CN109632705A - Single-shot femtosecond time resolution absorption spectrum measuring apparatus - Google Patents
Single-shot femtosecond time resolution absorption spectrum measuring apparatus Download PDFInfo
- Publication number
- CN109632705A CN109632705A CN201910036143.0A CN201910036143A CN109632705A CN 109632705 A CN109632705 A CN 109632705A CN 201910036143 A CN201910036143 A CN 201910036143A CN 109632705 A CN109632705 A CN 109632705A
- Authority
- CN
- China
- Prior art keywords
- beam splitter
- light path
- absorption spectrum
- measuring apparatus
- planar array
- 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.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
- G01N21/39—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using tunable lasers
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/01—Arrangements or apparatus for facilitating the optical investigation
Abstract
The present invention relates to a kind of Time resolved devices, and in particular to a kind of single-shot femtosecond time resolution absorption spectrum measuring apparatus；Solves the technical issues of existing Time resolved device time of measuring is long, high on laser stability requirement, temporal information is influenced, cannot be measured to biological sample, disposable chemical reaction process, fluid sample by mechanical return precision.The technical solution of the invention is as follows: a kind of single-shot femtosecond time resolution absorption spectrum measuring apparatus, including femtosecond pulse laser, the first beam splitter, probe unit, pump unit；First beam splitter is set on the emitting light path of femtosecond pulse laser；Probe unit is set on the reflected light path of the first beam splitter, pump unit is set on the transmitted light path of the first beam splitter.
Description
Technical field
The present invention relates to a kind of Time resolved devices, and in particular to a kind of single-shot femtosecond time resolution suction
Receive spectral measurement device.
Background technique
Time resolution transient absorption spectroscopy is built upon on pumping-detection technology, i.e., with beam of laser pulse
Sample is pumped, sample molecule is pumped to excitation state, and with another beam with respect to detection optical detection of the pump light Jing Guo certain time-delay
Sample, detection light intersect the sampling realized to sample in sample interior with pump light, and the detection of sample is then penetrated by measurement
Light obtains the absorption Spectrum characteristic of sample with the variation of delay, i.e. transient absorption spectra kinetic characteristics.
Currently, the measurement of transient absorption spectra kinetic characteristics mainly uses two methods: a kind of method is to utilize one
Spectroscopic instruments and point photodetector (such as photomultiplier tube, snowslide pipe)；Another method be using spectroscopic instruments and
Planar array detector (such as ccd detector or photodiode array).No matter which kind of method, transient absorption spectra kinetic characteristics
Measurement require constantly to change by delay line delay of the detection light with respect to pump light, the characteristic for surveying complete set generally requires
Dozens or even hundreds of delay point.Therefore both methods exists following insufficient:
1, it is unfavorable for the transient absorption spectra measurement of biological sample.Since above-mentioned measurement method time of measuring is long, repeating
Since the fatigue that the factors such as fuel factor easily cause sample is even denaturalized during excitation, so coming for some biological samples
Say it is unfavorable.
2, laser stability is required high.Since time of measuring is long, so the stability of laser is dynamic to sample absorption spectrum
Mechanical information can generate certain influence.
3, the time-delay reset precision of existing delay line is influenced by mechanical device.Due to the delay line in above-mentioned measurement method
Delay platform is driven to realize multiple scanning for stepper motor, so mechanical device can have an impact the reseting precision of delay,
And then influence the signal-to-noise ratio of curve.
4, the above method, which cannot achieve the sample of disposable chemical reaction process, laser, has irreversible breaking to sample
Sample and fluid sample etc. transient absorption spectra kinetic characteristics measurement.
Summary of the invention
In order to solve, existing Time resolved device time of measuring is long, to laser stability requirement, the high, time believes
Cease the technology for being influenced, cannot being measured to biological sample, disposable chemical reaction process, fluid sample by mechanical return precision
Problem, the present invention provides a kind of single-shot femtosecond time resolution absorption spectrum measuring apparatus.
