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為滿足廣大客戶在真空環(huán)境中對激光光束質(zhì)量，氣流，等離子體密度測量分析，以及光學(xué)系統(tǒng)裝配的需求。法國phasics推出了新型高精度波前分析儀sid4-v，是目前市場上僅有一款可應(yīng)用于真空度在10-6 mbar環(huán)境中的波前分析儀，廣泛應(yīng)用于高功率激光測試中。
產(chǎn)品特點(diǎn)：
可適用于＞10-6mbar真空環(huán)境
高分辨率160×120相位像素
光譜范圍從400 nm到1100 nm
可測量發(fā)散光束
熱和機(jī)械真空不改變測試結(jié)果
真空循環(huán)下無任何性能下降
真空和常壓下均可使用
產(chǎn)品參數(shù)：
真空相容性 | 10-6mbar |
波長范圍 | 400 - 1100 nm |
通光孔徑 | 3.6 x 4.8 mm2 |
空間分辨率 | 29.6 μm |
采樣點(diǎn)（相位/強(qiáng)度） | 160 x 120 (> 19 000 points) |
相位相對靈敏度 | < 2 nm rms |
相位精度 | 10 nm rms |
動態(tài)范圍 | > 100 μm |
采樣頻率 | > 100 fps |
實(shí)時(shí)分析頻率 | > 10 fps (full resolution) |
數(shù)據(jù)接口 | giga ethernet |
尺寸(w x h x l) | 54 x 46 x 75.3 mm |
重量 | ~250 g |
關(guān)于phasics：法國phasics公司自主研發(fā)的波前傳感器是基于其**的四波橫向剪切干涉技術(shù)。相較傳統(tǒng)的夏克-哈特曼波前探測器具有高分辨率、消色差、高靈敏度、高動態(tài)檢測范圍、操作簡便等獨(dú)特的優(yōu)勢。為波前像差、波前畸變的檢測以及激光光束及波前的測量、分析等提供了全新的解決方案。 法國phasics波前傳感器生產(chǎn)廠家具有雄厚的技術(shù)研發(fā)實(shí)力，能為客戶提供的各種自適應(yīng)光學(xué)系統(tǒng)oa-sys，制定個性化解決方案?？筛鶕?jù)客戶的應(yīng)用需求。
波前分析儀主要應(yīng)用領(lǐng)域：
1. 激光光束參數(shù)測量：相位（2d/3d），m2，束腰位置，直徑，澤尼克/勒讓德系數(shù)
2. 自適應(yīng)光學(xué)：焦斑優(yōu)化，光束整形
3. 元器件表面質(zhì)量分析：表面質(zhì)量（rms，ptv，wfe），曲率半徑
4. 光學(xué)系統(tǒng)質(zhì)量分析：mtf， psf， efl， 澤尼克系數(shù)， 光學(xué)鏡頭/系統(tǒng)質(zhì)量控制
5. 熱成像分析，等離子體特征分析
6. 生物應(yīng)用：蛋白質(zhì)等組織定量相位成像
Phasics is innovating by proposing the first off-the-shelf vacuum compatible wavefront sensor on the market. The SID4 Vis designed to perform wavefront measurements under high vacuum. the wavefront measurement is realized in-situ in the same condition as the experiment. Our new SID4 V vacuum wavefront sensor is also used to characterize laser beams after compression inside the compressor vessel. Finally， gas jet and plasma density are now measured as close to the target as possible.
BENEFITS: With Phasics’s unique strategy it’s now possible to correct the aberrations of every single optical element up to the target location inside the vacuum chamber.
VACUUM COMPATIBLE & HIGH RESOLUTION | DESIGNED FOR VACUUM DOWN TO 10-6 mbar
Vacuum compatibility > 10-6 mbar
High resolution 160 x 120 phase pixels
Spectral range from 400 nm to 1100 nm
Diverging beam compatible
Invariant to thermal and mechanical vacuum constraints
Tolerates vacuum-cycles without any performance decrease
Both functional under vacuum and atmospheric pressure
Low outgassing
| Vacuum compatibility | > 10-6 mbar |
| Wavelength range | 400 - 1100 nm |
| Aperture dimension | 4.73 x 3.55 mm2 |
| maximum NA (optional software necessary) | 0.2 |
| Spatial resolution | 29.6 μm |
| Phase & intensity sampling | 160 x 120 |
| Accuracy | 15 nm RMS |
| Resolution (Phase) | 2 nm RMS |
| Acquisition rate | 60 fps |
| Real-time processing frequency | 7 Hz (full resolution) |
| Interface | Giga Ethernet |
| MTBF | > 10 years |
| Dimensions (w x h x l) | 54 x 46 x 75.3 mm |
| Weight | ~ 250 g |
SID4 DENSITY software package supports the whole process to measure gas and plasma electron density. It calculates density maps from phase acquisition. It also offers various options for acquisition and data analysis.
| WORKING CONDITIONS | |
| Application | Any axisymmetric monoatomic gas jet/plasma for inverse-Abel transform analysis |
| Probe source | White light (halogen)， LED， laser or fs-laser |
| Pressure | From 2 to 300 bars |
| Plasma length | Depends on the imaging system (typically 2 mm long and diameter of 0.2 mm) |
| SOFTWARE | |
| Acquisition | Real Time， programmed， trigger |
| Settings | Wavelength， magnification， jet direction， gas type |
| Analysis | Density map & profiles， Symmetrization， filters |
Performances such as the spatial resolution or the density resolution entirely depend on both the optical set-up (imaging system， probe source) and the injected gas (molar refractivity). Please contact us for an estimation of specifications for your set-up.
As an example， for an laser produced plasma using an Argon gas jet at working pressure between 2 and 300 bars， the lowest measured Argon density in a single shot is: 1017 particles/cm3 with a nozzle of 1.5 mm diameter.
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