CN108963744A - A kind of variable impulse width high energy nanosecoud pulse laser for the detection of laser blast wave binding force - Google Patents
A kind of variable impulse width high energy nanosecoud pulse laser for the detection of laser blast wave binding force Download PDFInfo
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- CN108963744A CN108963744A CN201810997038.9A CN201810997038A CN108963744A CN 108963744 A CN108963744 A CN 108963744A CN 201810997038 A CN201810997038 A CN 201810997038A CN 108963744 A CN108963744 A CN 108963744A
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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
- H01S3/05—Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
- H01S3/06—Construction or shape of active medium
- H01S3/063—Waveguide lasers, i.e. whereby the dimensions of the waveguide are of the order of the light wavelength
- H01S3/067—Fibre lasers
- H01S3/06754—Fibre amplifiers
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/22—Details, e.g. general constructional or apparatus details
- G01N29/24—Probes
- G01N29/2412—Probes using the magnetostrictive properties of the material to be examined, e.g. electromagnetic acoustic transducers [EMAT]
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/22—Details, e.g. general constructional or apparatus details
- G01N29/24—Probes
- G01N29/2418—Probes using optoacoustic interaction with the material, e.g. laser radiation, photoacoustics
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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
- H01S3/10—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
- H01S3/10007—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating in optical amplifiers
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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
- H01S3/10—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
- H01S3/102—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating by controlling the active medium, e.g. by controlling the processes or apparatus for excitation
- H01S3/1022—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating by controlling the active medium, e.g. by controlling the processes or apparatus for excitation by controlling the optical pumping
- H01S3/1024—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating by controlling the active medium, e.g. by controlling the processes or apparatus for excitation by controlling the optical pumping for pulse generation
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- Optics & Photonics (AREA)
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- Laser Beam Processing (AREA)
Abstract
The present invention relates to laser technology application fields, in particular a kind of variable impulse width high energy nanosecoud pulse laser for the detection of laser blast wave binding force, is made of CW optical fiber laser, EOM modulator, waveform generator, YLF+Glass solid amplifier, integrated controller.Laser forms NP optical fiber seed source using CW optical fiber laser and EOM modulator, triggers low energy wide pulse width ps pulsed laser and ns pulsed laser beam；It is utilized respectively waveform generator, YLF+Glass solid amplifier and slicing processing and multilevel energy amplification is carried out to pulse laser beam；By integrated controller Collaborative Control CW optical fiber laser, EOM modulator, waveform generator, YLF+Glass solid amplifier, wide pulse width high-energy ps pulsed laser and ns pulsed laser is excited.It is entire laser control precision height, function modoularization, system integration, versatile, it can be used for different depth bonding carbon fibre composite and the isostructural interface binding power of different-thickness coating/thin film detect.
Description
Technical field
The present invention relates to laser technology application field, specially a kind of variable arteries and veins for the detection of laser blast wave binding force
Wide high energy nanosecoud pulse laser.
Background technique
Laser blast wave binding force detection technique (Laser bond Inspection, LBI), refers to close using high power
Spend nanosecond pulse irradiation on the surface of the material, the absorption protective layer (aluminium foil, black tape etc.) that material surface pastes absorbs laser energy
Explosive vaporization evaporation occurs afterwards, forms high temperature and pressure plasma, plasma continues to absorb laser energy expansion, in water flow
Effect of contraction under formed to material internal propagate high-pressure shocking wave；Shock wave is propagated first in the form of compressional wave, but is being carried on the back
Face reflection after be changed into tensile wave, when tensile wave stress value be more than material interface binding force, i.e., spalling can occur at this,
To judge whether interface binding power meets design standard according to tensile wave stress value and spalling.The technology both can detecte
The bonding force of carbon fibre composite interlayer can also detect the interface binding power of coating/thin film.
Existed according to solid interior laser blast wave propagation law it is found that after the shock reflection of distinct pulse widths induced with laser
Maximum tensile stress is formed at different depth, so laser pulse width directly determines the interface of laser blast wave binding force detection
It sets.Therefore, demand is detected to meet different depth bonding composites and different-thickness coating/thin film binding force, needs to utilize
Distinct pulse widths pulse laser is detected.It proposes to pass through using traditional local oscillator level structure in 2005/0120803 patent of U.S. US
It adjusts lamp pumping power and realizes that laser pulse width is adjustable, but laser pulse width adjustable extent very little under this method, and energy dissipation is larger；
Therefore, it is badly in need of inventing a kind of high energy nanosecoud pulse laser of adjustable pulse width.