The technical solution of the invention is as follows:
A kind of single-shot femtosecond time resolution absorption spectrum measuring apparatus, it is characterised in that:
Including femtosecond pulse laser, the first beam splitter, probe unit, pump unit；
First beam splitter is set on the emitting light path of the femtosecond pulse laser；The reflected light path of first beam splitter
Upper setting probe unit；Pump unit is set on the transmitted light path of first beam splitter；
The probe unit includes the first reflecting mirror being arranged on the first beam splitter reflected light path and is successively set on
Lens on first reflecting mirror reflected light path, the medium that can produce white light pulse, the first cylinder microscope group, one of four parts wave plates,
One polarizing film, promotes mirror, adjustment of image spectrometer, the first planar array detector at sample；
The pump unit includes chopper, the compensation of delay device, second set gradually along the first beam splitter transmitted light path
Cylinder microscope group, the second polarizing film, the second beam splitter；
Second planar array detector is set on the reflected light path of the second beam splitter, is arranged on the transmitted light path of the second beam splitter
Two-mirror；Light barrier is set on the reflected light path of second reflecting mirror；Sample is between the second reflecting mirror and light barrier；
First planar array detector is identical with second planar array detector.
Further, the medium that can produce white light pulse is white stone piece.
Further, the medium that can produce white light pulse is photonic crystal fiber.
Further, in order to which detection accuracy is higher, first planar array detector and second planar array detector are
Ccd detector.
Further, the lens are convex lens.
The beneficial effect of the present invention compared with prior art is:
1, detection light and pump light are shaped as horizontal bar shaped light beam, two groups of water respectively using two groups of cylindrical mirror groups by the present invention
Riglet shaped light beam juxtaposition in sample, in the process, sample is excited by pump light, and detection light is spatially in sharp
The absorption spectrum sampling for sending out aspect product different moments, completes the time encoding of detecting light spectrum；It is mentioned through the detection light process of sample
After rising mirror, horizontal strip light rotates to be vertical strip light, adjustment of image spectrometer is again incident on, by the detecting light spectrum of time encoding
In space development, is finally detected by planar array detector and moved, it can be achieved that disposably obtaining Time resolved in moment
Mechanical characteristic；The present invention does not need constantly to change by delay line detection light with respect to the i.e. measurable complete spy of the delay of pump light
Property, measurement is more convenient and precision is higher.
2, time of measuring of the present invention is very short, and experimental efficiency is high, avoids sample fatigue caused by long-time light excites even
Denaturation, substantially increases the reliability of measurement data.
3, the applicable sample scope of the present invention is wide, is applicable not only to inorganic samples, be also applied for easy light fatigue biological sample,
One-time reaction process, fluid sample etc..
4, signal-to-noise ratio of the present invention is high, does not need the mechanical translation platform of delayed sweep, reduces the mechanical return bring time
Deviation and laser stability bring influence.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of one embodiment of the invention；
Appended drawing reference are as follows:
1- femtosecond pulse laser, the first beam splitter of 2-, the first reflecting mirror of 301-, 302- lens, 303- can produce white light
The medium of pulse, 304- the first cylinder microscope group, one of tetra- parts of 305- wave plates, the first polarizing film of 306-, 307- promote mirror, 308- shadow
As correction spectrometer, the first planar array detector of 309-, 310- sample, 401- chopper, 402- compensation of delay device, the second column of 403-
Face microscope group, the second polarizing film of 404-, the second beam splitter of 405-, the second planar array detector of 406-, the second reflecting mirror of 407-, 408- gear
Tabula rasa, 5- detect light, 6- pump light, 7- pumping correction light.
Specific embodiment
Below in conjunction with drawings and the specific embodiments, the present invention will be further described.
Referring to Fig.1, the present apparatus includes femtosecond pulse laser 1, the first beam splitter 2, probe unit, pump unit；Femtosecond
First beam splitter 2 is set on the emitting light path of pulse laser 1；Probe unit is set on the reflected light path of first beam splitter 2, the
Pump unit is set on the transmitted light path of one beam splitter 2.
Probe unit includes the first reflecting mirror 301, lens 302, the medium 303 that can produce white light pulse, the first cylindrical mirror
One of 304, four parts of group wave plate 305, the first polarizing film 306 promote mirror 307, adjustment of image spectrometer 308 and the battle array detection of the first face
Device 309.
First reflecting mirror 301 is set on the reflected light path of first beam splitter 2；On the reflected light path of first reflecting mirror 301 according to
One of secondary setting lens 302, the medium 303 that can produce white light pulse, 304, four parts of the first cylinder microscope group wave plate 305, first is inclined
Shake piece 306, promotion mirror 307, adjustment of image spectrometer 308 and the first planar array detector 309.Lens 302 in the present embodiment are adopted
With convex lens, in order to generate the detection light in broadband, the medium 303 that can produce white light pulse can be white stone piece and be also possible to light
Photonic crystal fiber uses white stone piece in the present embodiment.
