CN110353624A - A method of cornea scattered signal is amplified based on phonon crystal resonance technique - Google Patents
A method of cornea scattered signal is amplified based on phonon crystal resonance technique Download PDFInfo
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- CN110353624A CN110353624A CN201910656706.6A CN201910656706A CN110353624A CN 110353624 A CN110353624 A CN 110353624A CN 201910656706 A CN201910656706 A CN 201910656706A CN 110353624 A CN110353624 A CN 110353624A
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B3/00—Apparatus for testing the eyes; Instruments for examining the eyes
- A61B3/10—Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions
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Abstract
The present invention provides a kind of method based on phonon crystal resonance technique amplification cornea scattered signal, cornea elasticity modulus is measured using detection brillouin scattering signal, it is resonated using photonic crystal structure signal to amplify brillouin scattering signal faint in cornea, brillouin scattering signal can be amplified by focusing on phonon crystal, measurement of the Lai Jinhang for cornea elasticity modulus.The system and device formed using the equipment such as continuous conductor laser and photonic crystal structure, brillouin scattering signal is generated by continuous conductor laser system, signal amplification is obtained in phonon crystal, amplified signal is received by reception system, the brillouin scattering signal of cornea is obtained, cornea elastic characteristic is further analyzed.The invention has the advantages that being amplified using phonon crystal signal amplification technique to faint brillouin scattering signal.
Description
Technical field
It is specially a kind of to be based on acousto-optic the present invention relates to a kind of method based on phonon crystal amplification brillouin scattering signal
The method of crystal resonance technology amplification cornea scattered signal.
Background technique
The present invention mainly passes through sound as a kind of method based on photonic crystal structure amplification brillouin scattering signal
The technology of sub- crystal resonance signal amplification amplifies faint brillouin scattering signal.Invention thought is to utilize Brillouin
The elastic characteristic of scatter sounding biological tissue has a broad prospect of application, but simultaneously for the method for scattered signal amplification its related report
Seldom.It is essentially all highly sensitive around utilizing at present in relation to the method using Brillouin scattering measurement cornea elasticity modulus
The photon receiver of degree, and the accuracy by improving system measure, and to during generating brillouin scattering signal
The method of amplification scattered signal lacks corresponding solution.
Summary of the invention
The purpose of the present invention is to provide directly amplify cornea Brillouin scattering based on acousto-optic crsytal signal resonance technique
The method of signal.
A method of cornea scattered signal being amplified based on phonon crystal resonance technique, using phonon crystal resonance signal
The method of amplification is directly amplified for generating faint brillouin scattering signal in medium.Utilize semiconductor continuous laser
The system and device of the equipment such as device and photonic crystal structure composition generates Brillouin scattering letter by continuous conductor laser system
Number, signal amplification is obtained in phonon crystal, and amplified signal is received by reception system, obtains the Brillouin of cornea
Scattered signal, further analyzes cornea elastic characteristic, and detection result will measure eye currently with Brillouin scattering to solution
Tissue signal is faint, it is difficult to which the problems such as acquiring has potential application.
It include continuous conductor laser using the experimental detection device of the method: coherence laser, convex lens
One, diaphragm one, convex lens two, convex lens three, phonon crystal device stage, cornea, convex lens four, convex lens five, diaphragm
Two, convex lens six, F-P scanning standard tool, detector, F-P scanning standard have controller, driver, photon information capture card, electricity
Brain.
The detailed process of amplified signal is continuous conductor laser: it is 532nm that coherence laser, which launches wavelength,
Laser beam filter by convex lens one, diaphragm one to light beam, laser beam convex lens two, convex lens three, phonon crystal
Device stage focuses in cornea, and in focal position, excitation brillouin scattering signal prolongs direction of advance transmission, passes sequentially through
Convex lens four, convex lens five, diaphragm two, convex lens six, F-P scanning standard has controller, adopts to photon information driver respectively
Truck is driven, and light beam enters in detector by F-P scanning standard tool, is collected by photon signal capture card, signal is passed
It is defeated on computer.
Further, using the continuous conductor laser of 532nm output wavelength: Coherence laser Brillouin
Scattered signal, phonon crystal carry out intracavitary signal resonance amplification.
Advantages of the present invention: the energy very little as required for the elasticity modulus using Brillouin scattering measurement cornea, and
It is very faint to measure obtained signal, therefore is difficult to detect brillouin scattering signal with usual method.But phonon crystal is benefit
It is resonated, signal is amplified, using photon receiver collecting signal, most back and forth in the cavity with brillouin scattering signal is generated
The elastic characteristic of analysis cornea eventually.
Detailed description of the invention
Fig. 1 is the principle of the present invention figure.
