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首页> 外文会议>High-Power Laser Ablation VI pt.1 >New trends in femtosecond Pulsed Laser Deposition and femtosecond produced plasma diagnostics
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New trends in femtosecond Pulsed Laser Deposition and femtosecond produced plasma diagnostics

机译：飞秒脉冲激光沉积和飞秒产生等离子体诊断的新趋势

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摘要

The availability of compact table top amplified femtosecond lasers and the technical simplicity of experimental design have opened the way to many recent and fast developments towards thin film elaboration by Pulsed Laser Deposition (PLD) with ultra short laser pulses, with the aim of producing materials of high quality previously unattainable or attainable only through more complex means. The first developments of PLD using femtosecond lasers were made on Diamond-Like Carbon thin films elaboration, with the attempt to reach high sp~3 content. PLD with ultra short pulses was used recently to deposit several systems such as quasicrystals or oxides with a transfer of the target composition to the deposited films, even for compounds with complex stoechiometry. Femtosecond laser ablation from solid targets has shown its capability in producing nanoparticles of different materials, even in high vacuum conditions. Nanostructured films of doped Diamond-Like Carbon were obtained recently, opening the way to large applications towards functional materials. The characteristics of the plasma are a well-suited signature of the physics of laser-matter interaction and plasma plume creation and expansion. Recent studies on the control of the film growth and femtosecond PLD processes will be reported. Emphasis on actual capability of the existing sources to elaborate high quality materials will be questioned in terms of energy per pulse, time width, repetition rates but also in the need for further source development and beam shaping improvement.
机译：紧凑型台式放大飞秒激光器的可用性和实验设计的技术简便性，为许多最近和快速的发展开辟了道路，以超短激光脉冲通过脉冲激光沉积（PLD）精细加工薄膜。以前无法获得或只能通过更复杂的手段才能获得的高质量。飞秒激光在PLD上的首次开发是在类似于Diamond的碳薄膜上进行的，试图达到较高的sp〜3含量。最近使用具有超短脉冲的PLD沉积了几种系统，例如准晶体或氧化物，目标成分转移到了沉积膜上，即使是化学计量复杂的化合物也是如此。飞秒激光从固体靶材烧蚀已显示出即使在高真空条件下也能生产不同材料的纳米颗粒的能力。最近获得了掺杂类金刚石碳的纳米结构薄膜，这为功能材料的大规模应用开辟了道路。等离子体的特征是激光与物质相互作用以及等离子体羽流产生和膨胀的物理学的恰当标志。将报道有关控制膜生长和飞秒PLD工艺的最新研究。对于每个脉冲的能量，时间宽度，重复率，以及是否需要进一步开发光源和改进波束成形，都将质疑现有光源制作高质量材料的实际能力。

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