Summary of the invention
The purpose of the present invention is to provide a kind of variable impulse width high energy nanosecond arteries and veins for the detection of laser blast wave binding force
Laser is rushed, laser control precision height, function modoularization, the system integration are, it can be achieved that laser pulse width, waveform, energy can
It adjusts, can be used for different depth bonding composites and the isostructural interface binding power detection of different-thickness coating/thin film, to solve
The problems mentioned above in the background art.
To achieve the above object, the invention provides the following technical scheme:
A kind of variable impulse width high energy nanosecoud pulse laser for the detection of laser blast wave binding force, including CW optical fiber swash
Light device, EOM modulator, waveform generator, YLF+Glass solid amplifier and integrated controller, it is characterised in that: the CW light
Fibre laser and EOM modulator collectively constitute NP optical fiber seed source, the integrated controller by control bus respectively with CW light
Fibre laser, EOM modulator, waveform generator are connected with YLF+Glass solid amplifier, and concrete operations are as follows:
1) NP optical fiber seed source is formed using CW optical fiber laser and EOM modulator, can trigger low energy wide pulse width nanosecond
Pulse laser beam；
2) slicing processing is carried out to pulse laser beam using waveform generator, adjusts the time waveform of pulse laser beam；
3) multilevel energy amplification is carried out to pulse laser beam using YLF+Glass solid amplifier, adjusts pulse laser beam
Energy size；
4) solid to CW optical fiber laser, EOM modulator, waveform generator, YLF+Glass by laser integrated controller
Body amplifier carries out Collaborative Control, realizes the output of wide pulse width high-energy ps pulsed laser and ns pulsed laser beam.
The features of the present invention is as follows:
1) laser is by CW optical fiber laser, EOM modulator, waveform generator, YLF+Glass solid amplifier, synthesis
Controller composition.
2) CW optical fiber laser and EOM modulator form NP optical fiber seed source, and triggering low energy wide pulse width nanosecond pulse swashs
Light beam.
3) waveform generator, YLF+Glass solid amplifier are utilized respectively, slicing processing and is carried out to pulse laser beam more
Grade energy amplification.
4) laser integrated controller Collaborative Control CW optical fiber laser, EOM modulator, waveform generator, YLF+Glass
Solid amplifier excites wide pulse width high-energy ps pulsed laser and ns pulsed laser.
The invention has the following advantages:
A kind of turnable pulse width high-energy laser for the detection of laser blast wave binding force of the present invention is highly integrated
CW optical fiber laser, EOM modulator, waveform generator, YLF+Glass solid amplifier four module, and pass through comprehensive control
Device processed carries out Collaborative Control, controls precision height, function modoularization, system integration；Wide pulse width pulse laser can be excited, and to wave
Shape, energy carry out slicing and amplification, and the final wide pulse width high-energy ps pulsed laser and ns pulsed laser that obtains is, it can be achieved that laser pulse width, waveform, energy
It measures adjustable, can be used for different depth bonding composites and the isostructural interface binding power detection of different-thickness coating/thin film.
Detailed description of the invention
Fig. 1 is laser structure composition schematic diagram of the invention.
1 it is CW optical fiber laser, 2 be EOM modulator, 3 be waveform generator, 4 be YLF+Glass solid amplifier, 5 is
Integrated controller, 6 are NP optical fiber seed source.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Referring to Fig. 1, the present invention provides a kind of technical solution:
A kind of variable impulse width high energy nanosecoud pulse laser for the detection of laser blast wave binding force, including CW optical fiber swash
Light device 1, EOM modulator 2, waveform generator 3, YLF+Glass solid amplifier 4 and integrated controller 5, CW optical fiber laser 1
Collectively constitute NP optical fiber seed source 6 with EOM modulator 2, integrated controller 5 by control circuit respectively with CW optical fiber laser 1,
EOM modulator 2, waveform generator 3 and YLF+Glass solid amplifier 4 connect, concrete operating principle:
1) NP optical fiber seed source 6 is formed using CW optical fiber laser 1 and EOM modulator 2, can trigger low energy wide pulse width and receives
Pulse per second (PPS) laser beam；
2) slicing processing is carried out to pulse laser beam using waveform generator 3, adjusts the time waveform of pulse laser beam；
3) multilevel energy amplification is carried out to pulse laser beam using YLF+Glass solid amplifier 4, adjusts pulse laser beam
Energy size；
4) by laser integrated controller 5 to CW optical fiber laser 1, EOM modulator 2, waveform generator 3, YLF+
Glass solid amplifier 4 carries out Collaborative Control, realizes the output of wide pulse width high-energy ps pulsed laser and ns pulsed laser beam.