Pump unit includes the chopper 401 set gradually along 2 transmitted light path of the first beam splitter, compensation of delay device 402,
Two cylinder microscope groups 403, the second polarizing film 404, the second beam splitter 405；
Second planar array detector 406, the transmitted light of the second beam splitter 405 are set on the reflected light path of second beam splitter 405
The second reflecting mirror 407 of road setting；Light barrier 408 is set on the reflected light path of second reflecting mirror 407.
Sample 310 is located on the reflected light path of the second reflecting mirror 407, and be located at the second reflecting mirror 407 and light barrier 408 it
Between.
The first planar array detector 309 and the second planar array detector 406 in the present embodiment are ccd detector, and completely
It is identical.
The working principle of the present apparatus is as follows:
The femtosecond pulse that femtosecond pulse laser 1 generates is divided into two beams after the first beam splitter 2, and wherein light beam passes through
Excitation can produce the generation white light pulse of medium 303 of white light pulse as detection light 5 after crossing the first reflecting mirror 301 and lens 302.
Detection light 5 is shaped as horizontal bar shaped light beam by the first cylinder microscope group 304, then passes through quarter-wave plate 305 and polarizing film
306 incident samples 310, through sample 310 detection light 5 after promoting mirror 307 and being changed into vertical bar shaped light beam, using image
The first planar array detector 309 is finally incident in correction spectrometer shaping.
The another light beam separated through the first beam splitter 2 is after chopper 401 and compensation of delay device 402, by the second cylinder
Microscope group 403 is equally shaped as horizontal bar shaped light beam, then reaches the second beam splitter 405 by the second polarizing film 404, is separated into two
Beam, wherein a branch of as pumping correction the second planar array detector 406 of arrival of light 7；Another Shu Zuowei pump light 6 is by the second reflection
Incident sample 310 after mirror 407, and space crossed in sample 310 with detection light 5, through sample 310 pump light 6 by keeping off
Tabula rasa 408 blocks, in order to avoid cause damages to personnel.
Chopper 401 is used to control whether that pump light 6 excites sample 310, when having pump light 6, the first planar array detector
309 detect the detecting light spectrum information that different moments penetrate after sample 310 is excited；When without pump light 6, the first planar array detector
309 detect the detecting light spectrum information that sample 310 penetrates before light excites.Second planar array detector 406 is used to detect pumping school
7 space distribution information of positive light, detection result, which is used to the uneven bring of 6 spatial distribution of calibration pump light, to be influenced.Finally use
Computer programming handles the first planar array detector 309 and the experimental data of the second planar array detector 406 obtains femtosecond time resolution
Absorption spectrum kinetic characteristics.
The above description is only an embodiment of the present invention, and it is not intended to limit the protection scope of the present invention, all to utilize the present invention
Equivalent structure transformation made by specification and accompanying drawing content, is applied directly or indirectly in other relevant technical fields, and wraps
It includes in scope of patent protection of the invention.
Claims (5)
1. a kind of single-shot femtosecond time resolution absorption spectrum measuring apparatus, it is characterised in that:
Including femtosecond pulse laser (1), the first beam splitter (2), probe unit, pump unit；
The first beam splitter (2) are set on the emitting light path of the femtosecond pulse laser (1)；First beam splitter (2) it is anti-
It penetrates and probe unit is set in optical path；Pump unit is set on the transmitted light path of first beam splitter (2)；
The probe unit includes the first reflecting mirror (301) being arranged on the first beam splitter (2) reflected light path and successively sets
Medium (303), the first cylindrical mirror set the lens (302) on the first reflecting mirror (301) reflected light path, can produce white light pulse
Group (304), the first polarizing film (306), sample (310), promotes mirror (307), adjustment of image spectrum at one of four parts wave plates (305)
Instrument (308), the first planar array detector (309)；
The pump unit includes chopper (401), the compensation of delay device set gradually along the first beam splitter (2) transmitted light path
(402), the second cylinder microscope group (403), the second polarizing film (404), the second beam splitter (405)；
It is arranged on the reflected light path of second beam splitter (405) the second planar array detector (406), the transmission of the second beam splitter (405)
Second reflecting mirror (407) are set in optical path；Light barrier (408) are set on the reflected light path of second reflecting mirror (407)；Sample
(310) between the second reflecting mirror (407) and light barrier (408)；
First planar array detector (309) and second planar array detector (406) are identical.
