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21. 发明授权

US4264877A Apparatus for producing tunable intense coherent radiation in the vicinity 628 cm..sup.-1 失效
标题翻译：用于在628厘米-1附近产生可调谐强相干辐射的装置
公开(公告)号：US4264877A
公开(公告)日：1981-04-28
申请号：US879528
申请日：1978-02-21
申请人： Daniel R. Grischkowsky , Rodney T. Hodgson , Peter P. Sorokin
发明人： Daniel R. Grischkowsky , Rodney T. Hodgson , Peter P. Sorokin
IPC分类号： H01S3/09 , H01S3/091 , H01S3/227 , H01S3/30 , H01S3/22
CPC分类号： H01S3/227 , H01S3/09 , H01S3/091 , H01S3/305
摘要： Apparatus for producing tunable intense coherent radiation at approximately 628 cm..sup.-1 with a line width less than 0.1 cm..sup.-1. The apparatus includes an optical cavity containing a vapor cell and pumping means including at least one optical pumping source for directing energy at the cavity. In one embodiment the cavity encloses a material capable of stimulated emission in response to said pumping. The material has at least three atomic energy levels with at least a first and second atomic energy level separated by a particular energy quantum approximately equal to 628 cm.sup.-1 ; a transition from said first to said second atomic energy level favored over all other possible transitions from said first atomic energy level; said third atomic energy level, from which atoms can be pumped to said first atomic energy level in response to said pumping means. While this is consistent with classical laser operation the apparatus disclosed herein can also be used for stimulated Raman scattering. Tunability is achieved by tuning the pumping sources in the case of stimulated Raman scattering, or with the aid of the Zeeman or Stark effects for classical laser operation. Typical materials are potassium or strontium vapors. Several pumping arrangements are also disclosed.
摘要翻译：用于在线宽小于0.1cm -1的约628cm -1处产生可调谐强相干辐射的装置。该装置包括含有蒸汽池的光学腔和泵送装置，该装置包括至少一个用于在空腔处引导能量的光泵浦源。在一个实施例中，空腔包围能够响应于所述泵送而受激发射的材料。该材料具有至少三个原子能级，其中至少第一和第二原子能级由大约等于628cm -1的特定能量量级分开; 从所述第一原子能级到所述第二原子能级的转换优于来自所述第一原子能级的所有其它可能的转变; 所述第三原子能级别，响应于所述泵送装置，原子可从该原子能级被泵送到所述第一原子能级。虽然这与经典的激光操作一致，但是本文公开的装置也可以用于受激拉曼散射。在受激拉曼散射的情况下，或借助于经典激光操作的塞曼或斯塔克效应，调谐泵浦源可实现可调性。典型的材料是钾或锶蒸汽。还公开了几种泵送装置。

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