CN107069402B - Flat gain broadband neodymium glass amplifier and gain method based on birefringent filtering - Google Patents
Flat gain broadband neodymium glass amplifier and gain method based on birefringent filtering Download PDFInfo
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- CN107069402B CN107069402B CN201710048926.1A CN201710048926A CN107069402B CN 107069402 B CN107069402 B CN 107069402B CN 201710048926 A CN201710048926 A CN 201710048926A CN 107069402 B CN107069402 B CN 107069402B
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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
- H01S3/10061—Polarization control
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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
- H01S3/10023—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating in optical amplifiers by functional association of additional optical elements, e.g. filters, gratings, reflectors
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Abstract
The invention discloses a kind of flat gain broadband neodymium glass amplifier based on birefringent filtering, it includes Polarization Controller, birefringent filtering spectrum balanced device and neodymium glass amplifier, Polarization Controller by the quarter-wave plate that is arranged successively in the optical path and half wave plate group at, the birefringent filtering spectrum balanced device is by the polarizer that is arranged successively in the optical path, phase delay device and analyzer composition, the polarizer is consistent through direction with the polarization of analyzer, the phase delay device is fixed on rotation adjustment frame, the neodymium glass amplifier includes neodymium glass and pump light source.The present invention combines birefringent filtering spectrum balanced device and neodymium glass amplifier, constructs a kind of neodymium glass broad band laser amplifier of flat gain.Spectral transmittance is specifically adjusted using birefringent light spectral filter technology, counter-bonification is carried out to the gain spectra of traditional neodymium glass amplifier, it is final to realize compared with the flat gain spectrum in wide spectral range.
Description
Technical field
The invention belongs to neodymium glass amplifier regions, more specifically, it is flat to be related to a kind of gain based on birefringent filtering
Smooth broadband neodymium glass amplifier and gain method can level the gain spectral of neodymium glass amplifier in 20nm spectral region.
Background technique
High power laser light technology is widely used in a variety of large scale laser instruments, these large-scale device of high power laser
Output pulse energy can achieve 2MJ or more, and in high-energy density physics, the fields such as inertial confinement fusion have important answer
With value.Currently, the technology path that amplifies of the high power laser light based on neodymium glass amplifier relative maturity, in the big of various countries
In type device of high power laser, neodymium glass has been widely used as laser amplifier.
However, the configuration of neodymium glass amplifier at present mainly face be narrowband nanosecond pulse amplification.Work as laser bandwidth
When further increasing, neodymium glass amplifier will will receive the shadow of Gain-narrowing effect, gain saturaition, nonlinear effect etc.
It rings.Especially Gain-narrowing effect will lead to amplified spectrum and substantially narrow.And on the other hand, it is existing to study channel syndrome
Bright: broad band laser is possible to solve the problems, such as the load capacity of laser and beam quality, while being additionally beneficial to realize the even cunning of beam
Improve target surface irradiation uniformity.In addition, SRS, the effects such as SBS can also be inhibited by increasing bandwidth.
It is therefore proposed that one kind overcomes Gain-narrowing effect, the neodymium glass broad band laser amplifier of flat gain is realized, not only
It is applicable in existing neodymium glass amplifying technique route, is more expected to realize the output of broadband high-power laser, have highly important existing
Sincere justice.Currently, in order to realize the amplification of broad band laser, common technology path mainly has chirped pulse amplification, hybrid glass
Amplifier etc..Chirped pulse laser amplification technique needs to generate chirped pulse as amplification system using complicated front end system
Signal light；Hybrid glass amplifier then needs to introduce new neodymium glass (such as silicate glass) as amplifier, is significantly increased
The complexity and cost of amplification system.
Summary of the invention
Aiming at the problems existing in the prior art, the present invention provides a kind of flat gain broadband neodymium based on birefringent filtering
Glass Amplifier and gain method, the present invention combine birefringent filtering spectrum balanced device and neodymium glass amplifier, construct one kind
The neodymium glass broad band laser amplifier of flat gain.
To achieve the above object, the invention adopts the following technical scheme:
A kind of flat gain broadband neodymium glass amplifier based on birefringent filtering, it includes Polarization Controller, birefringent
Filtering spectrum balanced device and neodymium glass amplifier, the Polarization Controller by the quarter-wave plate that is arranged successively in the optical path and
Half wave plate group is at, the birefringent filtering spectrum balanced device by the polarizer, phase delay device and inspection that are arranged successively in the optical path
Inclined device composition, the polarizer is consistent through direction with the polarization of analyzer, and the phase delay device is fixed on rotation adjustment frame
On, the neodymium glass amplifier includes neodymium glass and pump light source.