Feature advantage: by integrated controller by CW optical fiber laser, EOM modulator, waveform generator, YLF+Glass
Solid amplifier four module is integrated to turn to a kind of wide pulse width high-energy nanosecoud pulse laser, can excite wide pulse width low energy arteries and veins
Seed light is rushed, and slicing and amplification are carried out to waveform, energy, it is final to obtain wide pulse width high-energy ps pulsed laser and ns pulsed laser beam.Entirely
It is laser control precision height, function modoularization, system integration, versatile, can be used for different depth bonding composites and
The isostructural interface binding power detection of different-thickness coating/thin film.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (1)
1. a kind of variable impulse width high energy nanosecoud pulse laser for the detection of laser blast wave binding force, including CW optical-fiber laser
Device, EOM modulator, waveform generator, YLF+Glass solid amplifier and integrated controller, it is characterised in that: the CW optical fiber
Laser and EOM modulator collectively constitute NP optical fiber seed source, the integrated controller by control bus respectively with CW optical fiber
Laser, EOM modulator, waveform generator are connected with YLF+Glass solid amplifier, and the specific working principle is as follows:
1) NP optical fiber seed source is formed using CW optical fiber laser and EOM modulator, can trigger the nanosecond pulse of low energy wide pulse width
Laser beam；
2) slicing processing is carried out to pulse laser beam using waveform generator, adjusts the time waveform of pulse laser beam；
3) multilevel energy amplification is carried out to pulse laser beam using YLF+Glass solid amplifier, adjusts the energy of pulse laser beam
Measure size；
4) CW optical fiber laser, EOM modulator, waveform generator, YLF+Glass solid are put by laser integrated controller
Big device carries out Collaborative Control, realizes the output of wide pulse width high-energy ps pulsed laser and ns pulsed laser beam.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810997038.9A CN108963744A (en) | 2018-08-29 | 2018-08-29 | A kind of variable impulse width high energy nanosecoud pulse laser for the detection of laser blast wave binding force |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810997038.9A CN108963744A (en) | 2018-08-29 | 2018-08-29 | A kind of variable impulse width high energy nanosecoud pulse laser for the detection of laser blast wave binding force |
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| CN108963744A true CN108963744A (en) | 2018-12-07 |
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|---|---|---|---|
| CN201810997038.9A Pending CN108963744A (en) | 2018-08-29 | 2018-08-29 | A kind of variable impulse width high energy nanosecoud pulse laser for the detection of laser blast wave binding force |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112697698A (en) * | 2020-11-27 | 2021-04-23 | 中国人民解放军空军工程大学 | Double-beam synergistic laser shock wave binding force detection device and method |
Citations (5)
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|---|---|---|---|---|
| US7099360B2 (en) * | 2003-02-03 | 2006-08-29 | Intel Corporation | Method and apparatus to generate and monitor optical signals and control power levels thereof in a planar lightwave circuit |
| CN204256167U (en) * | 2014-09-09 | 2015-04-08 | 航天恒星科技有限公司 | A kind of Laser Detecting Set based on pulse modulation technology |
| CN206412629U (en) * | 2017-01-22 | 2017-08-15 | 昆山华辰光电科技有限公司 | The MOPA optical fiber lasers of adjustable pulse width |
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| CN107492781A (en) * | 2017-09-30 | 2017-12-19 | 长春理工大学 | 1.7 mu m waveband broadband picopulse multi-wavelength light fibre sources |
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2018
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Patent Citations (5)
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| US7099360B2 (en) * | 2003-02-03 | 2006-08-29 | Intel Corporation | Method and apparatus to generate and monitor optical signals and control power levels thereof in a planar lightwave circuit |
| CN204256167U (en) * | 2014-09-09 | 2015-04-08 | 航天恒星科技有限公司 | A kind of Laser Detecting Set based on pulse modulation technology |
| CN206412629U (en) * | 2017-01-22 | 2017-08-15 | 昆山华辰光电科技有限公司 | The MOPA optical fiber lasers of adjustable pulse width |
| CN107069411A (en) * | 2017-03-30 | 2017-08-18 | 武汉华日精密激光股份有限公司 | High-energy Ps Laser Pulse POD control systems and method |
| CN107492781A (en) * | 2017-09-30 | 2017-12-19 | 长春理工大学 | 1.7 mu m waveband broadband picopulse multi-wavelength light fibre sources |
Non-Patent Citations (1)
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Cited By (1)
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| CN112697698A (en) * | 2020-11-27 | 2021-04-23 | 中国人民解放军空军工程大学 | Double-beam synergistic laser shock wave binding force detection device and method |
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Application publication date: 20181207 |