CN112038874B - Self-pumping SBS pulse compression system of double pools - Google Patents
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- H—ELECTRICITY
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- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/005—Optical devices external to the laser cavity, specially adapted for lasers, e.g. for homogenisation of the beam or for manipulating laser pulses, e.g. pulse shaping
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/005—Optical devices external to the laser cavity, specially adapted for lasers, e.g. for homogenisation of the beam or for manipulating laser pulses, e.g. pulse shaping
- H01S3/0092—Nonlinear frequency conversion, e.g. second harmonic generation [SHG] or sum- or difference-frequency generation outside the laser cavity
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
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Abstract
The invention discloses a self-pumping SBS pulse compression system with double pools, which comprises: the tunable laser provides pump light, the pump light passes through the first quarter wave plate to be converted into circularly polarized light after polarization detection by the polaroid, and then is focused into the first medium pool to be used as first pump light after the pump light passes through the focusing lens; the compressed pulse after coupling reaction in the first medium pool is output from the front window mirror and passes through the first quarter wave plate again, the compressed pulse is converted into S-shaped linearly polarized light from circularly polarized light, reflected by the polarizing plate, converted into circularly polarized light again through the reflecting mirror and the second quarter wave plate, and enters the second medium pool through the beam shrinking structure to be used as second pumping light; and the feedback light which is transmitted back is provided by Fresnel reflection of the refractive index difference between the rear window mirror of the second medium pool and the medium material, and the feedback light contains a component with Brillouin frequency shift and serves as 'Stokes' seed light which is amplified and compressed by the second pump light transmitted forward and is output from the front window mirror of the second medium pool, converted into P-type linearly polarized light through a second quarter wave plate and output through a reflecting mirror and a polarizing plate.
Description
Technical Field
The invention relates to the field of nonlinear optics, in particular to a self-pumping SBS (Stimulated Brillouin Scattering, SBS) pulse compression system with double tanks.
Background
The hundred picosecond laser pulse plays an important role in Doppler laser wind-finding radar, space debris laser radar detection, laser Inertial Confinement Fusion (ICF), laser plasma generation, extreme ultraviolet lithography technology, various nonlinear optics and laser fine spectrum researches, activation of a photoconductive switch, thomson scattering laser radar diagnosis, stray loss of a long optical fiber, strong radiation proton source, electron acceleration, laser medical treatment and the like.
Based on its wide application, compressing a laser pulse on the order of nanoseconds to a laser pulse on the order of hundred picoseconds is of great and practical importance. The Stimulated Brillouin Scattering (SBS) pulse compression technology is an effective pulse width compression technology for compressing nanosecond long pulses to picosecond short pulses, has a simple structure and low manufacturing cost, and is a popular technical means and research direction in recent years.
Disclosure of Invention
The invention provides a self-pumping SBS pulse compression system with double pools, which provides a novel technical means for improving the stability of time for generating compression pulses while realizing the conversion of pulses from nanosecond level to picosecond level, and is described in detail below:
a dual cell self-pumped SBS pulse compression system, the system comprising:
The tunable laser provides pump light, the pump light passes through the first quarter wave plate to be converted into circularly polarized light after polarization detection by the polaroid, and then is focused into the first medium pool to be used as first pump light after the pump light passes through the focusing lens;
the compressed pulse after coupling reaction in the first medium pool is output from the front window mirror and passes through the first quarter wave plate again, the compressed pulse is converted into S-shaped linearly polarized light from circularly polarized light, reflected by the polarizing plate, converted into circularly polarized light again through the reflecting mirror and the second quarter wave plate, and enters the second medium pool through the beam shrinking structure to be used as second pumping light;
And the feedback light which is transmitted back is provided by Fresnel reflection of the refractive index difference between the rear window mirror of the second medium pool and the medium material, and the feedback light contains a component with Brillouin frequency shift and serves as 'Stokes' seed light which is amplified and compressed by the second pump light transmitted forward and is output from the front window mirror of the second medium pool, converted into P-type linearly polarized light through a second quarter wave plate and output through a reflecting mirror and a polarizing plate.
Wherein the tunable laser is continuous pulse, quasi-continuous pulse or pulse operation.
Further, the included angle between the polaroid and the horizontal direction is Brewster angle theta, the first medium pool is a focusing medium pool, and the second medium pool is a non-focusing medium pool.
The beam shrinking structure is a combination of a convex lens and a concave lens.
Further, the rear window mirror of the second medium pool wall is attached with a high-reflection film for increasing the reflectivity of the rear window mirror.
