CN110702209A - Device and method for measuring stimulated Brillouin scattering process based on cavity optomechanics system - Google Patents
Device and method for measuring stimulated Brillouin scattering process based on cavity optomechanics system Download PDFInfo
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- CN110702209A CN110702209A CN201910992718.6A CN201910992718A CN110702209A CN 110702209 A CN110702209 A CN 110702209A CN 201910992718 A CN201910992718 A CN 201910992718A CN 110702209 A CN110702209 A CN 110702209A
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- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
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Abstract
The invention provides a device and a method for measuring a stimulated Brillouin scattering process based on a cavity optomechanics system, wherein an underwater stimulated Brillouin scattering signal generation system is utilized to be focused into the cavity optomechanics system, the cavity optomechanics system is adopted to measure the change condition of the internal pressure of a medium when stimulated Brillouin scattering occurs, so that the change condition of the generated stimulated Brillouin scattering pressure is obtained, the change form of the acoustic wave field structure in the medium can be calculated, the physical mechanism in the stimulated Brillouin scattering medium is finally obtained through analysis, and the accuracy of the conventional stimulated Brillouin scattering modulation model is verified. The invention has the advantages that: the refractive index is changed by adjusting the pump coupling field, the incident light energy is changed, so that the dispersion near the refractive index is changed, in the process, the mechanical oscillator measures the medium coupling quantity, the optical pressure is generated due to the nonlinear effect, so that the corresponding physical dispersion quantity is introduced, and the solution is carried out through a perturbation equation.
Description
Technical Field
The invention belongs to the field of optics, and particularly relates to a device and a method for measuring a stimulated Brillouin scattering process based on a cavity optomechanics system.
Background
At present, the physical mechanism research of stimulated brillouin scattering basically centers on solving a numerical solution of a simplified nonlinear coupled wave equation set and establishing a related mathematical model for analysis and explanation, and experimental research measurement of a physical mechanism of acoustic field change in stimulated brillouin scattering in water is not directly observed when stimulated brillouin scattering is generated, so that theoretical explanation of the physical mechanism of the generated stimulated brillouin scattering is facilitated, but reports of related mechanisms of the method are few, and the experimental direct measurement result of the acoustic field change in a medium is obtained.
The device for directly detecting the change of the internal pressure of the stimulated Brillouin scattering medium mainly generates a series of nonlinear changes in an acoustic wave field in the medium through the stimulated Brillouin during generation, and the changes cause the internal pressure of the medium to be disturbed.
Disclosure of Invention
The invention aims to provide a device and a method for measuring stimulated Brillouin scattering process based on a cavity optomechanics system. But the cavity optomechanics system can measure the change parameters of weak optical pressure, so that the pressure change in the stimulated Brillouin scattering signal generated by experimental measurement becomes possible, the change condition of the refractive index in the medium can be further deduced, and experimental guidance is provided for theoretical simulation.
By utilizing the method, the invention provides a device for measuring the stimulated Brillouin scattering process based on a cavity optomechanics system, and the device for directly detecting the change of the internal pressure of the generated stimulated Brillouin scattering medium comprises a seed injection pulse Nd: YAG laser, lambda/2 wave plate, convex lens I, diaphragm I, convex lens II, polarization beam splitter prism, lambda/4 wave plate, convex lens III, cavity optical mechanics system, computer, holophote, reflected beam passes through convex lens, diaphragm II, concave lens, F-P etalon, ICCD, system device of the computer; the connection mode is seed type pulse Nd: the YAG laser is sequentially connected with a lambda/wave plate, a convex lens I, a diaphragm I, a convex lens II, a polarization beam splitter prism, a lambda/wave plate, a convex lens III, a cavity optical mechanics system and a computer, the polarization beam splitter prism is also sequentially connected with a holophote, a reflected light beam passes through the convex lens, the diaphragm II, the concave lens, an F-P etalon, an ICCD, the computer and a DG535, and seed type pulse Nd: YAG laser and DG 535.
