公开(公告)号：US4693545A

公开(公告)日：1987-09-15

申请号：US646723

申请日：1984-09-04

申请人： Tom Henningsen ,  Theresa A. Gould

发明人： Tom Henningsen ,  Theresa A. Gould

IPC分类号： G01J1/00 ,  G02F1/01 ,  G02F1/35 ,  G02F2/02 ,  H04B10/00 ,  H04B10/04 ,  H04B10/06 ,  H04B10/14 ,  H04B10/22 ,  G02B6/12

CPC分类号： G02F1/0126 ,  G02F1/3515 ,  G02F2/02 ,  Y10S359/90

摘要： The invention provides a method for controlling the transmission of radiant energy through a light transmissive medium and an apparatus whereby the method can be effected. The method includes the steps of introducing a first flux of photons, or the evanescent field thereof, into said medium said photons having energy E, and said medium having energy level characteristics such that the energy, E, of said first flux of photons matches an energy gap between an energy level designated as energy level 2, and another energy level designated as energy level 3 of said medium, and said first flux is substantially unattenuated as said first flux of photons, or the evanescent field thereof, passes through said medium; and selectively introducing a second flux of photons, or the evanescent field thereof, into said medium to attenuate said first flux of photons, said second flux of photons causing the population of energy level two of said medium, wherein a portion of said first flux is absorbed, inducing a population in level 3, a portion of which population in level 3 returns to level 2 and is available for further attenuation of said first flux, whereby the control of the transmission of said first flux of photons by said second flux of photons is more efficient than if the return of excited states from level 3 to level 2 did not occur.

摘要翻译： 本发明提供了一种通过透光介质控制辐射能传输的方法和可实现该方法的设备。 该方法包括以下步骤：将具有能量E的所述光子的第一光通量或其消逝场引入所述介质，并且所述介质具有能级特性，使得所述第一光子束的能量E与 指定为能级2的能级与被指定为所述介质的能量级3的另一能级之间的能量间隙，并且所述第一磁通与所述第一光子束或其渐逝场通过所述介质基本上未衰减; 并且选择性地将第二光子束或其消逝场引入所述介质中以衰减所述第一光子束，所述第二光子束导致所述介质的能级二的群体，其中所述第一通量的一部分是 吸收，诱导3级人口，其中3级人口的一部分返回到2级，并且可用于进一步衰减所述第一通量，由此通过所述第二通量光子控制所述第一光子束的传播 比起兴奋状态从3级恢复到2级没有发生的效率更高。