CN207798654U - A kind of measuring device measuring evanescent wave - Google Patents
A kind of measuring device measuring evanescent wave Download PDFInfo
- Publication number
- CN207798654U CN207798654U CN201820105456.8U CN201820105456U CN207798654U CN 207798654 U CN207798654 U CN 207798654U CN 201820105456 U CN201820105456 U CN 201820105456U CN 207798654 U CN207798654 U CN 207798654U
- Authority
- CN
- China
- Prior art keywords
- angle prism
- faceted pebble
- bevel edge
- angle
- light
- 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.)
- Expired - Fee Related
Links
Landscapes
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
The utility model discloses a kind of measuring devices measuring evanescent wave, including mobile console, further include the firm banking and straight reciprocating motion apparatus being arranged on mobile console, the first right-angle prism is fixed on firm banking, the second right-angle prism is fixed on straight reciprocating motion apparatus, the bevel edge faceted pebble of first right-angle prism is opposite with the bevel edge faceted pebble of the second right-angle prism, further includes light source, the detection of the first photodetector, the second photodetector, lock-in amplifier and X Y recorders.The utility model can experiment indoor observation, measure optics Tunneling Phenomenon in related physical parameter, it is simple in structure, cheap, easy to maintain.
Description
Technical field
The utility model is related to surface non-linear optical fields, and in particular to a kind of measuring device measuring evanescent wave is fitted
For to the correlated observation of nanoscale evanescent wave, measurement and being utilized in laboratory.
Background technology
When light is from first medium (refractive index n1) (as shown in Figure 1) directive second medium (refractive index n2), n1>n2, enter
Firing angle is θ1, refraction angle θ2, incidence angle θ1It is gradually increased to critical angle, it is further continued for increasing θ1Make θ1>θcLight
Line is generated without refraction light in second medium completely at this time by the first medium where being all reflected back to incident light.This
It is exactly the total reflection phenomenon of the light known to us (shown in Fig. 1).When light is when dielectric interface is totally reflected, incident optical energy
Amount is lost by 100% reflection without refractive power.
It is n another refractive index3(n3>n2) third medium be placed in second medium (as shown in Figure 2), so that third is situated between
The order of magnitude that the surface of matter is parallel with the interface of first medium, second medium and distance d is wavelength X, experimentally exists really
It has been measured in third medium and has entered the light wave of third medium through second medium and be known as evanscent field or evanescent field.It is this to work as incidence
Angle θ1More than cirtical angle of total reflection θcAnd light the phenomenon that entering third medium through second medium, it is referred to as optics tunneling effect.Cause
Transmitted field and mirror field are controlled by distance d between first medium and third medium when to be totally reflected, therefore people are also this
One phenomenon is known as " frustrated total internal reflection ".Optics Tunneling Phenomenon has extensive theoretical and application value.
Utility model content
The purpose of this utility model is the observation and Utilizing question for optics Tunneling Phenomenon, provides a kind of measure and suddenly dies
The measuring device of wave, can be in the complete experimental provision of the related physical parameter in experiment indoor observation, measurement optics Tunneling Phenomenon.
A kind of measuring device measuring evanescent wave, including mobile console further include consolidating of being arranged on mobile console
Determine pedestal and straight reciprocating motion apparatus, the first right-angle prism is fixed on firm banking, is fixed on straight reciprocating motion apparatus
There is the second right-angle prism, the bevel edge faceted pebble of the first right-angle prism is opposite with the bevel edge faceted pebble of the second right-angle prism, linear reciprocation fortune
Dynamic device can drive the second right-angle prism to make the bevel edge faceted pebble of the second right-angle prism far from or close to the first right-angle prism
Bevel edge faceted pebble, the emergent light of light source form incident light after collector lens, incident light pass through the second right-angle prism wherein one
The bevel edge faceted pebble through the second right-angle prism is transmitted and is reflected respectively after a right-angle side faceted pebble is incident in the second right-angle prism
Transmitted light and reflected light are formed, reflected light is after another right-angle side faceted pebble of the second right-angle prism by the second photodetector
Detection, transmitted light sequentially pass through gap between the bevel edge faceted pebble of the first right-angle prism and the bevel edge faceted pebble of the second right-angle prism,
It is detected by the first photodetector after the bevel edge faceted pebble of first right-angle prism and the right-angle side faceted pebble of the first right-angle prism, the first light
Electric explorer is connect by lock-in amplifier with X-Y function recording instruments, and the second photodetector is connect with X-Y function recording instruments.
