CN102623286A - Coaxial optical pumping device and manufacturing method thereof - Google Patents
Coaxial optical pumping device and manufacturing method thereof Download PDFInfo
- Publication number
- CN102623286A CN102623286A CN2012101205175A CN201210120517A CN102623286A CN 102623286 A CN102623286 A CN 102623286A CN 2012101205175 A CN2012101205175 A CN 2012101205175A CN 201210120517 A CN201210120517 A CN 201210120517A CN 102623286 A CN102623286 A CN 102623286A
- Authority
- CN
- China
- Prior art keywords
- speculum
- taper
- lens
- axis
- sample
- 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 coaxial optical pumping device, which is composed of a conical concave lens, a conical convex lens, a spherical lens and a reflecting mirror with a 45-degree collimation micropore, which are arranged along an optical path direction of pumping light in sequence, wherein an included angle between the reflecting mirror and a pumping light beam is 45 degrees, and an electron beam for detection transmits through the collimation micropore and then is incident to a sample; and the pumping light is superposed with the center of the sample after passing through the conical concave lens, the conical convex lens, the optical axis of light reflected by the reflecting mirror, the central axis of the 45-degree collimation micropore of the reflecting mirror and the central axis of the electron beam. In an ultrafast electron diffraction and electron microscope device, the coaxial optical pumping device realizes the coaxial structure for electron detection of laser pumping and has the advantages of maximally reducing mismatch items between pumping detection and the sample, increasing the time resolving power of a system and simultaneously optimizing the collimation property and quality of the electron beam for detection.
Description
Technical field
The present invention relates to the apparatus field of ultrafast research, particularly ensure the coaxial optical pumping device and the manufacturing approach thereof of ultrafast electric diffraction and ultrafast electron microscope system time resolution capability when the learning gas sample.
Background technology
At present, have superelevation time resolution (psec, 10
-12Second) development of device receives increasing attention and propelling; These technology basically all be based upon with the ultra-short pulse laser be the basis pump probe technical; The time resolution of its system is mainly by three factor decisions: the pumping pulse pulsewidth; Probe pulse pulsewidth, and the mismatch term of pump probe and sample.Along with the development and the maturation of various pulse generating techniques, for example Ah wonderful (10
-18Second) laser pulse and tens femtoseconds (10
-15The appearance of electronic impulse second), preceding two influences of decision systems time resolution are less; And the 3rd caused by pump probe impulse speed difference (size or direction different) that usually its size is along with the size decision of the overlapping space of pump probe, difficult to overcome.Along with the scientific research of ultrafast field to the system time resolution capability require increasingly highly, the mismatch term of pump probe and sample is being the research of sample with gas particularly, becomes the obstacle that restriction whole system time resolution promotes.
Summary of the invention
In order to reduce even to eliminate this mismatch term; Greatly improve the pump probe device; The time resolution of ultrafast electric diffraction and ultrafast electron microscopic lens device particularly, the present invention provides a kind of coaxial optical pumping device and manufacturing approach thereof, reduces the velocity attitude difference of pump probe substantially; Reduce the mismatch term of pump probe and sample, to realize higher system time resolution capability.
Technical solution of the present invention is following:
A kind of coaxial optical pumping device; Characteristics are that its formation is: be provided with taper concavees lens, taper convex lens, sphere lens successively and with the speculum of 45 ° of collimating eyelets along the optical path direction of pump light; This speculum becomes 45 ° of angles with pump beam, the electron beam that is used to survey incides sample through behind the collimating eyelet of this speculum;
The axis of 45 ° of collimating eyelets of the optical axis of described pump light after said taper concavees lens, taper convex lens and speculum, speculum, the axis of said electron beam and sample center overlap.
Make the method for coaxial optical pumping device, its characteristics are that this method may further comprise the steps:
1. described taper concavees lens and taper convex lens are assembled into the taper telescopic system, require pump light, expand the pump beam of restrainting and being collimated into sleeve-like, but do not change direction through behind this taper telescopic system;
2. the pump beam direction in described sleeve-like is provided with described speculum, and this mirror mirror becomes 45 ° of angles with pump beam, makes the axis of 45 ° of collimating eyelets of described speculum coaxial with the axis of said electron beam;
3. the described pump light of careful adjustment, taper concavees lens, taper convex lens and speculum make described pump light overlap through the axis of 45 ° of collimating eyelets of the catoptrical optical axis of said taper concavees lens, taper convex lens and mirror reflects, speculum, the axis and the sample center of said electron beam;
4. on the light path between described taper convex lens and the speculum, add sphere lens;
5. regulate the front and back position of described sphere lens, laser facula size and beam spot on the described sample are complementary along pump light.
The principle of the invention be pump light through the taper concavees lens, form hollow divergent beams, through taper convex lens by collimation, become behind the sleeve light beam again through sphere lens with pumping sample after the microfocus behind the speculum of 45 ° of collimating eyelets; The electronic impulse that is used to survey affacts by the sample area of pulsed light pumping through behind the collimating eyelet of speculum, has realized the coaxial construction of laser pumping electron detection like this.