Wherein, the focal length f of the focusing lens is less than or equal to d+d 0+L1,
Wherein, d: mirror cell spacing; d 0: the thickness of a front window mirror of the medium pool; l 1: the focal medium pool length; the number of the L 1≥leff is two,L eff: effective interaction length; c: light velocity; n: brillouin medium refractive index.
Further, the system further comprises: a sampling structure, a sampling device and a sampling device,
The reflected light output by the first medium pool is used as the pumping light of the second medium pool, and after Stokes light is amplified and compressed by the subsequent pumping light, the output pulse waveform and energy are measured through a sampling structure after being output from a front window mirror of the second medium pool.
Wherein, the sampling structure includes: wedge plate, energy meter and photoelectric detector,
The wedge-shaped plate is arranged between the beam shrinking structure and the second medium pool and is used for sampling the light pulse of the second pumping light,
The waveform is recorded by an external oscilloscope after the waveform is received by the photoelectric detector; the sampled laser pulse energy is measured via the energy meter.
The laser pulse energy sampled by the energy meter is specifically:
the light pulse reflected at the first face of the wedge plate enters the energy meter, the sampling laser energy value E 0 is measured, and if the sampling rate of the wedge plate is k, the pumping light energy entering the second medium pool is E p＝(1-k)·E0.
The technical scheme provided by the invention has the beneficial effects that:
1. The invention provides a self-pumping SBS pulse compression system optical path structure with double pools for the first time;
2. similar to the conventional SBS reflected light, the pulse width of the reflected light from the pumping SBS is narrowed to some extent with respect to the pumping pulse width. On the other hand, since the self-pumped SBS originates from the feedback of the dielectric pool rear window mirror rather than the randomly distributed thermal noise, the stability of the time of generating the compression pulse is greatly improved compared with the compression pulse generated by the traditional scheme;
3. In addition, the technology for generating the high-energy hundred picosecond laser pulse has the characteristics of simple structure, convenient operation and the like, and can be further expanded to the application aspect of the high-energy pulse compression technology in the future.
Drawings
FIG. 1 is a schematic diagram of a dual cell self-pumped SBS pulse compression structure.
In the drawings, the list of components represented by the various numbers is as follows:
1: a laser; 2: a polarizing plate;
3: a first quarter wave plate; 4: a focusing lens;
5: a first media pool; 6: a reflecting mirror;
7: a second quarter wave plate; 8: a beam shrinking structure;
9: a second media pool; 10: sampling structure.
Wherein,
8-1: A convex lens; 8-2: a concave lens;
10-1: wedge plate; 10-2: a first energy meter;
10-3: a first photodetector; 10-4: a second energy meter;
10-5: and a second photodetector.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in further detail below.
The SBS technology is a very effective scheme for realizing high peak power hundred picosecond laser pulse output. In the early 80 s of the 20 th century, SBS technology was used to obtain high quantum efficiency, high gain phase conjugated light capable of repairing wavefront aberrations, and thus found great potential in application. The technology is widely applied to imaging distortion correction, laser nuclear fusion, fast and slow light technology, laser pulse compression, laser coherence beam combining and other aspects. Among them, the SBS compression technology has become one of the most active fields of scientific and technological research and development. The method utilizes the advantages of easy generation and amplification of nanosecond long pulse, sufficient energy extraction and the like, obtains high-energy pulse output in a laser amplification link, and then compresses the long pulse to picosecond order by utilizing SBS pulse compression characteristic at an output end so as to obtain high-energy short pulse high-power laser output.
In conventional SBS-based hundred picosecond laser pulse passive generation schemes, the use of a focusing lens tends to result in excessive laser energy near the focal plane, causing optical breakdown or permanent damage to the nonlinear medium, limiting further increases in laser energy. In addition, the current SBS pulse compression technology can basically compress pulses to picosecond level, but the method for obtaining high-energy ultrashort pulses with the energy less than 200ps is still limited by a plurality of limitations, and the device is too complex, has low stability, low pulse compression rate, low energy conversion efficiency and the like. Therefore, high-energy and more stable hundred picosecond pulse output can be realized by selecting proper laser pumping parameters, experimental device structural parameters and SBS compression media, so that a more reliable basis can be provided for realizing impact ignition.
In order to obtain hundred picosecond compression pulse output with time stability, the invention provides a novel double-tank self-pumping SBS pulse compression system. Similar to the conventional SBS reflected light, the pulse width of the reflected light from the pumping SBS is also narrowed to some extent with respect to the pumping pulse width.
