarization direction of crystal; On-Z face, plate homogeneous conductive electrode ,+Z face plates the One Dimension Periodic conductive electrode that the cycle is 15 μ m, and this crystal is carried out to room temperature electric field polarization.External electric field used is high voltage pulse electric field, and because the coercive field of magnesium-doped lithium niobate crystal is 4.5kV/mm, so the peak impulse voltage applying is greater than 4.5kV/mm, the length of recurrence interval is long-pending relevant with the real surface of number of times and electrode.After polarization is good, electrode is washed away, and cut polarized crystal for being 3mm along directions X length, its domain wall is the interface on He Fu farmland, positive farmland in periodic polarized domain structure, domain wall be spaced apart half of polarization cycle.
Described two-beam focuses to along directions X through reflect focalization mirror on the domain wall of polarized crystal, and focus lamp focal length is 10cm, and incident angle is 15 degree.The size of focal beam spot in crystal is 150 μ m, and the overlap length of two-beam in crystal is 2mm, and focused beam covers 20 domain walls in crystal.When polarization cycle diminishes, it is many that the domain wall number of covering becomes, and corresponding signal is also stronger, but the domain wall roughness descent of simultaneously preparing, polarization difficulty increases.
The beam splitting of described light beam to be measured, the control of retardation and the device of focusing comprise: incident diaphragm 1, beam splitter 2, the first right-angle prism 3, focusing mirror 4, the second right-angle prism 5 and mobile platform 6, wherein: treat that photometry is by 1 incident of incident diaphragm, through beam splitter 2, be divided into two bundles, the first right-angle prism 3 makes the parallel incident focusing mirror 4 of two-beam with the both sides that the second right-angle prism 5 lays respectively at beam splitter 2, thereby focus on period polarized nonlinear ferroelectric electric crystal 7, the second right-angle prism 5 is arranged on mobile platform 6, adjust the horizontal range control to the delay of light beam with realization between mobile platform 6 and beam splitter 2.
The present embodiment be take Z, and to cut periodic polarized 5%mol magnesium-doped lithium niobate crystal be example, but be not limited to lithium columbate crystal, and other polarized ferroelectric crystals also can.In example, treat the femtosecond laser that wavelength is 800nm centered by photometry, simultaneously in order to utilize the nonlinear factor of maximum lithium columbate crystal maximum, can set incident light is e light.The Cherenkov's frequency doubled light now producing is also e light, and this 0 type matching way has utilized the nonlinear factor tensor elements d of crystal maximum
33.The place that non-linear Cerenkov radiation is only domain wall at positive and negative farmland interface produces, and nonlinear factor herein has very large enhancing.At crystals, Cherenkov angle α is cos α=n
1e/ n
2e, n wherein
1eand n
2ebe respectively the refractive index of fundamental frequency light and frequency doubled light.Be that the outer emergence angle of Cerenkov radiation that 800nm laser is corresponding is about 56 degree with centre wavelength.Because focal beam spot always can cover a plurality of domain walls in crystal, therefore do not need the angle of crystal to adjust, optical path adjusting is convenient.And lithium columbate crystal normal dispersion always in the logical optical range of its optics, always meet non-linear Cerenkov radiation condition.
For the incident light of o light polarization, known according to the dispersion conditions of magnesium-doped lithium niobate crystal, for wavelength, be less than the incident light of 1050nm, there is equally Cerenkov radiation, frequency doubled light is e light, this I type matching way has utilized crystal nonlinear factor tensor elements d
31, the different cos α=n of shooting angle
1o/ n
2e, but still can measure equally.Due to d on domain wall
31be less than d
33, the autocorrelation signal that the o light incident light of same intensity obtains is weak.It is worth mentioning that d on domain wall
33/ d
31≈ 1.7, this point and body medium d
33/ d
31≈ 7 differences.For traditional autocorrelation function analyzer, the incident light of another cross polarization is owing to can not phase matching can not being used for measuring all the time, after can only rotating by polarization, measure, the present invention has overcome autocorrelation function analyzer in prior art the defect of polarization requirement to incident light again.