Compared with prior art, the invention has the beneficial effects as follows:
(1) in ultrafast electric diffraction and electron microscopic lens device, realized the coaxial construction of laser pumping electron detection.
(2) coaxial optical pumping structure can reduce the mismatch term of pump probe and sample to greatest extent, has improved the time resolution of system, particularly during the learning gas sample.
(3) realized sample all optical pumpings of even phase approximation of density on a large scale.
(4) speculum with 45 ° of collimating eyelets is used for reflected pump light simultaneously also as the collimating aperture of electronic impulse, can improve the collimation and the quality of electron beam.
(5) collimating eyelet can also be eliminated the paraxonic stray electron, obtains shorter electronic impulse.
Description of drawings
Fig. 1 is the structural representation of the coaxial optical pumping device of the present invention.
Fig. 2 is that the present invention realizes density and the PHASE DISTRIBUTION of coaxial pump light at the sample place.
Embodiment
Below in conjunction with embodiment and accompanying drawing the present invention is described further, but should limit protection scope of the present invention with this.
See also Fig. 1, Fig. 1 is the structural representation of the coaxial optical pumping device of the present invention.As shown in Figure 1; A kind of coaxial optical pumping device; Its formation is: be provided with taper concavees lens 2, taper convex lens 3, sphere lens 4 successively and with the speculum 6 of 45 ° of collimating eyelets along the optical path direction of pump light 1; This speculum 6 becomes 45 ° of angles with pump beam, the electron beam 5 that is used to survey incides sample 7 through behind the collimating eyelet of this speculum 6.The axis of 45 ° of collimating eyelets of the optical axis of described pump light 1 after said taper concavees lens 2, taper convex lens 3 and speculum 6, speculum 6, the axis and sample 7 centers of said electron beam 5 overlap, and make the transmitted electron number maximum.
Make the method for coaxial optical pumping device, may further comprise the steps:
1. described taper concavees lens 2 are assembled into the taper telescopic system with taper convex lens 3, require pump light 1, expand the pump beam of restrainting and being collimated into sleeve-like, but do not change direction through behind this taper telescopic system;
2. the pump beam direction in described sleeve-like is provided with described speculum 6, and these speculum 6 minute surfaces become 45 ° of angles with pump beam, makes the axis of 45 ° of collimating eyelets of described speculum 6 coaxial with the axis of said electron beam 5;
3. the described pump light of careful adjustment 1, taper concavees lens 2, taper convex lens 3 and speculum 6 make the axis of 45 ° of collimating eyelets of the optical axis of described pump light 1 after said taper concavees lens 2, taper convex lens 3 and speculum 6, speculum 6, the axis and the coincidence of sample 7 centers of said electron beam 5;
4. on the light path between described taper convex lens 3 and the speculum 6, add sphere lens 4;
5. regulate the front and back position of described sphere lens 4, laser facula size and beam spot on the described sample 7 are complementary along pump light 1.
Pump light is as shown in Figure 2 in the density and the PHASE DISTRIBUTION at sample place, and the electronic impulse that is used to survey affacts by the sample area of pulsed light pumping through behind the collimating eyelet of speculum, has realized the coaxial construction of laser pumping electron detection like this.
Claims (2)
1. coaxial optical pumping device; Be characterised in that its formation is: be provided with taper concavees lens (2), taper convex lens (3), sphere lens (4) successively and with the speculum (6) of 45 ° of collimating eyelets along the optical path direction of pump light (1); This speculum (6) becomes 45 ° of angles with pump beam, incide sample (7) behind the collimating eyelet of the electron beam that is used to survey (5) through this speculum (6);
Described pump light (1) overlaps through the axis of 45 ° of collimating eyelets of afterwards optical axis of said taper concavees lens (2), taper convex lens (3) and speculum (6), speculum (6), the axis and sample (7) center of said electron beam (5).