The pump light source is pumping xenon lamp or laser.
The polarizer is the first polarizing film, and analyzer is the second polarizing film.
The function of the Polarization Controller is to obtain to be polarized with the subsequent consistent linearly polarized light in polarizer polarization direction, reduction
Insertion loss caused by device.
The phase delay device is birefringece crystal.
The birefringece crystal be natural birefringence crystal or synthetic birefringence crystal, be quartz crystal, yttrium vanadate crystal,
Calcite or a-BBO crystal.
A kind of gain method of the flat gain broadband neodymium glass amplifier based on birefringent filtering, includes the following steps,
Step 1, a branch of wavelength is the seed laser beam to be amplified of λ (1053nm ± 10nm), is incident on polarization control first
On device processed, seed laser beam first passes through quarter-wave plate, and the angle for adjusting quarter-wave plate is emitted light beam with line polarisation,
Then, light beam adjusts the angle of half-wave plate, keeps line polarisation direction consistent with the transmission direction of the polarizer by half-wave plate；
Step 2, the line polarisation light beam that the step 1 obtains is incident on the polarizer, is then transmitted to a thickness of the two-fold of d
It penetrates in crystal, rotating birefringence penetrates crystal, makes birefringece crystal primary optical axis and the first polarizing film transmission light direction at angle theta, described
Laser beam is split into ordinary light and extraordinary ray, and the refringence of the ordinary light and extraordinary ray is Δ n, the ordinary light (O
Light) and extraordinary ray (e light) between generate phase differenceTherefore, light beam is after birefringece crystal, phase difference
Presence the polarization direction of laser beam is rotated, therefore, after birefringece crystal, the presence of phase difference makes light beam
The polarization direction of laser beam rotates, and the polarization rotation of different wave length is of different sizes；
Step 3, laser beam is by polarizing film, and since the polarization direction of different wave length is different, transmitted light intensity is with wavelength
And change, so that filter action is realized, to realize filter action.The electric field transmissivity T's of birefringent filtering spectrum balanced device
Function are as follows: T=1-A (1-cos (Φ)), whereinA is modulation depth, and birefringent filtering spectrum is balanced
The electric field transmissivity of deviceAs it can be seen that electric field transmissivity is in cosine function form,
Cycle of oscillation about wavelength determines by birefringece crystal thickness and refringence, and rotating birefringence penetrates crystal, change primary optical axis with
Polarization direction angle, the then numerical value of adjustable transmissivity；The outgoing beam of birefringent filtering spectrum balanced device is inclined due to first
The filter action of vibration piece and the second polarizing film is spectrally presented saddle-shape recess, realizes the precompensation of gain spectra, obtains total
The broad band laser amplifier of body flat gain.
The present invention is based on specific structure in the gain method of the flat gain broadband neodymium glass amplifier of birefringent filtering and
The selection of parameter includes following aspect:
1. determining the type and thickness of birefringece crystal.Due to the bandwidth and central wavelength of birefringent filtering spectrum balanced device
Depending on the phase modulation in transmitted spectrum, the i.e. refringence and thickness of birefringece crystal.Therefore, it is suitble in selection two-fold
It penetrates on the basis of crystalline, amplification bandwidth and central wavelength according to needed for amplifier determine birefringece crystal thickness, required
Gain spectra fall within the filter range of spectral equalizer.
2. determining the key light axis direction of birefringece crystal spectrum.Birefringece crystal is fixed on rotation adjusting bracket, Ke Yizhuan
Dynamic key light axis direction.Since key light axis direction determines the modulation depth of transmitted spectrum, for the broadband for obtaining flat gain
Laser amplifier needs the gain characteristic amplified according to neodymium glass, designs suitable modulation depth, realizes to the anti-of gain spectra
Compensation.Then corresponding key light axis direction is determined according to required modulation depth.
3. determining required amplifier series.In order to obtain higher amplification factor, amplifying unit can be cascaded.
According to the final amplification factor for realizing that broad band laser amplification is required, required amplifier series is determined.