On the other hand, since the self-pumped SBS originates from the feedback of the dielectric pool rear window mirror rather than the randomly distributed thermal noise, the time stability of the generated compression pulse is greatly improved compared with that of the conventional scheme. In addition, the technology for generating the high-energy hundred picosecond laser pulse has the characteristics of simple structure, convenient operation and the like, and can be further expanded to high-energy pulse compression in the future.
Referring to fig. 1, the dual cell self-pumped SBS pulse compression system includes: a tunable laser 1, a polarizer 2, a first quarter wave plate 3, a focusing lens 4, a first dielectric pool 5, a mirror 6, a second quarter wave plate 7, a beam shrinking structure 8, and a second dielectric pool 9. Wherein, the beam shrinking structure 8 is composed of a convex lens 8-1 and a concave lens 8-2.
The tunable laser 1 provides pump light for continuous pulse, quasi-continuous pulse or pulse operation, the pump light is subjected to polarization detection through the polarizer 2, then converted into circularly polarized light through the first quarter wave plate 3, and then focused into the first cuvette 5 through the focusing lens 4 to be used as first pump light.
Wherein the included angle between the polarizer 2 and the horizontal direction is Brewster angle θ. The first medium pool 5 is a focusing medium pool, in particular a brillouin medium pool, and nonlinear medium in the medium pool can be selected as perfluorinated amine series medium with low absorption, high load and short service life.
The modulation means of pulse width and waveform of the tunable laser as the pump light source, and the selection criteria of the medium are well known to those skilled in the art, and the embodiments of the present invention will not be described in detail.
Further, the compressed pulse after full coupling reaction in the first brillouin medium pool 5 is output from the front window mirror of the first medium pool 5 and passes through the first quarter wave plate 3 again, at this time, the compressed pulse is converted into S-shaped linear polarized light by circularly polarized light, reflected by the polarizing plate 2, converted into circularly polarized light again by the reflecting mirror 6 and the second quarter wave plate 7, enters the second medium pool 9 after passing through the beam shrinking structure 8 to be used as second pumping light, feedback light with back transmission is provided by fresnel reflection of refractive index difference between the rear window mirror of the second medium pool 9 and a medium material, and the component with brillouin frequency shift in the feedback light is output from the front window mirror of the second medium pool 9 after being amplified and compressed by the second pumping light with subsequent forward transmission, and is converted into P-shaped linear polarized light by the reflecting mirror 6 and the polarizing plate 2.
The specific process of generating the compression pulse after the full coupling reaction in the first brillouin medium pool 5 is as follows:
When strong light passes through a nonlinear medium, spontaneous Brillouin scattering is generated by medium molecular thermal fluctuation caused by random thermal noise, backward Stokes light generated by scattering is mutually coupled with pump light, the phonon grating is reinforced through an electrostriction effect, the reinforced phonon grating further increases the intensity of the Stokes light in turn, the two are mutually excited and mutually reinforced, and when the first pump light energy reaches an SBS threshold value, namely, when the Stokes light intensity reaches 1% of the pump light intensity, self-excited SBS is generated. In this process, the Stokes light continuously extracts the pump light energy in the backward transmission, so that the front edge of the Stokes light pulse is effectively amplified, and the rising edge becomes steep, thus forming a typical compressed pulse with a steep front edge.
Assume that: second pump light = Ap; fresnel reflection = r for the refractive index difference between the rear window mirror and the dielectric material; that is, feedback light=a P ·r, and a component having a brillouin shift in the feedback light serves as "Stokes" seed light=a P ·r·η.
Wherein: η is the Stokes energy duty cycle (i.e. the component in the second pump light spectral sideband that contains the brillouin shift), which can be expressed as:
Wherein Ω B is the brillouin shift of the medium, Γ is the brillouin linewidth, and f (v) is the spectral distribution of the second pump light.
The second medium pool 9 is an unfocused medium pool, and in particular, is a brillouin medium pool.
The reflected light output from the first medium cell 5 (i.e., the compressed pulse after SBS coupling reaction output from the front window mirror of the first medium cell 5) serves as the pump light for the second unfocused medium cell 9. The output pulse waveform and energy need to be measured through a sampling structure after the 'Stokes' light is amplified and compressed by the subsequent pumping light and then output from the front window mirror of the second medium pool 9. Meanwhile, the same information is required to be obtained for the pump source entering the second medium pool 9, i.e. the compressed pulse output from the first medium pool 5 and entering the second medium pool 9 after passing through the beam shrinking structure 8. Therefore, a wedge-shaped plate 10-1 is inserted between the beam shrinking structure 8 and the second medium pool 9 to sample the compressed pulse entering from the previous stage, namely the light pulse of the second stage pump Pu Guang, and the waveform is recorded by an external oscilloscope after the light pulse is received by the photoelectric detector 10-3 (or the photoelectric detector 10-5); measuring the sampled laser pulse energy via energy meter 10-2 (or energy meter 10-4); the other side of the wedge-shaped plate 10-1 can sample the reflected and output Stokes light pulse, which is similar to the measurement of the pump light parameter.