① injecting pulse Nd from seeds, wherein the laser beam with wavelength of 532nm is emitted by YAG laser, the vertical beam is polarized to be horizontal through lambda/2 wave plate, and passes through convex lens I, diaphragm I and convex lens II in sequence to filter the beam, and passes through polarization beam splitter prism to be highly transparent and highly reflective horizontally, the horizontal polarized beam passes through lambda/4 wave plate, convex lens III focuses the beam into cavity optomechanics system, which is connected with computer;
② the light beam excites the stimulated Brillouin scattering signal to delay and transmit at the focus position, and passes through the convex lens three, lambda/4 wave plate, the polarizing beam splitter prism, and reaches the total reflector, the reflected light beam passes through the collimating system composed of convex lens, diaphragm two, concave lens, and collimates the reflected light beam, then passes through the F-P etalon, the final signal is transmitted to ICCD, the reflected light spectrum is displayed on the computer, the device is connected with the computer by DG535, and the gate width of the received signal is controlled.
Further, the injection of the pulse Nd: YAG laser employs a seed injection pulse Nd of 532nm output wavelength: YAG laser focuses on a cavity optomechanical system to generate a stimulated Brillouin scattering signal, an acoustic wave field inside a medium changes, the cavity optomechanical system can measure weak mechanical change conditions inside the medium, and the change conditions of medium internal pressure during generation of stimulated Brillouin scattering are analyzed through information acquisition to obtain an internal physical mechanism for generating the stimulated Brillouin scattering.
The working principle is as follows: the method comprises the steps of utilizing an underwater stimulated Brillouin scattering signal generation system to focus the underwater stimulated Brillouin scattering signal into a cavity optomechanics system, measuring the change condition of medium internal pressure when stimulated Brillouin scattering occurs by adopting the cavity optomechanics system to obtain the change condition of the generated stimulated Brillouin scattering pressure, calculating the change form of a medium internal sound wave field structure, finally analyzing the physical mechanism of the stimulated Brillouin scattering medium, and verifying the accuracy of the existing stimulated Brillouin scattering modulation model.
The cavity optomechanical system is formed by coupling an optical resonant cavity and a mechanical vibrator, wherein the mechanical vibrator is forced to vibrate under the action of optical pressure, the mechanical motion state of the mechanical vibrator is connected with the property of optical intensity through the optical pressure, and in the cavity optomechanical system, the movement of the mechanical vibrator can influence the effective length of an optical cavity, so that the light intensity distribution in the cavity and the vibration mode in the cavity are changed along with the position change of the vibrator. And then the change of the internal light pressure is measured and obtained, and the change trend of the refractive index is further solved.
The invention has the advantages that: the method is characterized in that a stimulated Brillouin scattering signal generation system device in water is utilized, a cavity optomechanics system is often used for measuring a precision instrument and measuring series parameters such as quantum parameters, a pump coupling field is adjusted to enable a refractive index to change, incident light energy is changed to enable dispersion near the refractive index to change, in the process, a mechanical oscillator measures medium coupling quantity, and due to nonlinear effect, light pressure is generated to introduce corresponding physical dispersion quantity, and solution is carried out through a perturbation equation. The change structure of the acoustic wave field in the medium is further obtained by combining the pressure change condition when the cavity optomechanics system measures and generates the stimulated Brillouin scattering signal, and the measurement result of the experimental device has potential application value in the analysis of solving the problem of the existing stimulated Brillouin scattering internal physical mechanism. The change condition of the internal pressure of the medium is detected by utilizing a cavity optomechanics system to accurately generate the stimulated Brillouin scattering, and the change condition of the acoustic wave field structure in the medium is finally analyzed and obtained.
Drawings
Fig. 1 is a schematic diagram of the present invention.
Seed pulse Nd shown in fig. 1: YAG laser (01), a lambda/2 wave plate (02), a convex lens I (03), a diaphragm I (04), a convex lens II (05), a polarization beam splitter prism (06), a lambda/4 wave plate (07), a convex lens III (08), a cavity optical mechanics system (09), a computer (10), a holophote (11), a reflected light beam, a convex lens (12), a diaphragm II (13), a concave lens (14), an F-P etalon (15), an ICCD (16), a computer (17) and a DG535 (18).