The bevel edge faceted pebble of first right-angle prism as described above and the bevel edge faceted pebble of the second right-angle prism are that flatness is 1
The spherical surface of~2 apertures.
The utility model has the advantages that compared with the existing technology：
Generate the first right-angle prism and the second right-angle prism that the component of optics Tunneling Phenomenon is oppositely arranged by bevel edge faceted pebble
It realizes, the material of the first right-angle prism and the second right-angle prism is made with general K9 glass, straight reciprocating motion apparatus essence
Degree is high, and the precision that most low energy reaches 0.01mm precision is mobile, and the first photodetector is served as by general photomultiplier, observes
As a result it is shown by X-Y function recording instruments.This experimental provision can be built by existing Laboratory Instruments, without separately configuring it
His special observation, measuring instrument, it is simple in structure, cheap, easy to maintain.It can be in experiment indoor observation, measurement optics tunnelling
Related physical parameter in phenomenon.
Description of the drawings
Fig. 1 is reflected light and transmitted light schematic diagram.
Fig. 2 is frustrated total reflection schematic diagram.
Fig. 3 is the structural schematic diagram of the utility model.
In figure：1- light sources；2- collector lenses；The first right-angle prisms of 3-；The second right-angle prisms of 4-, the second photodetections of 5-
Device；The first photodetectors of 6-；7- lock-in amplifiers；8-X-Y function recording instruments；9- mobile station apertures (diameter 1cm)；10- enters
Penetrate light；11- reflected lights；12- transmitted lights；13- mobile consoles；14- straight reciprocating motion apparatus, 15- firm bankings.
Specific implementation mode
As shown in figure 3, a kind of measuring device measuring evanescent wave, including mobile console 13, further include being arranged in movement
Firm banking 15 on console 13 and straight reciprocating motion apparatus 14 are fixed with the first right-angle prism 3 on firm banking 15, directly
The second right-angle prism 4, the bevel edge faceted pebble of the first right-angle prism 3 and the second right-angle prism 4 are fixed on line reciprocator 14
Bevel edge faceted pebble it is opposite, straight reciprocating motion apparatus 14 can drive the second right-angle prism 4 so that the second right-angle prism 4 bevel edge rib
Bevel edge faceted pebble of the face far from or close to the first right-angle prism 3, the emergent light of light source 1 form incident light after collector lens 2,
Incident light be incident in the second right-angle prism 4 by one of the second right-angle prism 4 right-angle side faceted pebble after through the second right angle
The bevel edge faceted pebble of prism 4 is transmitted and is reflected to form respectively transmitted light and reflected light, and reflected light passes through the second right-angle prism 4
It is detected by the second photodetector 5 after another right-angle side faceted pebble, transmitted light sequentially passes through the bevel edge faceted pebble of the first right-angle prism 3
The bevel edge faceted pebble in gap, the first right-angle prism 3 between the bevel edge faceted pebble of the second right-angle prism 4 and the first right-angle prism 3
It is detected by the first photodetector 6 after right-angle side faceted pebble, the first photodetector 6 is recorded by lock-in amplifier 7 and X-Y functions
Instrument 8 connects, and the second photodetector 5 is connect with X-Y function recording instruments 8.The bevel edge faceted pebble and the second right angle of first right-angle prism 3
The bevel edge faceted pebble of prism 4 is the spherical surface that flatness is 1~2 aperture.