Shown in Fig. 1: continuous conductor laser: Coherence laser 1, convex lens 1, diaphragm 1, convex lens two
4, convex lens 35, phonon crystal device stage 6, cornea 7, convex lens 48, convex lens 59, diaphragm 2 10, convex lens six
11, F-P scanning standard has 12, detector 13, F-P scanning monitor 14, driver 15, photon information capture card 16, computer 17.
Specific embodiment
A method of cornea scattered signal being amplified based on phonon crystal resonance technique, continuous conductor laser:
Coherence laser 1, convex lens 1, diaphragm 1, convex lens 24, convex lens 35, phonon crystal device stage 6, eye
Cornea 7, convex lens 48, convex lens 59, diaphragm 2 10, convex lens 6 11, F-P scanning standard have 12, detector 13, and F-P is swept
Retouch etalon controller 14, driver 15, photon information capture card 16, computer 17；The detailed process of above-mentioned amplified signal is half
Conductor continuous wave laser: coherence laser 01 launches the laser beam that wavelength is 532nm, by one 2 diaphragm one of convex lens
03, it filters to light beam, laser beam convex lens 24, convex lens 35, phonon crystal device stage 06 focus on cornea
In 07, focal position excitation brillouin scattering signal prolong direction of advance transmission, pass sequentially through convex lens 48, convex lens 59,
Diaphragm 2 10, convex lens 6 11, driver 15 are distinguished F-P scanning standard tool controller 14, are carried out to photon information capture card 16
Driving, light beam enter in detector 13 by F-P scanning standard tool 12, are collected by photon signal capture card 16, signal is transmitted
Onto computer 17.
The present invention relates to a kind of methods based on phonon crystal resonance technique amplification cornea scattered signal, its main feature is that sharp
With the principle of the intracavitary resonance signal amplification of phonon crystal, Lai Fang great brillouin scattering signal.
The present invention relates to a kind of methods based on phonon crystal resonance technique amplification cornea scattered signal, its main feature is that adopting
With continuous conductor laser: Coherence laser 01, convex lens 1, diaphragm 1, convex lens 24, convex lens three
5, phonon crystal device stage 06, cornea 07, convex lens 48, convex lens 59, diaphragm 2 10, convex lens 6 11, F-P are swept
Retouch the system dress of etalon 12, detector 13, F-P scanning monitor 14, driver 15, photon information capture card 16, computer 17
It sets.
The present invention relates to a kind of methods based on phonon crystal resonance technique amplification cornea scattered signal, its main feature is that adopting
With the continuous conductor laser of 532nm output wavelength: 1 brillouin scattering signal of Coherence laser, phonon crystal 6
Carry out intracavitary signal resonance amplification.
Signal amplification is carried out using phonon crystal resonance amplifying technique, the central principle of the system is using laser in phonon
Brillouin scattering signal is inspired on crystal objective table, in phonon crystal, is scattered to obtain special bandgap structure by Bragg,
This bandgap structure is dependent on the distance between resonant cavity, in the resonant cavity that brillouin scattering signal light is made by structure regulating
Transmission, and coupled signal amplification occurs in resonator cavity resonance, amplification is received by F-P scanning standard tool and photon receiver
Signal, and then measure and obtain scattering frequency shift signal, dielectric resilient modulus is finally calculated.
Claims (2)
1. it is a kind of based on phonon crystal resonance technique amplification cornea scattered signal method, feature the following steps are included:
Systematic procedure is continuous conductor laser: coherence laser (1) launches the laser beam that wavelength is 532nm, warp
Convex lens one (2), diaphragm one (3) are crossed, is filtered to light beam, laser beam convex lens two (4), convex lens three (5), phonon crystal
Device stage (6) focuses in cornea (7), excites brillouin scattering signal in focal position, signal is in phonon crystal
(6) resonance coupling amplifies in resonant cavity, and the signal of amplification prolongs direction of advance transmission, passes sequentially through convex lens four (8), convex lens five
(9), diaphragm (10), convex lens six (11), driver (15) is respectively to F-P scanning standard tool controller (14) and to photon information
Capture card (16) is driven, and light beam enters in detector (13) by F-P scanning standard tool (12), by photon signal capture card
(16) it collects, finally transfers signals on computer (17).
2. a kind of method based on phonon crystal resonance technique amplification cornea scattered signal as described in claim 1, special
Sign is: using the continuous conductor laser of 532nm output wavelength: Coherence laser (1) Brillouin scattering letter
Number, phonon crystal (6) carries out intracavitary signal resonance amplification, and is adopted using photon information capture card (16) to output signal
Collection.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113189054A (en) * | 2021-04-02 | 2021-07-30 | 南昌航空大学 | System device for non-invasive laser Brillouin skin elasticity measurement |
| CN114034768A (en) * | 2021-10-19 | 2022-02-11 | 三峡大学 | Elastic modulus measuring system and measuring method thereof |
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Application publication date: 20191022 |