Detailed Description
Example 1
Seed injection pulse Nd: YAG laser (01) emits laser beam with wavelength of 532nm, vertical beam is polarized to be horizontal through a lambda/2 wave plate (02), and passes through a convex lens I (03), a diaphragm I (04) and a convex lens II (05) in sequence to filter the laser beam, the horizontal high transmission and the vertical high reflection are carried out through a polarization beam splitter prism (06), the horizontal polarization beam passes through a lambda/4 wave plate (07), a convex lens III (08) focuses the laser beam into a cavity optomechanical system (09), the cavity optomechanical system (09) is connected with a computer (10), the laser beam excites stimulated Brillouin scattering signal at a focus position to be transmitted after being delayed and passes through a convex lens III (08) and a lambda/4 wave plate (07) in sequence, the polarization beam splitter prism (06) reaches a total reflection mirror (11), and a reflected light beam passes through a collimation system consisting of a convex lens (12), a diaphragm II (13) and a concave lens (14), the reflected beam is collimated and then passed through an F-P etalon (15), the resulting signal is transmitted to an ICCD (16), the reflected spectrum is displayed on a computer (17), and the device is connected to the computer (17) by a DG535(18) to control the gate width of the received signal.
The invention relates to a device for measuring stimulated Brillouin scattering process based on a cavity optomechanics system, which is characterized in that the cavity optomechanics system is utilized to directly present a medium internal pressure change structure when a stimulated Brillouin scattering light signal is generated.
The invention relates to a device for measuring stimulated Brillouin scattering process based on a cavity optomechanics system, which is characterized in that a seed injection pulse Nd: YAG laser (01) emits laser beam with wavelength of 532nm, vertical beam is polarized to be horizontal through a lambda/2 wave plate (02), and passes through a convex lens I (03), a diaphragm I (04) and a convex lens II (05) in sequence to filter the laser beam, the horizontal high transmission and the vertical high reflection are carried out through a polarization beam splitter prism (06), the horizontal polarization beam passes through a lambda/4 wave plate (07), a convex lens III (08) focuses the laser beam into a cavity optomechanical system (09), the cavity optomechanical system (09) is connected with a computer (10), the laser beam excites stimulated Brillouin scattering signal at a focus position to be transmitted after being delayed and passes through a convex lens III (08) and a lambda/4 wave plate (07) in sequence, the polarization beam splitter prism (06) reaches a total reflection mirror (11), and a reflected light beam passes through a collimation system consisting of the convex lens (12), the diaphragm II (13) and a concave lens (14), the reflected beam is collimated and then passed through an F-P etalon (15) and the resulting signal is transmitted to an ICCD (16) where the reflected spectrum is displayed on a computer (17).
The invention relates to a device for measuring stimulated Brillouin scattering process based on a cavity optomechanics system, which is characterized in that a seed injection pulse Nd with 532nm output wavelength is adopted: YAG laser (01) focuses to a cavity optomechanical system to generate a stimulated Brillouin scattering signal, and the cavity optomechanical system is used for measuring pressure change to obtain a medium internal acoustic field change structure.
Without being limited thereto, any changes or substitutions that are not thought of through the inventive work should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope defined by the claims.
Claims (3)
1. Device based on cavity optomechanics system measures stimulated brillouin scattering process, its characterized in that includes seed formula pulse Nd: YAG laser (01), lambda/2 wave plate (02), convex lens I (03), diaphragm I (04), convex lens II (05), polarization beam splitter prism (06), lambda/4 wave plate (07), convex lens III (08), cavity optical mechanics system (09), computer (10), holophote (11), reflected light beam via convex lens (12), diaphragm II (13), concave lens (14), F-P etalon (15), ICCD (16), computer (17) and DG535 (18); seed type pulse Nd: YAG laser instrument (01) connects gradually lambda/2 wave plate (02), convex lens one (03), diaphragm one (04), convex lens two (05), polarization beam splitter prism (06), lambda/4 wave plate (07), convex lens three (08), chamber optomechanics system (09), computer (10), polarization beam splitter prism (6) still connects gradually holophote (11), the reflected light beam is through convex lens (12), diaphragm two (13), concave lens (14), F-P etalon (15), ICCD (16), computer (17), DG535(18), seed type pulse Nd: YAG laser (01) and DG535(18) are connected.