For the accuracy of the experiment, the above-mentioned energy meters 10-2, 10-4 and photodetectors 10-3, 10-5 are respectively identical after two samplings, and the two samplings are identical, and the embodiment of the present invention will be described by taking only one sample as an example.
Further, the method for acquiring the energy information specifically comprises the following steps:
The light pulse reflected at the first face of wedge plate 10-1 enters energy meter 10-2 and a sampled laser energy value E 0 can be measured. When the sampling rate of wedge plate 10-1 is determined to be k, the pumping light energy entering second medium pool 9 is E p＝(1-k)·E0.
Wherein, each parameter of the pumping light source laser is:
Pulse width t p; pump energy E p; a wavelength lambda; the aperture phi of the light beam.
In particular, one option is: the focal length f of the focusing lens 4 is less than or equal to d+d 0+L1 (d is the distance between the lens cells, d 0 is the thickness of a window lens in front of a medium cell, L 1 is the length of a medium cell of a focusing structure.)
Wherein L 1≥leff.
(L eff is the effective interaction length; c is the speed of light; n is the refractive index of the Brillouin medium, and t p is the pulse width of the pumping light. The cell length of the unfocused media cell L 2≥leff. )
Preferably, a combination of convex lens 8-1 and concave lens 8-2 is employed to reduce the spot area.
Further, a high-reflection film is attached to the rear window mirror on the wall of the second medium pool 9, so that the reflectivity of the rear window mirror is increased.
In summary, the present invention firstly proposes a dual-tank self-pumping SBS pulse compression system optical path structure; the conversion of pulses from nanosecond to picosecond levels is achieved. Which helps to improve the stability of the time for generating the compressed pulses. In addition, the system has simple structure and convenient operation, and can be further expanded to the application aspect of the high-energy pulse compression technology in the future.
The embodiment of the invention does not limit the types of other devices except the types of the devices, so long as the devices can complete the functions.
Those skilled in the art will appreciate that the drawings are schematic representations of only one preferred embodiment, and that the above-described embodiment numbers are merely for illustration purposes and do not represent advantages or disadvantages of the embodiments.
The foregoing description of the preferred embodiments of the invention is not intended to limit the invention to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the invention are intended to be included within the scope of the invention.
Claims (9)
1. A dual cell self-pumped SBS pulse compression system, the system comprising:
The tunable laser provides pump light, the pump light passes through the first quarter wave plate to be converted into circularly polarized light after polarization detection by the polaroid, and then is focused into the first medium pool to be used as first pump light after the pump light passes through the focusing lens;
the compressed pulse after coupling reaction in the first medium pool is output from the front window mirror and passes through the first quarter wave plate again, the compressed pulse is converted into S-shaped linearly polarized light from circularly polarized light, reflected by the polarizing plate, converted into circularly polarized light again through the reflecting mirror and the second quarter wave plate, and enters the second medium pool through the beam shrinking structure to be used as second pumping light;
And the feedback light which is transmitted back is provided by Fresnel reflection of the refractive index difference between the rear window mirror of the second medium pool and the medium material, and the feedback light contains a component with Brillouin frequency shift and serves as 'Stokes' seed light which is amplified and compressed by the second pump light transmitted forward and is output from the front window mirror of the second medium pool, converted into P-type linearly polarized light through a second quarter wave plate and output through a reflecting mirror and a polarizing plate.
2. The dual cell self-pumped SBS pulse compression system according to claim 1, wherein the tunable laser is continuously pulsed, quasi-continuously pulsed or pulsed.
3. The dual cell self-pumped SBS pulse compression system of claim 1, wherein the polarizer and horizontal angle is brewster angle θ, the first medium cell is a focused medium cell, and the second medium cell is a non-focused medium cell.
4. The dual cell self-pumped SBS pulse compression system of claim 1, wherein the beam shrinking structure is a combination of convex and concave lenses.
5. The dual cell self-pumped SBS pulse compression system of claim 1, wherein said second dielectric cell wall rear window mirror is highly reflective for increasing rear window mirror reflectivity.