Compared with prior art, the invention has the benefit that 1. the present invention combine birefringent filtering spectrum balanced device and
Neodymium glass amplifier constructs a kind of neodymium glass broad band laser amplifier of flat gain, using birefringent light spectral filter technology
Spectral transmittance is adjusted, counter-bonification is carried out to the gain spectra of traditional neodymium glass amplifier, it is final to realize compared with wide spectral range
Interior flat gain spectrum；2. the present invention controls incident light polarization using quarter-wave plate and half-wave plate, avoid because of incidence
Light polarization is uncertain to lead to insertion loss caused by the polarizer, and 3. the present invention chooses according to the amplification factor of neodymium glass amplifier
Suitable primary optical axis and polarization direction angle realize different size of spectrum precompensation effect；4. according to required laser amplifier
Amplification bandwidth, choose the birefringece crystal of suitable species and thickness, obtain enough spectrum precompensation bandwidth；5. the present invention is not
It is limited only to single step arrangement, the structure of multi-stage cascade can be used, obtains the flat gain broadband neodymium glass amplification of more large gain
Device；6. the present invention can realize more uniform width in the gain spectrum for realizing relatively flat compared with wide spectral range (being greater than 20nm)
Band laser amplifier, and more complicated birefringent filtering spectrum balanced device can be extended to according to specific requirements, it obtains
Bandwidth is bigger, the more flat broadband neodymium glass amplifier of gain.
Detailed description of the invention
Fig. 1 is the overall structure figure of flat gain broadband neodymium glass amplifier of the invention.
Fig. 2 is the structure chart of birefringent filtering spectrum balanced device in the present invention.
Fig. 3 is the calculated results curve graph that is pre-compensated for by gain spectral in the specific embodiment of the invention.
Specific embodiment
Come with specific embodiment with reference to the accompanying drawing to a kind of flat gain broadband based on birefringent filtering of the present invention
The device of neodymium glass amplifier further describes in detail, in the hope of providing a clearer understanding of its specific structure and realizing
Journey, but cannot be used as a limitation the invention patent protection scope.
Flat gain broadband neodymium glass amplifier of the present embodiment based on birefringent filtering, it includes Polarization Controller 1, double
Reflect filtering spectrum balanced device 4 and neodymium glass amplifier 8, the Polarization Controller is by a quarter that is arranged successively in the optical path
Wave plate 2 and half-wave plate 3 form, the birefringent filtering spectrum balanced device 4 by be arranged successively in the optical path the polarizer 5, phase
Delayer 6 and analyzer 7 form, and the polarizer 5 is consistent through direction with the polarization of analyzer 7, and the polarizer 5 is the first polarization
Piece, analyzer 7 are the second polarizing film, and the phase delay device 6 is fixed on rotation adjustment frame, and the neodymium glass amplifier 8 wraps
Include neodymium glass and pump light source.
Preferably, pump light source is pumping xenon lamp or laser in the present embodiment.
As further preferred, phase delay device is birefringece crystal in the present embodiment.
As still more preferably, birefringece crystal is that natural birefringence crystal or synthetic birefringence are brilliant in the present embodiment
Body is quartz crystal, yttrium vanadate crystal, calcite or a-BBO crystal.
The gain method of flat gain broadband neodymium glass amplifier of the present embodiment based on birefringent filtering, including following step
Suddenly,
Step 1, a branch of wavelength is the seed laser beam 9 to be amplified of λ, is incident on Polarization Controller 1 first, and seed swashs
Light beam 9 first passes through quarter-wave plate 2, and the angle for adjusting quarter-wave plate 2 is emitted light beam with line polarisation, then, light beam
By half-wave plate 3, the angle of half-wave plate 3 is adjusted, keeps line polarisation direction consistent with the transmission direction of the polarizer 5；
Step 2, the line polarisation light beam that the step 1 obtains is incident on the polarizer 5, is then transmitted to a thickness of the double of d
In refracting crystal, rotating birefringence penetrates crystal, and birefringece crystal primary optical axis and the first polarizing film is made to transmit light direction into angle theta, institute
It states laser beam and is split into ordinary light and extraordinary ray, the refringence of the ordinary light and extraordinary ray is Δ n, the ordinary light
Phase difference is generated between extraordinary rayTherefore, after birefringece crystal, the presence of phase difference makes light beam
The polarization direction for obtaining laser beam rotates, and therefore, for light beam after birefringece crystal, the presence of phase difference makes laser beam
Polarization direction rotates, and the polarization rotation of different wave length is of different sizes；
Step 3, laser beam is by polarizing film, and since the polarization direction of different wave length is different, transmitted light intensity is with wavelength
And change, to realize the function of the electric field transmissivity T of the birefringent filtering spectrum balanced device of filter action are as follows: T=1-A (1-
Cos (Φ)), whereinA is modulation depth, the electric field transmissivity of birefringent filtering spectrum balanced deviceThe outgoing beam of birefringent filtering spectrum balanced device 4 is due to the first polarizing film
With the filter action of the second polarizing film, saddle-shape recess, the saddle-shape recess and neodymium glass amplifier is spectrally presented
Gain spectrum realizes complementary, the final precompensation for realizing gain spectra, the flat broad band laser amplifier of acquisition overall gain.