2. single-shot femtosecond time resolution absorption spectrum measuring apparatus according to claim 1, it is characterised in that: described
The medium (303) that can produce white light pulse is white stone piece.
3. single-shot femtosecond time resolution absorption spectrum measuring apparatus according to claim 1, it is characterised in that: described
The medium (303) that can produce white light pulse is photonic crystal fiber.
4. single-shot femtosecond time resolution absorption spectrum measuring apparatus according to claim 2 or 3, it is characterised in that:
First planar array detector (309) and second planar array detector (406) are ccd detector.
5. single-shot femtosecond time resolution absorption spectrum measuring apparatus according to claim 4, it is characterised in that: described
Lens (302) are convex lens.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910036143.0A CN109632705A (en) | 2019-01-15 | 2019-01-15 | Single-shot femtosecond time resolution absorption spectrum measuring apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910036143.0A CN109632705A (en) | 2019-01-15 | 2019-01-15 | Single-shot femtosecond time resolution absorption spectrum measuring apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109632705A true CN109632705A (en) | 2019-04-16 |
Family
ID=66060864
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910036143.0A Pending CN109632705A (en) | 2019-01-15 | 2019-01-15 | Single-shot femtosecond time resolution absorption spectrum measuring apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109632705A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110274885A (en) * | 2019-07-03 | 2019-09-24 | 西安文理学院 | Broad band Time resolved single measurement device |
| CN110376125A (en) * | 2019-07-05 | 2019-10-25 | 中国科学院物理研究所 | A kind of transient absorption spectra measuring system and method |
| CN111780889A (en) * | 2020-06-09 | 2020-10-16 | 华中科技大学 | Method and system for synchronously measuring molecular rotation temperature and arrangement light intensity |
Citations (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2760525Y (en) * | 2004-12-31 | 2006-02-22 | 中国科学院西安光学精密机械研究所 | Optical time-delay device capable of providing dual optical path |
| WO2006107795A1 (en) * | 2005-04-05 | 2006-10-12 | The Board Of Trustees Of The Leland Stanford Junior University | Optical image processing using minimum phase functions |
| CN101271025A (en) * | 2007-03-20 | 2008-09-24 | 北京大学 | Method and device for ultrafast time discrimination measurement of seed photo-signal |
| CN101595379A (en) * | 2006-11-29 | 2009-12-02 | 独立行政法人科学技术振兴机构 | Pumping probe measurement device and the scanning probe microscopy device that uses it |
| US20100090112A1 (en) * | 2006-10-10 | 2010-04-15 | Hamamatsu Photonics K.K. | Single terahertz wave time-waveform measuring device |
| CN102353465A (en) * | 2011-09-30 | 2012-02-15 | 湖南大学 | Time pulse width measurement system for ultrashort pulses in different spatial positions and measurement method thereof |
| CN103048053A (en) * | 2012-12-07 | 2013-04-17 | 中国科学院西安光学精密机械研究所 | Single laser signal-to-noise detection device |
| CN103063315A (en) * | 2012-12-28 | 2013-04-24 | 中国科学院西安光学精密机械研究所 | Once signal to noise ratio measuring method and device based on chirp pulse feature |
| CN103196570A (en) * | 2013-03-27 | 2013-07-10 | 中国科学院上海光学精密机械研究所 | Measuring device of ultrafast optical pulse time wave form |
| CN103576331A (en) * | 2012-08-09 | 2014-02-12 | 中国科学院西安光学精密机械研究所 | Signal to noise ratio improving device and method for chirped pulse laser |
| CN104833650A (en) * | 2015-05-29 | 2015-08-12 | 南开大学 | Pulse terahertz time-domain spectral system with single photoconductive antenna and detection method thereof |
| CN105910995A (en) * | 2016-04-01 | 2016-08-31 | 中国科学院理化技术研究所 | Transient polarization absorption spectrometric measurement method and laser flash photolysis instrument system used for realizing same |