As shown in Figure 1, when two bundles have the e polarized incident light of an angle to focus on period polarized nonlinear ferroelectric electric crystal 7, they produce Cherenkov's frequency doubled light of a pair of e polarization separately.When the two is when in crystal, space-time is overlapping, in the middle of their Cherenkov's frequency doubled lights, produce the two with frequency light, be autocorrelation signal.
What Fig. 2 showed is to treat the incident light of photometry and the spectrum of Cherenkov's frequency doubled light, can find out that all spectrum components have all obtained conversion completely.Utilize this characteristic of the full bandwidth frequency multiplication of Cerenkov radiation mechanism, can further improve with longer nonlinear crystal the intensity of signal, realize the measurement to more low-yield pulse.
As shown in Figure 3, by one treat photometry by incident diaphragm 1 through beam splitter 2 beam splitting, lead up to right-angle prism 3 and focusing mirror 4 to focus in nonlinear crystal 7, produce corresponding Cherenkov's frequency doubled light 8; Separately leading up to right-angle prism 5 and focusing mirror 4 focuses in nonlinear crystal 7, produces corresponding Cherenkov's frequency doubled light 8.The emergence angle of Cherenkov's frequency doubled light is determined by the phase-matching condition of non-linear Cerenkov radiation.Because right-angle prism 5 is fixed on controlled translation stage 6, thereby can control the time delay of this road light path.When space-time is overlapping in nonlinear crystal 7 after two-way light focuses on, producing Cherenkov and frequency light 10 in the angle of Cherenkov's frequency doubled light 8, is autocorrelation signal.Diaphragm 9 filters other veiling glares, only retains autocorrelation signal 10 for surveying; Control system 12 records the autocorrelation signal intensity that detector 11 detects and controls translation stage 6 and move, and finally obtains the relation curve of autocorrelation signal intensity translation stage position.According to this result curve, directly obtain the time domain width of testing laser pulse, thereby realize pulse width measure.
The e light autocorrelation of the 800nm that the present embodiment obtains is according to as shown in Figure 4, the result of the femtosecond pulse that the overall height half-breadth measuring is 95fs.The present invention is equally applicable to more wide spectrum and the more measurement of short pulse duration laser.
As shown in Figure 3, the present embodiment comprises: incident diaphragm 1, beam splitter 2, the first right-angle prism 3, focusing mirror 4, the second right-angle prism 5, mobile platform 6, period polarized nonlinear ferroelectric electric crystal 7, record detector 11 and control system 12, wherein: treat that photometry is by 1 incident of incident diaphragm, through beam splitter 2, be divided into two-beam, two-beam forms parallel beam and is incident on focusing mirror 4 through being arranged at the first right-angle prism 3 of beam splitter 2 both sides and the refraction of the second right-angle prism 5 respectively, the second right-angle prism 5 is arranged on mobile platform 6 to adjust the wherein time delay of light beam, focusing mirror 4 focuses on two-beam on the domain wall of period polarized nonlinear ferroelectric electric crystal 7, thereby generation autocorrelation signal, record detector 11 and record autocorrelation signal, record detector 11 and mobile platform 6 is controlled by control system 12.
Described two-beam is projeced in conversion sheet 13 through the transmitted light of period polarized nonlinear ferroelectric electric crystal 7 projections, conversion sheet on this 13 is made into a backsight window of measurement mechanism, and do position mark, when optical path adjusting collimates, only need by the upper conversion sheet 13 of incident diaphragm 1 and backsight window like this.
Outgoing place of described autocorrelation signal is provided with diaphragm 9 in order to filter veiling glare.
Described beam splitter 2 with treat that the incident angle of photometry is 45 °.
The first described right-angle prism 3 equals the center of the second right-angle prism 5 front and back translations from the distance of beam splitter with the distance of beam splitter.
Described focusing mirror focal length be 10cm.
