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Precise, controlled laser delivery with evanescent optical waves

机译:精确,受控的激光传递与laser逝光波

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Precise laser surgery is possible with laser pulses at wavelengths that are strongly absorbed at the surface of tissue. However, pulses at these wavelengths (far UV, far infrared) are not compatible with fiber-optic transmission, making endoscopic surgical procedures inside the body difficult. We use evanescent optical waves to demonstrate an alternative for confining energy near the tissue surface. Precise, superficial tissue ablation is achieved with evanescent waves generated at a sapphire-tissue interface by a free-electron laser, where the ablation depth may be varied. A new class of precise, controlled laser surgical tools may be achieved in this novel approach for use in endoscopic procedures. Electromagnetic theory governing evanescent-wave tissue ablation is presented.
机译:通过在组织表面强烈吸收的波长的激光脉冲,可以进行精确的激光手术。但是,这些波长(远紫外线,远红外线)的脉冲与光纤传输不兼容,这使得体内窥镜手术变得困难。我们使用e逝光波来演示将能量限制在组织表面附近的替代方法。精确的浅表组织消融是通过自由电子激光在蓝宝石-组织界面产生的e逝波实现的,消融深度可能会有所不同。在这种用于内窥镜手术的新方法中,可以实现一类新型的精确,受控的激光手术工具。提出了控制e逝波组织消融的电磁理论。

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