由激光束腰半径小于几何光学束腰半径谈光子纠缠态  

Discussion about Light Entanglement State From the Laser Beam Waist Radius Is Smaller Than Geometric Optics Waist Radius

作　　者：张守银 苗杰光[2] 付石友[2] 蔡辉剑[3] 

机构地区：[1]山东荣信集团,山东日照276800 [2]哈尔滨工业大学(威海)信息光电子研究所,山东威海264209 [3]鹤壁职业技术学院,河南鹤壁458030

出　　处：《激光杂志》2016年第9期14-18,共5页Laser Journal

摘　　要：首先,从激光器凹形反射镜有源稳定共焦腔具有束腰半径而非圆柱形激光束,由此考虑到:激光器谐振腔中光束为且有包括束腰细处呈现双曲线形而非圆柱形是与谐振腔中反射境为凹镜有关的,进而考察有关实验数据,即从(二氧化碳激光器与氖氦激光器)束腰半径与反射镜半径之间的关系这两个特例进行考察,用激光器谐振腔中光线往返传播矩阵计算出谐振腔中心点O往外至反射镜半径之半处O_1到两反射镜边缘连线A^1O_1A为光线近似为零区,而AO_1A'BC'O_(11)CB'A为光线密集区,据对称性可知轴的另一侧的光线密集区的位置。考察结果是:不仅二氧化碳激光器、氖氦激光器,而且一般的共焦腔凹形反射镜激光器的基模束腰半径W_(os)小于OO_1,即Wos小于反射镜半径的一半是一个普遍规律.然后,解释了束腰半径Wos小于反射镜半径一半a/2的原因,最后,解释了《激光原理》中的共焦腔模的场为什么主要集中在反射镜面中心附近很小的区域的原因。In this paper, first of all, notice the concave reflector active stability confocal cavity Laser has waist radi- us rather than cylindrical beam, So considering the Laser beam in the cavity include for waist and have been appear double curvy rather than cylindrical is related to the concave mirror in resonant cavity, explore the relevant experimental data,that is,from the telalionship between the radius of reflector and the waist radius of CO2 laser and Ne-He laser, with a light matrix back and forth in the Laser cavity, calculate the radius of the outward to the center cavity mirror 0 to half mirror radius center 01 and the reflector edge A＇OIA attachment in the are that light approximate zero, and the AO1A＇BC＇O11CB＇A is the light concentration areas,according to the symmetry, can infer the light concentration areas on the other side. Inspection result is： not only a CO2 Laser,Ne-He Laser,and the general eonfoeal cavity concave reflector Laser fundamental mode beam waist radius is less than half the radius of reflector, means wos is lessthan 001 , and this is a general law. Then, explains the fundamental mode beam waist radius wos is less than half of the mirror radius a/2. End, explais the principle of Laser confoeal modes of why field are mainly concentrated in small area near the epicenter of the mirror.

关 键 词：激光光学 激光束腰 束腰半径 几何束腰半径 光线密集区 光线近似为零区 光子纠缠态 光束体积变小性 

分 类 号：TN24[电子电信—物理电子学]