As shown in Figure 3, by one treat photometry by incident diaphragm 1 through beam splitter 2 beam splitting, lead up to right-angle prism 3 and focusing mirror 4 to focus in period polarized nonlinear ferroelectric electric crystal 7, produce corresponding Cherenkov's frequency doubled light 8; Separately leading up to right-angle prism 5 and focusing mirror 4 focuses in period polarized nonlinear ferroelectric electric crystal 7, produces corresponding Cherenkov's frequency doubled light 8.The emergence angle of Cherenkov's frequency doubled light is determined by the phase-matching condition of non-linear Cerenkov radiation.Because right-angle prism 5 is fixed on controlled translation stage 6, thereby can control the time delay of this road light path.When space-time is overlapping in period polarized nonlinear ferroelectric electric crystal 7 after two-way light focuses on, producing Cherenkov and frequency light 10 in the angle of Cherenkov's frequency doubled light 8, is autocorrelation signal.Diaphragm 9 filters other veiling glares, only retains autocorrelation signal 10 for surveying; Control system 12 records the autocorrelation signal intensity that detector 11 detects and controls translation stage 6 and move, and finally obtains the relation curve of autocorrelation signal intensity translation stage position.
The light beam transmission after period polarized nonlinear ferroelectric electric crystal 7 focusing on is beaten in upper conversion sheet 13, shows visible light spot.Because the angle of transmitted light and autocorrelation signal is larger, the two separates.Upper conversion sheet 13 can be made into a backsight window of instrument, and do position mark, when optical path adjusting collimates, only need by the upper conversion sheet 13 of incident diaphragm 1 and backsight window like this.
Claims (10)
1. one kind based on the nonlinear pulse autocorrelation measurement of domain wall method, it is characterized in that, by light beam to be measured is divided into two bundles, wherein light beam two-beam after postponing focuses on the domain wall of period polarized nonlinear ferroelectric electric crystal, thereby produce corresponding Cerenkov radiation frequency multiplication, the time domain lap of two-way Cerenkov radiation frequency multiplication produces autocorrelation signal, adjust the wherein retardation of light beam, measure the relation between the variation of this autocorrelation signal and the variation of this retardation, obtain autocorrelator trace, thereby obtain the pulse time domain width of light beam to be measured.
2. method according to claim 1, it is characterized in that, described period polarized nonlinear ferroelectric electric crystal is obtained by following mode: Z-direction sliced crystal, even if Z-direction is that crystal is along optical axis direction, upper and lower surface is correspondence+Z respectively,-Z face, two sides is parallel and pass through optical polish, and normal to a surface is the spontaneous polarization direction of crystal; On-Z face, plate homogeneous conductive electrode ,+Z face plates One Dimension Periodic conductive electrode, and this crystal is carried out to room temperature electric field polarization.
3. method according to claim 1 and 2, is characterized in that, the domain wall of described period polarized nonlinear ferroelectric electric crystal is the interface on He Fu farmland, positive farmland in periodic polarized domain structure, domain wall be spaced apart half of polarization cycle.
4. method according to claim 3, is characterized in that, the cycle of described One Dimension Periodic conductive electrode is 15 μ m.
5. method according to claim 3, is characterized in that, the peak impulse voltage that described electric field polarization applies is greater than the coercive field of crystal.
6. according to the method described in claim 4 or 5, it is characterized in that, the beam splitting of described light beam to be measured, the control of retardation and the device of focusing comprise: incident diaphragm, beam splitter, the first right-angle prism, focusing mirror, the second right-angle prism and mobile platform, wherein: treat that photometry entered a place that is forbidden to one and penetrated by incident light, through beam splitter, be divided into two bundles, the first right-angle prism makes the parallel incident focusing mirror of two-beam with the both sides that the second right-angle prism lays respectively at beam splitter, thereby focus on period polarized nonlinear ferroelectric electric crystal, the second right-angle prism is arranged on mobile platform, adjust the horizontal range control to light beam retardation with realization between mobile platform and beam splitter.
