ultrashort laser pulse造句

• Ultrashort laser pulse
  超短激光脉冲
• In a laser - powered plasma accelerator , an ultrashort laser pulse is focused into a helium jet that is a couple of millimeters long
  在雷射电浆加速器里，一个超短的雷射脉冲聚焦到一束大约两、三公?长的氦喷射气流中。
• In the case of ultrashort laser pulse , the effect of finite pulse length is anlyzed , and self - steepening in the front of the pulse will occur when only relativistic nonlinearity is considered
  同时，对于超短脉冲传输，分析了有限脉冲宽度效应对傍轴方程的修正，当只考虑相对论性非线性效应时将会引起激光脉冲前沿自陡峭。
• The laser beam spot evolution and electron density in the guiding range are evaluated with the burn pattern and the measured conductivity . the above results will be useful in ultrashort laser pulse amplification and future research in ultrashort intense laser propagation in plasmas and ionizing gases
  以上研究结果对于超短脉冲激光放大技术研究以及超短超强脉冲激光在低密度等离子体和空气中长距离传输和聚焦研究等具有重要的实用参考价值。
• The propagation of ultrashort laser pulse in air is analyzed with mechanics analogy by considering kerr effects and free electron defocusing . the equation describing the evolution of the laser spot is derived . it is shown that long distance focusing requires large initial beam and the propagation distance is very sensitive to the initial divergence angle of the laser beam
  考虑多光子电离效应和光学kerr效应，首次利用力学类比的方法研究了超短脉冲激光在电离气体中的传输，详细分析了传输距离与激光初始光斑、初始发散角以及激光功率的关系，提出了实现长距离传输的条件。
• Bio - tissue optics is the basic of the light diagnostic and therapeutic medicine , whose most critical problem is the measurement of the optical properties of the turbid tissues , such as the absorption a , the scattering s , and the am ' sotropy coefficient g . in this paper , the optical properties of ultrashort laser pulse within turbid tissues has been investigated and discussed
  激光与生物组织的相互作用规律是光动力学治疗、医学成像、监测组织的生理和结构状态等技术的理论基础和前提，其中的关键性问题就是确定生物组织的光学性质的基本参数，即吸收系数、散射系数和各向异性因子等。