Detection and sizing of small particles in an open cavity gas laser.
Detection and sizing of small particles in an open cavity gas laser.
复制标题
开腔气体激光器中小颗粒的检测和尺寸测定。
DOI：
10.1364/ao.11.001515
复制
发表时间：
1972
期刊：
影响因子：
1.9
通讯作者：
Robert G. Knollenberg
中科院分区：
文献类型：
--
作者：
Burton G. Schuster;Robert G. Knollenberg
使用以632.8微米振荡的He-Ne气体激光器的开放腔来检测气溶胶颗粒并对其进行尺寸测量。这是针对激光器的两个横模TEM（oo）和TEM（o 1）* 进行的。粒子消光损耗与激光功率的关系曲线表明，在单程饱和增益较小的条件下，粒子消光损耗与非均匀展宽谱线的理论一致。TEM（OL）*，甜甜圈，模式被证明是最好的操作仪器中使用。外推的测量小于激光辐射的波长的颗粒进行了讨论。
The open cavity of a He-Ne gas laser oscillating at 632.8 microm was used to detect and size aerosol particles. This was done for two transverse modes of the laser, the TEM(oo) and TEM(o1) *. Plots of particle extinction loss vs laser power are shown to agree with the theory for an inhomogeneously broadened line under the condition of small saturated gain per pass. The TEM(ol)*, doughnut, mode is shown to be preferable for use in an operational instrument. Extrapolation of the measurement to particles smaller than the wavelength of the laser radiation is discussed.