7. one kind for realizing the measurement mechanism of the arbitrary described method of the claims 1-6, it is characterized in that, comprise: incident diaphragm, beam splitter, the first right-angle prism, focusing mirror, the second right-angle prism, mobile platform, period polarized nonlinear ferroelectric electric crystal, record detector and control system, wherein: treat that photometry entered a place that is forbidden to one and penetrated by incident light, through beam splitter, be divided into two-beam, two-beam forms parallel beam and is incident on focusing mirror through being arranged at the first right-angle prism of beam splitter both sides and the refraction of the second right-angle prism respectively, the second right-angle prism is arranged on mobile platform to adjust the wherein time delay of light beam, focusing mirror focuses on two-beam on the domain wall of period polarized nonlinear ferroelectric electric crystal, thereby generation autocorrelation signal, record detector and record autocorrelation signal, record detector and mobile platform is controlled by control system.
8. device according to claim 7, is characterized in that, described two-beam is projeced in conversion sheet through the transmitted light of period polarized nonlinear ferroelectric electric crystal projection, conversion sheet on this is arranged to a backsight window of measurement mechanism, and is established position mark; Outgoing place of described autocorrelation signal is provided with diaphragm in order to filter veiling glare.
9. according to the device described in claim 7 or 8, it is characterized in that, described beam splitter with treat that the incident angle of photometry is 45 °; The focal length of focusing mirror is 10cm.
10. device according to claim 9, is characterized in that, the first described right-angle prism and the distance of beam splitter equal the center of the second right-angle prism front and back translation from the distance of beam splitter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310744145.8A CN103698025B (en) | 2013-12-30 | 2013-12-30 | Based on domain wall nonlinear pulse autocorrelation measurement method and measurement apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310744145.8A CN103698025B (en) | 2013-12-30 | 2013-12-30 | Based on domain wall nonlinear pulse autocorrelation measurement method and measurement apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103698025A true CN103698025A (en) | 2014-04-02 |
| CN103698025B CN103698025B (en) | 2016-08-17 |
Family
ID=50359633
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310744145.8A Active CN103698025B (en) | 2013-12-30 | 2013-12-30 | Based on domain wall nonlinear pulse autocorrelation measurement method and measurement apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103698025B (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104089708A (en) * | 2014-06-13 | 2014-10-08 | 中国科学院上海光学精密机械研究所 | Diagnosis device and diagnosis method for multi-beam ultra-short pulse time synchronization and phase synchronization |
| CN105806494A (en) * | 2016-03-11 | 2016-07-27 | 南京大学 | OPO ultra-short pulse laser pulse width cross-correlation measuring system |
| CN107063480A (en) * | 2017-04-05 | 2017-08-18 | 中国科学院上海光学精密机械研究所 | Based on four-wave mixing scan-type ultrashort laser pulse time domain contrast measuring instrument |
| CN107505054A (en) * | 2017-08-07 | 2017-12-22 | 中国科学院化学研究所 | Real-time in-situ Ps Laser Pulse autocorrelation function analyzer |
| CN107923798A (en) * | 2015-08-26 | 2018-04-17 | 浜松光子学株式会社 | Autocorrelation measurement device |
| CN108593121A (en) * | 2018-04-03 | 2018-09-28 | 上海交通大学 | Ultrashort pulse autocorrelation measurement device and measurement method |
| CN108593120A (en) * | 2018-04-19 | 2018-09-28 | 中国工程物理研究院激光聚变研究中心 | A kind of wavefront sensing methods based on nonlinear interface Cerenkov second harmonic generation |