He-Ne laser can be used in light source 1, what the main component for generating optics Tunneling Phenomenon was oppositely arranged by bevel edge faceted pebble
First right-angle prism 3 and the realization of the second right-angle prism 4, the bevel edge of the bevel edge faceted pebble of the first right-angle prism 3 and the second right-angle prism 4
Between faceted pebble be gap, the emergent light that light source 1 is sent out after collector lens 2 the second right-angle prism of vertical incidence 4 wherein one
A right-angle side faceted pebble enters in the second right-angle prism 4, and reflection occurs in the bevel edge faceted pebble of the second right-angle prism 4 and transmission formation is anti-
Light and transmitted light are penetrated, reflected light is emitted by another right-angle side faceted pebble of the second right-angle prism 4, into the second photodetector 5.Thoroughly
It penetrates light and passes sequentially through gap, then the first right-angle prism 3 is entered by the bevel edge faceted pebble of the first right-angle prism 3, then is straight by first
Enter the first photodetector 6, the first photodetector 5 and the second photodetector 6 after the right-angle side faceted pebble outgoing of angle prism 3
It is placed on accurate adjustable three-dimensional regulation holder, the first photodetector 6 connects lock-in amplifier 7, lock-in amplifier 7 and X-Y letters
Number recorder connection.To reduce other interference, mobile console is placed on optical table.
The basic parameter and configuration standard of all parts of the utility model：
First right-angle prism 3 and the second right-angle prism 4：Material：K9 glass；Size：10mm × 10mm × 3mm (right-angle sides
× right-angle side × thickness)；
Straight reciprocating motion apparatus 14：Stroke accuracy is not less than 0.01mm；Stroke ± 12.5mm；
First photodetector 6 and the second photodetector 5：8 dynode of photomultiplier or more, cathode effective diameter
25mm or more, spectral response recommended range：300~650nm, peak wavelength：430±20nm；
Three-dimensional regulation holder：Three direction degree of regulation are not less than 0.1mm；Stroke ± 6.5mm；
Lock-in amplifier 7：Measurement range：10-9~10-7Ampere；
X-Y function recording instruments：Measurement range：100mV~100V, decay multiplying power：0.01~1000 times, interface form：
RS232, data output：Received text format, curve are shown：Simultaneous display is on the computer screen.
Utility model device can be observed effectively, measure evanescent wave transmissivity and lambda1-wavelength, incident angle, medium
The factors such as thickness between relationship.
Specific implementation case described in the utility model is given an example to the spirit of the present invention.This practicality
Novel person of ordinary skill in the field described specific implementation case can be done various modifications or additions or
It substitutes, but without departing from the spirit of the present application or surmounts defined in the appended claims by a similar method
Range.
Claims (2)
1. a kind of measuring device measuring evanescent wave, including mobile console（13）, which is characterized in that further include being arranged in movement
Console（13）On firm banking（15）And straight reciprocating motion apparatus（14）, firm banking（15）On be fixed with the first right angle
Prism（3）, straight reciprocating motion apparatus（14）On be fixed with the second right-angle prism（4）, the first right-angle prism（3）Bevel edge faceted pebble
With the second right-angle prism（4）Bevel edge faceted pebble it is opposite, straight reciprocating motion apparatus（14）The second right-angle prism can be driven（4）So that
Second right-angle prism（4）Bevel edge faceted pebble far from or close to the first right-angle prism（3）Bevel edge faceted pebble, light source（1）Outgoing
Light passes through collector lens（2）After form incident light, incident light passes through the second right-angle prism（4）One of right-angle side faceted pebble enter
It is mapped to the second right-angle prism（4）Through the second right-angle prism after interior（4）Bevel edge faceted pebble transmitted and reflected to form respectively transmission
Light and reflected light, reflected light pass through the second right-angle prism（4）Another right-angle side faceted pebble after by the second photodetector（5）It visits
It surveys, transmitted light sequentially passes through the first right-angle prism（3）Bevel edge faceted pebble and the second right-angle prism（4）Bevel edge faceted pebble between
Gap, the first right-angle prism（3）Bevel edge faceted pebble and the first right-angle prism（3）Right-angle side faceted pebble after by the first photodetector
（6）Detection, the first photodetector（6）By lock-in amplifier（7）With X-Y function recording instruments（8）Connection, the second photodetection
Device（5）With X-Y function recording instruments（8）Connection.