In the present embodiment Fig. 1, shown 9,10 and 11 indicate the incident direction of laser beam, wherein 9 is defeated for front end system
Seed laser beam out is elliptically polarized light；10 for by after Polarization Controller with the consistent line polarisation of polarizing film transmission direction；
The 11 saddle-shape line polarisation to be obtained after birefringent light spectral filter.
Following application examples is using quartz crystal as birefringece crystal:
Quartz crystal with a thickness of birefringence difference Δ n be 0.009, quartz crystal is fixed on precision rotation device, angle
0.1 ° of the control precision of degree, the machining accuracy of quartz crystal thickness are 50 μm,
Above angle control precision and quartz crystal thickness machining accuracy prior art can be achieved.
It, can be by incident light polarization direction by adjusting quarter-wave plate appropriate and half-wave plate angle in the present embodiment
It is adjusted to consistent with polarizing film transmission direction.
Specific implementation step are as follows:
1. rotating quarter-wave plate, make incident light by being changed into linearly polarized light beam after wave plate.
2. rotatable halfwave plate is that line polarisation polarization direction rotates, when light intensity maximum after polarizing film, light beam polarization
Direction is consistent with polarizing film transmission direction；
According to the electric field transmissivity of birefringent filtering spectrum balanced device:
Use thickness d for 3950 μm of quartz crystal in the present embodiment, quartz crystal primary optical axis and polarizing film transmission direction
Angle theta is 77.1 °, substitutes into relevant parameter, obtains the electric field transmissivity of birefringent filtering spectrum balanced device are as follows:
Tfilt=1-0.094751 (1-cos (3881.626219 λ))
The entire gain function of amplifier can be considered the amplification coefficient and birefringent filtering spectrum balanced device electric field of neodymium glass
The product of transmissivity quadratic power:
T=eα(λ)·Tfilt 2
Wherein, α (λ) is the gain coefficient of neodymium glass；
For the effect of simpler clear elaboration flat gain in the present embodiment, gain spectrum is normalized,
And the corresponding gain coefficient of central wavelength is 1, neodymium glass gain spectral then can be obtained with above formula, Birefringent Filter is saturating
The gain spectrum of spectrum and overall flat is penetrated, respectively as shown in Figure 3.In Fig. 3, in (the 1053nm to 1073nm) wave of 20nm bandwidth
In long range, when not using birefringent filtering spectrum balanced device, gain spectrum maximum value is 2.66, minimum value 1.88, two
Person's ratio is 1.41, i.e., unevenness is 41%；After birefringent filtering spectrum balanced device, gain spectrum maximum value is
1.81, minimum value position 1.73, the two ratio is 1.05, i.e., unevenness is 5%.Therefore flat gain of the present invention is used
Broadband neodymium glass amplifier, gain spectrum flatness improve a nearly magnitude.
Finally it should be noted that: the above embodiments are merely illustrative of the technical scheme of the present invention and are not intended to be limiting thereof；To the greatest extent
The present invention is described in detail with reference to preferred embodiments for pipe, those of ordinary skills in the art should understand that；Still
It can modify to a specific embodiment of the invention or some technical features can be equivalently replaced；Without departing from this hair
The spirit of bright technical solution should all cover within the scope of the technical scheme claimed by the invention.
Claims (4)
1. a kind of gain method of the flat gain broadband neodymium glass amplifier based on birefringent filtering, which is characterized in that this is put
Big device includes Polarization Controller (1), birefringent filtering spectrum balanced device (4) and neodymium glass amplifier (8), the Polarization Controller
It is made of the quarter-wave plate (2) and half-wave plate (3) that are arranged successively in the optical path, the birefringent filtering spectrum balanced device
(4) be made of the polarizer (5), phase delay device (6) and analyzer (7) that are arranged successively in the optical path, the polarizer (5) and
The polarization of analyzer (7) is consistent through direction, and the phase delay device (6) is fixed on rotation adjustment frame, and the neodymium glass is put
Big device (8) includes neodymium glass and pump light source, and the polarizer (5) is the first polarizing film, and analyzer (7) is the second polarizing film,
The gain method of the flat gain broadband neodymium glass amplifier based on birefringent filtering specifically includes the following steps:
Step 1, the seed laser beam (9) to be amplified that a branch of wavelength is, is incident on first on Polarization Controller (1), and seed swashs
Light beam (9) first passes through quarter-wave plate (2), and the angle for adjusting quarter-wave plate (2) is emitted light beam with line polarisation, with
Afterwards, light beam adjusts the angle of half-wave plate (3), makes the transmission direction one in line polarisation direction Yu the polarizer (5) by half-wave plate (3)
It causes；
Step 2, the line polarisation light beam that the step 1 obtains is incident on the polarizer (5), is then transmitted to a thickness of the two-fold of d
It penetrates in crystal, rotating birefringence penetrates crystal, makes birefringece crystal primary optical axis and the polarizer (5) transmission light direction at angle theta, described to swash
Beam splitting is ordinary light and extraordinary ray, and the refringence of the ordinary light and extraordinary ray is, the ordinary light and non-is sought
Phase difference is generated between ordinary light, phase difference rotates the polarization direction of laser beam；
Step 3, laser beam is by polarizing film, and the polarization direction of different wave length is different, and transmitted light intensity changes with wavelength, thus real
Existing filter action, the function of the electric field transmissivity T of birefringent filtering spectrum balanced device are as follows:, wherein, A is modulation depth, the electric field transmissivity of birefringent filtering spectrum balanced device, the outgoing beam of birefringent filtering spectrum balanced device (4) is due to the first polarization
The filter action of piece and the second polarizing film is spectrally presented saddle-shape recess, realizes the precompensation of gain spectra, obtains overall
The broad band laser amplifier of flat gain.