| CN108896192A (en) * | 2018-06-27 | 2018-11-27 | 上海交通大学 | Pulse autocorrelation measurement device and measurement method based on single-layer graphene |
| CN109883557A (en) * | 2019-02-28 | 2019-06-14 | 上海交通大学 | Integrated optics autocorrelation function analyzer and measurement method based on selenizing molybdenum two-photon absorption |
| CN110530532A (en) * | 2018-05-25 | 2019-12-03 | 财团法人交大思源基金会 | Optical pulse detection device and measurement method |
| CN111854986A (en) * | 2020-07-01 | 2020-10-30 | 华南理工大学 | Collinear ultrashort pulse measuring device and method capable of working in wide spectrum band based on few-layer two-dimensional material |
| CN111854985A (en) * | 2020-07-01 | 2020-10-30 | 华南理工大学 | Ultra-wideband ultra-short pulse measuring device and measuring method based on two-dimensional material |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09133585A (en) * | 1995-11-10 | 1997-05-20 | Hitachi Ltd | Optical pulse train measuring method |
| CN2519256Y (en) * | 2002-01-29 | 2002-10-30 | 中国科学院物理研究所 | Bifunction miniature super short laser pulse self correlation measuring apparatus |
| US20050073689A1 (en) * | 2003-10-01 | 2005-04-07 | Pang H. Yang | Time correlation of ultrafast laser pulses |
| KR101259327B1 (en) * | 2012-04-09 | 2013-05-06 | 포항공과대학교 산학협력단 | Autocorrelator |
-
2013
- 2013-12-30 CN CN201310744145.8A patent/CN103698025B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09133585A (en) * | 1995-11-10 | 1997-05-20 | Hitachi Ltd | Optical pulse train measuring method |
| CN2519256Y (en) * | 2002-01-29 | 2002-10-30 | 中国科学院物理研究所 | Bifunction miniature super short laser pulse self correlation measuring apparatus |
| US20050073689A1 (en) * | 2003-10-01 | 2005-04-07 | Pang H. Yang | Time correlation of ultrafast laser pulses |
| KR101259327B1 (en) * | 2012-04-09 | 2013-05-06 | 포항공과대학교 산학협력단 | Autocorrelator |
Non-Patent Citations (2)
| Title |
|---|
| S.J.HOLMGREN ET AL.: "Ultrashort single-shot pulse characterization with high spatial resolution using localized nonlinearities in ferroelectric domain walls", 《OPTICS LETTERS》, vol. 32, no. 11, 1 June 2007 (2007-06-01), XP001542974 * |
| 邓学伟: "铁电晶体畴壁及畴的非线形光学性质研究及其应用", 《中国博士学位论文全文数据库工程科技辑》, 15 December 2011 (2011-12-15) * |
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104089708B (en) * | 2014-06-13 | 2017-03-15 | 中国科学院上海光学精密机械研究所 | Multi beam ultrashort pulse time synchronized and phase locked diagnostic device and diagnostic method |
| CN104089708A (en) * | 2014-06-13 | 2014-10-08 | 中国科学院上海光学精密机械研究所 | Diagnosis device and diagnosis method for multi-beam ultra-short pulse time synchronization and phase synchronization |
| US10337928B2 (en) | 2015-08-26 | 2019-07-02 | Hamamatsu Photonics K.K. | Autocorrelation measurement device |
| CN107923798A (en) * | 2015-08-26 | 2018-04-17 | 浜松光子学株式会社 | Autocorrelation measurement device |
| CN107923798B (en) * | 2015-08-26 | 2020-06-23 | 浜松光子学株式会社 | Autocorrelation measuring device |
| CN105806494A (en) * | 2016-03-11 | 2016-07-27 | 南京大学 | OPO ultra-short pulse laser pulse width cross-correlation measuring system |
| CN107063480A (en) * | 2017-04-05 | 2017-08-18 | 中国科学院上海光学精密机械研究所 | Based on four-wave mixing scan-type ultrashort laser pulse time domain contrast measuring instrument |
| CN107063480B (en) * | 2017-04-05 | 2019-05-17 | 中国科学院上海光学精密机械研究所 | Based on four-wave mixing scan-type ultrashort laser pulse time domain contrast measuring instrument |
| CN107505054A (en) * | 2017-08-07 | 2017-12-22 | 中国科学院化学研究所 | Real-time in-situ Ps Laser Pulse autocorrelation function analyzer |
| CN108593121A (en) * | 2018-04-03 | 2018-09-28 | 上海交通大学 | Ultrashort pulse autocorrelation measurement device and measurement method |
| CN108593120A (en) * | 2018-04-19 | 2018-09-28 | 中国工程物理研究院激光聚变研究中心 | A kind of wavefront sensing methods based on nonlinear interface Cerenkov second harmonic generation |