2. a kind of measuring device measuring evanescent wave according to claim 1, which is characterized in that first right-angled edge
Mirror（3）Bevel edge faceted pebble and the second right-angle prism（4）Bevel edge faceted pebble be flatness be 1~2 aperture spherical surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820105456.8U CN207798654U (en) | 2018-01-23 | 2018-01-23 | A kind of measuring device measuring evanescent wave |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820105456.8U CN207798654U (en) | 2018-01-23 | 2018-01-23 | A kind of measuring device measuring evanescent wave |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207798654U true CN207798654U (en) | 2018-08-31 |
Family
ID=63269759
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820105456.8U Expired - Fee Related CN207798654U (en) | 2018-01-23 | 2018-01-23 | A kind of measuring device measuring evanescent wave |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207798654U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108007869A (en) * | 2018-01-23 | 2018-05-08 | 荆楚理工学院 | A kind of measuring device for measuring evanescent wave |
-
2018
- 2018-01-23 CN CN201820105456.8U patent/CN207798654U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108007869A (en) * | 2018-01-23 | 2018-05-08 | 荆楚理工学院 | A kind of measuring device for measuring evanescent wave |
| CN108007869B (en) * | 2018-01-23 | 2024-03-19 | 荆楚理工学院 | Measuring device for measuring evanescent wave |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106556573B (en) | A kind of experimental provision for being used to determine glass refraction | |
| CN101922919B (en) | Non-contact measurement method for geometric parameters of optical part and measuring device thereof | |
| CN204694636U (en) | A kind of novel Raman probe based on fiber optic splitter | |
| CN104930988B (en) | A kind of fiber array end face inclination angle measuring instrument and measuring method | |
| CN110470231A (en) | A kind of transparent substance thickness laser measurement method and system | |
| CN103364090B (en) | Measure the device and method that ultra-short pulse laser propagates phase velocity in media as well | |
| CN109807471A (en) | A kind of laser mark printing device and method | |
| CN103983610A (en) | Trace fluid refractive index measuring device and measuring method based on spectrum interference | |
| CN207798654U (en) | A kind of measuring device measuring evanescent wave | |
| CN108007869A (en) | A kind of measuring device for measuring evanescent wave | |
| CN103808693B (en) | Use the experimental technique of the experimental provision measuring dull and stereotyped refractive index of transparent medium | |
| CN201615890U (en) | Non-contact plate glass surface crack detection device | |
| CN2132973Y (en) | Laser surface raughness detector | |
| CN204101461U (en) | Raman probe and can the Raman signal sniffer of auto-focusing | |
| CN203881304U (en) | Device for measuring deformation of diamond anvil cell under extreme high-temperature and high-pressure conditions | |
| CN110425987A (en) | A kind of penetrability laser thickness gauge | |
| CN207198037U (en) | A kind of instrument for determining index of refraction of liquid | |
| CN202748008U (en) | Measurement apparatus for non-contact measurement of thickness of optical lens center | |
| CN203116948U (en) | Laser transverse mode discriminator | |
| CN103278102B (en) | The laser measurement system of the three-dimensional deformation of a kind of object and measuring method thereof | |
| CN203286992U (en) | Detection device for verticality of laser beam | |
| CN210513029U (en) | Penetrating laser thickness gauge | |
| CN108572160A (en) | A kind of refractometer of profile measurement | |
| WO1988001373A1 (en) | Apparatus for measuring properties of a laser emission | |
| CN205826515U (en) | Acoustical signal detector based on surface wave and reflecting light sonomicroscope |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| 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: 20180831 Termination date: 20190123 |