2. method of making the described coaxial optical pumping device of claim 1 is characterized in that this method may further comprise the steps:
Described taper concavees lens (2) and taper convex lens (3) are assembled into the taper telescopic system, require pump light (1), expand the pump beam of restrainting and being collimated into sleeve-like, but do not change direction through behind this taper telescopic system;
Pump beam direction in described sleeve-like is provided with described speculum (6), and this speculum (6) minute surface becomes 45 ° of angles with pump beam, makes the axis of 45 ° of collimating eyelets of described speculum (6) coaxial with the axis of said electron beam (5);
Careful adjustment described pump light (1), taper concavees lens (2), taper convex lens (3) and speculum (6) make described pump light (1) through the axis of 45 ° of collimating eyelets of the optical axis of said taper concavees lens (2), taper convex lens (3) and speculum (6), speculum (6), the axis and the coincidence of sample (7) center of said electron beam (5);
On the light path between described taper convex lens (3) and the speculum (6), add sphere lens (4);
Regulate the front and back position of described sphere lens (4), laser facula size and beam spot on the described sample (7) are complementary along pump light (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210120517.5A CN102623286B (en) | 2012-04-24 | 2012-04-24 | Coaxial optical pumping device and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210120517.5A CN102623286B (en) | 2012-04-24 | 2012-04-24 | Coaxial optical pumping device and manufacturing method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102623286A true CN102623286A (en) | 2012-08-01 |
| CN102623286B CN102623286B (en) | 2014-08-20 |
Family
ID=46563134
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210120517.5A Expired - Fee Related CN102623286B (en) | 2012-04-24 | 2012-04-24 | Coaxial optical pumping device and manufacturing method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102623286B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113567484A (en) * | 2021-06-29 | 2021-10-29 | 北京理工大学 | Four-dimensional high-time-space-resolution ultrafast photon electronic multi-mode detection device |
| CN114633018A (en) * | 2020-12-16 | 2022-06-17 | 阳程科技股份有限公司 | Optical lens module for optical axis inclination processing |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02312237A (en) * | 1989-05-29 | 1990-12-27 | Hitachi Ltd | Semiconductor device, correction of wiring thereof and wiring correcting device |
| CN101294902A (en) * | 2008-06-12 | 2008-10-29 | 复旦大学 | Conversion illuminating microscope on mesomeric state laser pump |
| US20090142748A1 (en) * | 2002-11-26 | 2009-06-04 | Smith Roger E | Microporous materials, methods of making, using, and articles thereof |
-
2012
- 2012-04-24 CN CN201210120517.5A patent/CN102623286B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02312237A (en) * | 1989-05-29 | 1990-12-27 | Hitachi Ltd | Semiconductor device, correction of wiring thereof and wiring correcting device |
| US20090142748A1 (en) * | 2002-11-26 | 2009-06-04 | Smith Roger E | Microporous materials, methods of making, using, and articles thereof |
| CN101294902A (en) * | 2008-06-12 | 2008-10-29 | 复旦大学 | Conversion illuminating microscope on mesomeric state laser pump |
Non-Patent Citations (1)
| Title |
|---|
| 梁文锡等: "超快电子衍射系统的时间空间分辨能力研究及其优化", 《物理学报》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114633018A (en) * | 2020-12-16 | 2022-06-17 | 阳程科技股份有限公司 | Optical lens module for optical axis inclination processing |
| CN113567484A (en) * | 2021-06-29 | 2021-10-29 | 北京理工大学 | Four-dimensional high-time-space-resolution ultrafast photon electronic multi-mode detection device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102623286B (en) | 2014-08-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204989469U (en) | Many emission unit laser rangefinder with strengthen remote range finding ability | |
| CN107167787A (en) | Laser radar and laser radar control method | |
| CN101650438B (en) | Kilohertz common light path satellite laser ranging (SLR) optical device | |
| CN103558193B (en) | A kind of Two Photon Fluorescence | |
| CN104181691A (en) | Folding type scanning optical system based on MEMS micro mirror | |
| CN203365805U (en) | Optical system for generating local area bottle beam with adjustable dimension | |
| CN108387908A (en) | Laser radar optical texture and laser radar apparatus | |
| CN104865576A (en) | Compact ultra short pulse laser remote ranging system and ranging method thereof | |
| CN105928689A (en) | Laser far field divergence angle measurement method and device in satellite laser ranging | |
| CN104155771A (en) | Online monitoring device for micro-optics lens in semiconductor laser to be precisely adjusted and using method of online monitoring device | |
| CN105300348A (en) | Laser range finding apparatus | |
| CN108169847A (en) | A kind of large field of view scan imaging optical system | |
| CN104898108A (en) | Atmosphere remote sensing laser radar optical receiving device based on telescope arrays | |
| CN107153184A (en) | Laser radar and laser radar control method | |
| CN105277931A (en) | Multi-beam collimation emission and receiving system for laser radar and lens thereof | |
| CN104950455A (en) | Method for realizing coaxiality of inner and outer cone mirrors for producing hollow beams | |
| CN205484801U (en) | Laser range finder's optical axis timing system | |
| CN105469837A (en) | Laser fusion backscattered light beam analog device | |
| Teng et al. | The optimization design of sub-regions scanning and vibration analysis for beaconless spatial acquisition in the inter-satellite laser communication system | |
| CN102623286B (en) | Coaxial optical pumping device and manufacturing method thereof | |
| CN104142498A (en) | Novel beam expander of coherent wind lidar | |
| CN103345039B (en) | Prism of corner cube horizontal optics dead axle system and method | |
| CN107153201A (en) | Laser radar and laser radar control method | |
| CN102323676A (en) | Axial symmetry vector polarized light acquiring methods and devices for realizing methods | |
| CN203772260U (en) | Optical fiber laser ranging ray machine system |
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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140820 Termination date: 20180424 |