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Crude oil remote sensing, characterization and cleaning with Continuous Wave and pulsed lasers

机译:使用连续波和脉冲激光对原油进行遥感,表征和清洁

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We demonstrate a successful combination of several optical methods of remote sensing (coherent fringe projection illumination (CFP), holographic in-line interferometry (HILI), laser induced fluorescence,) for detection, identification, and characterization of crude oil. These methods enable the three-dimensional characterization of oil spills that is important for practical applications. Combined methods of CFP and HILI are described in the frame of coherent superposition of partial interference patterns. We show that in addition to detection/identification of oil, laser illumination in the green-blue region can also degrade oil slicks. We tested these methods on differentsurfaces contaminated by oil, which include: oil on water, oil on flat solid surfaces, and oil on curved surfaces of. We use coherent fiber bundles for the detection and monitoring of the laser-induced oil degradation in pipes.. Both continuous-wave (CW) and pulsed lasers are tested using pump-probe schemes. This finding allows us to suggest that properly structured laser clean-up can be an alternative environmental-friendly method of decontamination and cleaning, which can be an alternative to chemical methods, which are dangerous to environmentApplication of holographic amplifier with phase conjugation will allow to increase sensitivity, reduce aberrations from atmospheric distortions and to focus back-reflected amplified beam on the contaminated area thus accelerating laser cleaning.
机译:我们证明了几种光学方法的成功组合(相干条纹投影照明(CFP),全息直插式干涉仪(HILI),激光诱导荧光),可用于检测,鉴定和表征原油。这些方法可以对漏油进行三维表征,这对于实际应用很重要。 CFP和HILI的组合方法在部分干涉图的相干叠加框架中进行了描述。我们显示,除了检测/识别油外,蓝绿色区域中的激光照射还可以降低浮油。我们在不同的被油污染的表面上测试了这些方法,这些表面包括:水上的油,平坦的固体表面上的油以及弯曲表面上的油。我们使用相干光纤束来检测和监测管道中激光引起的油降解。连续波(CW)和脉冲激光都通过泵浦探针方案进行了测试。这一发现使我们建议,结构正确的激光清理可以是一种去污和清洁的替代环保方法,它可以替代对环境有害的化学方法,这对全息放大器的应用具有相位共轭作用,这将增加灵敏性,减少来自大气畸变的像差,并将后向反射的放大光束聚焦在受污染的区域上,从而加快了激光清洁的速度。

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