| CN103733045B (en) * | 2011-08-02 | 2017-05-10 | 独立行政法人科学技术振兴机构 | Pump-probe measurement device |
| CN107238583A (en) * | 2017-04-26 | 2017-10-10 | 中国科学院上海光学精密机械研究所 | The femtosecond laser damage non-destructive testing method and device of a kind of deielectric-coating |
| CN107843560A (en) * | 2017-10-27 | 2018-03-27 | 中国人民解放军国防科技大学 | High-spatial-resolution pumping-detection micro-area measuring device, system and method |
| CN207850910U (en) * | 2018-02-02 | 2018-09-11 | 深圳市鹏星光电科技有限公司 | A kind of femtosecond time resolution transient state absorption spectrometer |
| CN108827914A (en) * | 2018-08-23 | 2018-11-16 | 天津大学 | Terahertz transient absorption spectra detection system and carrier lifetime measurement method |
| CN108872073A (en) * | 2017-12-22 | 2018-11-23 | 中国科学院化学研究所 | A kind of femtosecond Broadband pump-excitation/eclipse of the sun or moon-detecting light spectrum instrument |
-
2019
- 2019-01-15 CN CN201910036143.0A patent/CN109632705A/en active Pending
Patent Citations (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2760525Y (en) * | 2004-12-31 | 2006-02-22 | 中国科学院西安光学精密机械研究所 | Optical time-delay device capable of providing dual optical path |
| WO2006107795A1 (en) * | 2005-04-05 | 2006-10-12 | The Board Of Trustees Of The Leland Stanford Junior University | Optical image processing using minimum phase functions |
| US20100090112A1 (en) * | 2006-10-10 | 2010-04-15 | Hamamatsu Photonics K.K. | Single terahertz wave time-waveform measuring device |
| CN101595379A (en) * | 2006-11-29 | 2009-12-02 | 独立行政法人科学技术振兴机构 | Pumping probe measurement device and the scanning probe microscopy device that uses it |
| CN101271025A (en) * | 2007-03-20 | 2008-09-24 | 北京大学 | Method and device for ultrafast time discrimination measurement of seed photo-signal |
| CN103733045B (en) * | 2011-08-02 | 2017-05-10 | 独立行政法人科学技术振兴机构 | Pump-probe measurement device |
| CN102353465A (en) * | 2011-09-30 | 2012-02-15 | 湖南大学 | Time pulse width measurement system for ultrashort pulses in different spatial positions and measurement method thereof |
| CN103576331A (en) * | 2012-08-09 | 2014-02-12 | 中国科学院西安光学精密机械研究所 | Signal to noise ratio improving device and method for chirped pulse laser |
| CN103048053A (en) * | 2012-12-07 | 2013-04-17 | 中国科学院西安光学精密机械研究所 | Single laser signal-to-noise detection device |
| CN103063315A (en) * | 2012-12-28 | 2013-04-24 | 中国科学院西安光学精密机械研究所 | Once signal to noise ratio measuring method and device based on chirp pulse feature |
| CN103196570A (en) * | 2013-03-27 | 2013-07-10 | 中国科学院上海光学精密机械研究所 | Measuring device of ultrafast optical pulse time wave form |
| CN104833650A (en) * | 2015-05-29 | 2015-08-12 | 南开大学 | Pulse terahertz time-domain spectral system with single photoconductive antenna and detection method thereof |
| CN105910995A (en) * | 2016-04-01 | 2016-08-31 | 中国科学院理化技术研究所 | Transient polarization absorption spectrometric measurement method and laser flash photolysis instrument system used for realizing same |
| CN107238583A (en) * | 2017-04-26 | 2017-10-10 | 中国科学院上海光学精密机械研究所 | The femtosecond laser damage non-destructive testing method and device of a kind of deielectric-coating |
| CN107843560A (en) * | 2017-10-27 | 2018-03-27 | 中国人民解放军国防科技大学 | High-spatial-resolution pumping-detection micro-area measuring device, system and method |
| CN108872073A (en) * | 2017-12-22 | 2018-11-23 | 中国科学院化学研究所 | A kind of femtosecond Broadband pump-excitation/eclipse of the sun or moon-detecting light spectrum instrument |
| CN207850910U (en) * | 2018-02-02 | 2018-09-11 | 深圳市鹏星光电科技有限公司 | A kind of femtosecond time resolution transient state absorption spectrometer |
| CN108827914A (en) * | 2018-08-23 | 2018-11-16 | 天津大学 | Terahertz transient absorption spectra detection system and carrier lifetime measurement method |
Non-Patent Citations (4)
| Title |
|---|
| DENGKE WU ET AL.,: "Measurement of femtosecond pulse contrast of low-repetition-rate lasers by optical Kerr effect", 《JOURNAL OF NONLINEAR OPTICAL PHYSICS & MATERIALS》 * |