6. A dual cell self-pumped SBS pulse compression system as in claim 3, wherein the focal length f of the focusing lens is less than or equal to d+d 0+L1,
Wherein, d: mirror cell spacing; d 0: the thickness of a front window mirror of the medium pool; l 1: the focal medium pool length; the number of the L 1≥leff is two,L eff: effective interaction length; c: light velocity; n: brillouin medium refractive index.
7. The dual cell self-pumped SBS pulse compression system of claim 1, further comprising: a sampling structure, a sampling device and a sampling device,
The reflected light output by the first medium pool is used as the pumping light of the second medium pool, and after Stokes light is amplified and compressed by the subsequent pumping light, the output pulse waveform and energy are measured through a sampling structure after being output from a front window mirror of the second medium pool.
8. The dual cell self-pumped SBS pulse compression system of claim 7, wherein said sampling structure comprises: wedge plate, energy meter and photoelectric detector,
The wedge-shaped plate is arranged between the beam shrinking structure and the second medium pool and is used for sampling the light pulse of the second pumping light,
The waveform is recorded by an external oscilloscope after the waveform is received by the photoelectric detector; the sampled laser pulse energy is measured via the energy meter.
9. The dual cell self-pumped SBS pulse compression system according to claim 8, wherein the energy meter-sampled laser pulse energy is specifically:
the light pulse reflected at the first face of the wedge plate enters the energy meter, the sampling laser energy value E 0 is measured, and if the sampling rate of the wedge plate is k, the pumping light energy entering the second medium pool is E p＝(1-k)·E0.
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Families Citing this family (2)
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| CN114389138B (en) * | 2022-01-13 | 2023-07-18 | 河北工业大学 | Pulse width compressor based on stimulated Raman scattering secondary amplification structure |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1528644A2 (en) * | 2003-10-30 | 2005-05-04 | Metal Improvement Company, LLC. | Stimulated brillouin scattering mirror system, laser system and amplifying method |
| CN1740889A (en) * | 2005-09-22 | 2006-03-01 | 哈尔滨工业大学 | Method for obtaining flat-topped light beam utilizing secondary stimulated Brillouin scattering light amplitude limiting |
| CN101504505A (en) * | 2009-03-16 | 2009-08-12 | 哈尔滨工业大学 | Modulation-eliminating stimulated Brillouin scattering laser pulse compression apparatus |
| CN101887205A (en) * | 2010-03-30 | 2010-11-17 | 南昌航空大学 | Method for amplifying two-cell Brillouin scattering by controlling polarization state |
| CN107121871A (en) * | 2017-06-02 | 2017-09-01 | 中国科学院光电研究院 | A kind of stimulated Brillouin scattering phase conjugate mirror list pool device |
| CN209929677U (en) * | 2019-07-29 | 2020-01-10 | 长春理工大学 | Pulse width adjustable short pulse laser |
| CN212626499U (en) * | 2020-08-03 | 2021-02-26 | 河北工业大学 | Self-pumping SBS pulse compression system of twin-pool |
-
2020
- 2020-08-03 CN CN202010766057.8A patent/CN112038874B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1528644A2 (en) * | 2003-10-30 | 2005-05-04 | Metal Improvement Company, LLC. | Stimulated brillouin scattering mirror system, laser system and amplifying method |
| CN1740889A (en) * | 2005-09-22 | 2006-03-01 | 哈尔滨工业大学 | Method for obtaining flat-topped light beam utilizing secondary stimulated Brillouin scattering light amplitude limiting |
| CN101504505A (en) * | 2009-03-16 | 2009-08-12 | 哈尔滨工业大学 | Modulation-eliminating stimulated Brillouin scattering laser pulse compression apparatus |
| CN101887205A (en) * | 2010-03-30 | 2010-11-17 | 南昌航空大学 | Method for amplifying two-cell Brillouin scattering by controlling polarization state |
| CN107121871A (en) * | 2017-06-02 | 2017-09-01 | 中国科学院光电研究院 | A kind of stimulated Brillouin scattering phase conjugate mirror list pool device |
| CN209929677U (en) * | 2019-07-29 | 2020-01-10 | 长春理工大学 | Pulse width adjustable short pulse laser |
| CN212626499U (en) * | 2020-08-03 | 2021-02-26 | 河北工业大学 | Self-pumping SBS pulse compression system of twin-pool |
Non-Patent Citations (2)
| Title |
|---|
| 利用受激布里渊散射获得皮秒激光脉冲;王超, 吕志伟, 何伟明;强激光与粒子束;20031225(12) * |
| 张岩.受激布里渊散射脉冲压缩装置的实验研究. * |
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