2. The method for measuring the stimulated Brillouin scattering process based on the cavity optomechanics system is characterized by comprising the following specific steps of injecting pulse Nd: YAG laser (01) emits laser beam with wavelength of 532nm, vertical beam is polarized to be horizontal through a lambda/2 wave plate (02), and passes through a convex lens I (03), a diaphragm I (04) and a convex lens II (05) in sequence to filter the laser beam, the horizontal high transmission and the vertical high reflection are carried out through a polarization beam splitter prism (06), the horizontal polarization beam passes through a lambda/4 wave plate (07), a convex lens III (08) focuses the laser beam into a cavity optomechanical system (09), the cavity optomechanical system (09) is connected with a computer (10), the laser beam excites stimulated Brillouin scattering signal at a focus position to be transmitted after being delayed and passes through a convex lens III (08) and a lambda/4 wave plate (07) in sequence, the polarization beam splitter prism (06) reaches a total reflection mirror (11), and a reflected light beam passes through a collimation system consisting of a convex lens (12), a diaphragm II (13) and a concave lens (14), the reflected beam is collimated and then passed through an F-P etalon (15), the resulting signal is transmitted to an ICCD (16), the reflected spectrum is displayed on a computer (17), and the device is connected to the computer (17) by a DG535(18) to control the gate width of the received signal.
3. The device for measuring stimulated brillouin scattering process based on cavity optomechanics system according to claim 1, wherein: a seed injection pulse Nd of 532nm output wavelength was used: YAG laser (01) focuses on a cavity optomechanical system (09) to generate a stimulated Brillouin scattering signal, an acoustic wave field inside a medium changes, the cavity optomechanical system can measure a weak mechanical change condition inside the medium, and the change condition of the internal pressure of the medium during the generation of the stimulated Brillouin scattering is analyzed through information acquisition to obtain an internal physical mechanism for generating the stimulated Brillouin scattering.
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1740817A (en) * | 2005-09-22 | 2006-03-01 | 哈尔滨工程大学 | Stimulated Brillouin scattering laser radar underwater hidden substance detecting system and method |
| US20150288135A1 (en) * | 2014-04-02 | 2015-10-08 | Honeywell International Inc. | Systems and methods for stabilized stimulated brillouin scattering lasers with ultra-low phase noise |
| US20150377656A1 (en) * | 2013-03-29 | 2015-12-31 | Filippo Bastianini | Apparatus for interrogating distributed stimulated brillouin scattering optical fibre sensors using a quickly tuneable brillouin ring laser |
| CN107764741A (en) * | 2017-09-28 | 2018-03-06 | 南昌航空大学 | A kind of detection means for integrating stimulated Brillouin scattering and optical coherence elastogram |
| CN107907507A (en) * | 2017-09-28 | 2018-04-13 | 南昌航空大学 | A kind of lubricating oil elasticity modulus detection method based on Brillouin scattering spectrum |
| CN109443698A (en) * | 2018-10-12 | 2019-03-08 | 南昌航空大学 | A kind of system and device of direct imaging stimulated Brillouin scattering transient grating structure |
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- 2019-10-18 CN CN201910992718.6A patent/CN110702209A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1740817A (en) * | 2005-09-22 | 2006-03-01 | 哈尔滨工程大学 | Stimulated Brillouin scattering laser radar underwater hidden substance detecting system and method |
| US20150377656A1 (en) * | 2013-03-29 | 2015-12-31 | Filippo Bastianini | Apparatus for interrogating distributed stimulated brillouin scattering optical fibre sensors using a quickly tuneable brillouin ring laser |
| US20150288135A1 (en) * | 2014-04-02 | 2015-10-08 | Honeywell International Inc. | Systems and methods for stabilized stimulated brillouin scattering lasers with ultra-low phase noise |
| CN107764741A (en) * | 2017-09-28 | 2018-03-06 | 南昌航空大学 | A kind of detection means for integrating stimulated Brillouin scattering and optical coherence elastogram |
| CN107907507A (en) * | 2017-09-28 | 2018-04-13 | 南昌航空大学 | A kind of lubricating oil elasticity modulus detection method based on Brillouin scattering spectrum |
| CN109443698A (en) * | 2018-10-12 | 2019-03-08 | 南昌航空大学 | A kind of system and device of direct imaging stimulated Brillouin scattering transient grating structure |
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