| WENFENG LUO ET AL.，: "Long cavity and low repetition rate passively mode-locked fiber laser with high-energy right angle trapezoid shaped soliton in anomalous dispersion regime", 《EUR. PHYS. J. D》 * |
| 贺俊芳 等: "基于光克尔门空间扫描单次激光信噪比测量", 《光子学报》 * |
| 赵小侠 等: "激光诱导硬币等离子体特征参数的研究", 《原子与分子物理学报》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110274885A (en) * | 2019-07-03 | 2019-09-24 | 西安文理学院 | Broad band Time resolved single measurement device |
| CN110274885B (en) * | 2019-07-03 | 2022-04-05 | 西安文理学院 | Broadband time-resolved absorption spectrum single measurement device |
| CN110376125A (en) * | 2019-07-05 | 2019-10-25 | 中国科学院物理研究所 | A kind of transient absorption spectra measuring system and method |
| CN110376125B (en) * | 2019-07-05 | 2020-07-24 | 中国科学院物理研究所 | Transient absorption spectrum measuring system and method |
| CN111780889A (en) * | 2020-06-09 | 2020-10-16 | 华中科技大学 | Method and system for synchronously measuring molecular rotation temperature and arrangement light intensity |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109632705A (en) | Single-shot femtosecond time resolution absorption spectrum measuring apparatus | |
| CN105758834B (en) | A kind of biochip test method of induced with laser and CCD acquisition | |
| AU2021103510A4 (en) | Tip-Enhanced Raman Spectral Microscopic Imaging Device | |
| CN108120702B (en) | Super-resolution fluorescence lifetime imaging method and device based on parallel detection | |
| CN108007571B (en) | CARS light beam space stability test control system and method based on optical fiber coupling | |
| CN103604502B (en) | A kind of Raman spectrometer detecting high scattering material | |
| CN105699317A (en) | Terahertz time-domain spectrograph capable of entering at fixed angle and simultaneously detecting transmission and reflection | |
| US9625389B2 (en) | Light measuring device and light measuring method | |
| CN106030288B (en) | Fluorescence analyzer | |
| CN102566048A (en) | Astigmatism-based sample axial drift compensating method and device | |
| CN112098330B (en) | Atomic concentration measuring device and method for alkali metal vapor laser | |
| WO2021228187A1 (en) | Pulse-type delay dispersion spectrum measurement method and apparatus, and spectral imaging method and apparatus | |
| CN109632721B (en) | LRSPR-fluorescence imaging parallel detection device and LRSPR chip manufacturing method | |
| CN107462849B (en) | Device and method for measuring radio frequency line transmission factor based on atomic energy level | |
| CN211652548U (en) | High-sensitivity Raman spectrometer based on photomultiplier | |
| CN103499391A (en) | Spectrum measuring system | |
| CN110823388A (en) | Film thermal response single-pulse detection method under ultrafast laser photon time stretching | |
| CN108362676A (en) | CARS microscopic imaging devices and method based on photon crystal optical-fiber probe excitation | |
| CN113189082B (en) | Trace organic pollutant analytical spectrometer based on double-pulse-width laser and detection method | |
| EP2157420A1 (en) | Apparatus and method for investigating a sample using an electro-optic THz-transceiver with the reflected pump beam being used as the probe beam | |
| CN101592598A (en) | A kind of trace substance analysis device that absorbs based on near-field optical traveling-wave | |
| CN201273880Y (en) | Apparatus for nondestructively testing doping concentration of laser crystal | |
| US5151748A (en) | Optical sensor for the measurement of molecular orientation and viscosity of polymeric materials based on fluorescence radiation | |
| CN110132886B (en) | High-sensitivity terahertz spectrum detection device and method for liquid concentration | |
| JP2015007548A (en) | Spectrophotofluorometer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190416 |
|
| RJ01 | Rejection of invention patent application after publication |