2. the gain method of the flat gain broadband neodymium glass amplifier according to claim 1 based on birefringent filtering,
It is characterized in that, the pump light source is pumping xenon lamp or laser.
3. the gain method of the flat gain broadband neodymium glass amplifier according to claim 1 based on birefringent filtering,
It is characterized in that, the phase delay device is birefringece crystal.
4. the gain method of the flat gain broadband neodymium glass amplifier according to claim 3 based on birefringent filtering,
It is characterized in that, the birefringece crystal is natural birefringence crystal or synthetic birefringence crystal, it is quartz crystal, Yttrium Orthovanadate crystalline substance
Body, calcite or a-BBO crystal.
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| CN108051947B (en) * | 2018-01-09 | 2024-04-12 | 河北工业大学 | Color gamut widening device |
| CN108110604A (en) * | 2018-01-15 | 2018-06-01 | 中国科学院福建物质结构研究所 | Q-switched Pulse Laser device and method and apply its laser medical equipment |
| CN109802294A (en) * | 2019-03-25 | 2019-05-24 | 中国工程物理研究院上海激光等离子体研究所 | A kind of Low coherence pulse generating device of any time shaping and light spectrum reshaping |
| CN111505895A (en) * | 2020-05-14 | 2020-08-07 | 中影光峰激光影院技术（北京）有限公司 | Stereoscopic projection system |
| CN113451865A (en) * | 2021-06-01 | 2021-09-28 | 中国原子能科学研究院 | Chirped pulse spectrum shaping device and method based on three-wavelength multi-order wave plate |
| US20230006407A1 (en) * | 2021-06-30 | 2023-01-05 | Nufern | Apparatus and method for spectrally shaping a laser beam |
| CN114336229B (en) * | 2021-12-20 | 2024-05-17 | 中国科学院上海光学精密机械研究所 | Method for separating 1053nm and 1075nm laser in large-caliber OPCPA based on birefringence modulation |
| CN114374137B (en) * | 2021-12-29 | 2024-03-26 | 武汉安扬激光技术股份有限公司 | Optical fiber ultraviolet femtosecond laser |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1224175A (en) * | 1998-01-23 | 1999-07-28 | 富士通株式会社 | Tunable optical filter |
| CN105896248A (en) * | 2016-05-10 | 2016-08-24 | 西北大学 | High-power tunable 1.7mum mode-locked fiber laser |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101340387B1 (en) * | 2012-05-30 | 2013-12-11 | 한국과학기술원 | Sub 10MHz - All normal dispersion fiber laser oscillator modelocked by saturable absorber and nonlinear polarization rotation phenomena |
-
2017
- 2017-01-23 CN CN201710048926.1A patent/CN107069402B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1224175A (en) * | 1998-01-23 | 1999-07-28 | 富士通株式会社 | Tunable optical filter |
| CN105896248A (en) * | 2016-05-10 | 2016-08-24 | 西北大学 | High-power tunable 1.7mum mode-locked fiber laser |
Non-Patent Citations (1)
| Title |
|---|
| PERFORMANCE MEASUREMENTS OF THE INJECTION LASER SYSTEM CONFIGURED FOR PICOSECOND SCALE ADVANCED RADIOGRAPHIC CAPABILITY;C. Haefner et al;《Journal of Physics: Conference Series》;20100930;摘要，第1-2页第2节 |
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