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According to the generalized Huygens-Fresnel principle, the peculiarity of laser beam intensity distribution is simulated under the different condition such as refractive index of atmospheric structure constant and transmission pace and laser wavelength.

根据广义惠更斯-菲涅耳原理，对TEM00模和TEM10模光束在不同大气折射率结构常数、传输距离和传输激光波长条件下的光强分布特性进行数值模拟。

In order to establish the boundary conditions to the equations, we have taken into consideration the fact that a constructive interference at the coupler assures that the laser radiations from both constituent lasers be directed to the coupler output port to which a reflection mirror, defining both laser cavities and executing the mutual injection between two lasers, is attached.

考虑到设置在光纤耦合器的一个输出端口的公共反射镜还担负着实施两个激光器间的相互注入的功能，利用光纤耦合器的变换矩阵以及光场相干叠加的要求，可以确定激光器速率方程组满足的边界条件。

In this thesis, a semi-classical model of the force on an atom is used to describe the motion of a two-level atom interacting with a standing wave laser field. The velocity dependent force and momentum diffusion are derived through optical Bloch equations by using the matrix form of the continued fraction technique. By investigating the dynamic properties of atoms in laser field, we can control and manipulate the mechanical motion of an atom.

本文利用半经典理论，从二能级原子在激光驻波场中所满足的运动方程出发，推导出密度矩阵元所满足的递推关系，利用矩阵连分数方法求解出密度矩阵元，从而求出依赖于原子运动速度的光压力与动量扩散系数，通过讨论原子在激光场中的动力学行为，为原子在激光场中被囚禁、形成原子列阵以及可控制的量子态，从而为量子信息处理提供理论基础。

The laser marking algorithm of Multi-Grey image mostly research how to reappearance continuous tone image through laser marking.

多灰度图像的激光雕刻算法是研究如何通过激光雕刻来逼真再现具有连续色调的灰度图像。

With the development of laser techniques , 1.5μm high power continuous wave single-frequency laser has been used for scientific research and other fields.

随着激光技术的发展，1.5μm高功率连续单频激光光源被广泛应用于生产、科研等各个领域。

In the 20th century, 70 years ago, due to the high-power continuous wave laser has not yet developed, the study focused on pulsed laser pick on.

在20世纪70年代以前，由于高功率连续波形激光器尚未开发出来，所以研究重点集中在脉冲激光接上。

The principle of constant power drive is: PD converts the change of output light power of laser diode into the change of diode current, and the change of current is feed back to voltage-current converser which adjusts output current of driver to compensate the laser diode.

这样，当激光器的输出光功率衰减时，驱动器相应的增大输出电流；当激光器的输出光功率增强时，驱动器就相应减小输出电流。对许多激光器应用来说，最希望脉冲输出，因为脉冲输出只有极小的结发热。

ABSTRACT Laser propulsion, which works on the counterforce generated during the interaction between high-power laser and propellant, is a n...

激光推进是利用高能激光与工质相互作用产生的反作用力推动飞行器前进的新概念推进技术。

Applications of laser radar cross section in the design and evaluation of laser measure systems［J］.

高卫。激光雷达截面在系统设计评价中的应用分析［J］。

The dissertation takes 2 kw crosscurrent CO2 laser for example, aiming to develop three simulation sub-systems of high power crosscurrent CO2 laser.

以2kw横流CO_2激光器为研究对象，开发了2kw横流CO_2激光器仿真系统的三个子系统。

Yet, Edith says, there was always money in the bank.

但是Edith说，她的银行户口里面总是有钱。

We have created a series of files that resolve this problem--one for each day of the 40 days of purpose.

我们制作一系列的档案去解决这问题---一个为标竿40天中的每一天。