| CN110530532A (en) * | 2018-05-25 | 2019-12-03 | 财团法人交大思源基金会 | Optical pulse detection device and measurement method |
| CN110530532B (en) * | 2018-05-25 | 2021-06-08 | 财团法人交大思源基金会 | Optical pulse measuring device and measuring method |
| CN108896192A (en) * | 2018-06-27 | 2018-11-27 | 上海交通大学 | Pulse autocorrelation measurement device and measurement method based on single-layer graphene |
| CN109883557A (en) * | 2019-02-28 | 2019-06-14 | 上海交通大学 | Integrated optics autocorrelation function analyzer and measurement method based on selenizing molybdenum two-photon absorption |
| CN109883557B (en) * | 2019-02-28 | 2020-10-16 | 上海交通大学 | Integrated optical autocorrelator based on molybdenum selenide two-photon absorption and measuring method |
| CN111854986A (en) * | 2020-07-01 | 2020-10-30 | 华南理工大学 | Collinear ultrashort pulse measuring device and method capable of working in wide spectrum band based on few-layer two-dimensional material |
| CN111854985A (en) * | 2020-07-01 | 2020-10-30 | 华南理工大学 | Ultra-wideband ultra-short pulse measuring device and measuring method based on two-dimensional material |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103698025B (en) | 2016-08-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103698025A (en) | Domain wall-based nonlinear impulse autocorrelation measuring method and measuring device | |
| CN102636272B (en) | Femtosecond laser pulse measurement method based on transient grating effect and device | |
| CN101762332B (en) | Single ultrashort laser pulse contrast measuring device | |
| CN101216350B (en) | High power ultra-short laser pulse contrast measuring apparatus and measurement method | |
| CN102661917B (en) | Two-tone femtosecond laser collinear pumping detecting thermal reflection system | |
| CN102313605B (en) | Method and device for measuring self-referenced spectral interference femtosecond laser pulse in real time | |
| CN107677379B (en) | Femtosecond laser pulse waveform measuring device | |
| RU2539678C2 (en) | Method of generating electromagnetic radiation in terahertz range and apparatus for generating electromagnetic radiation in terahertz range | |
| CN105699297B (en) | A kind of single-shot time material light Kerr coefficient measuring device | |
| CN102620666A (en) | Detecting system for semiconductor wafer thickness and detecting method thereof | |
| CN202583052U (en) | Double-color femtosecond laser collinear pumping detection heat reflection device | |
| CN109060150B (en) | Ultra-short pulse time width measuring device and method based on spectral interference | |
| CN106052886A (en) | Laser pulse shape measurer based on third-order correlation method | |
| CN101699233B (en) | Device for measuring width of single picosecond laser pulse | |
| CN103134600A (en) | Autocorrelator | |
| JP2012068621A (en) | Terahertz wave generating element, terahertz wave detecting element, and terahertz time domain spectroscopy system | |
| CN103776550A (en) | Supercontinuum pulse laser measurement device based on nonlinear nano material and method | |
| CN105953929B (en) | A kind of single-shot subpulse width and energy measuring apparatus | |
| CN201166588Y (en) | Apparatus for measuring high power ultra-short laser pulse contrast | |
| CN202511762U (en) | Semiconductor wafer thickness detection system | |
| CN104237164A (en) | Device and method for measuring refractive index of nonlinear optical crystal in terahertz band | |
| CN204903381U (en) | Nonlinearity thin film materials's optical nonlinearity measuring device | |
| CN107101946B (en) | The homologous laser pump (ing) detection device of light delay with probe optical pulse compress technique | |
| CN201724742U (en) | Device for measuring contrast ratio of single-time ultrashort laser pulses | |
| CN102778301B (en) | Real-time measuring device of self-reference spectrum interference femtosecond laser pulse |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |