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    Deflection of atomic beams with isotope separation by optical resonance radiation using stimulated emission and the A.C. Stark effect
    3.
    发明授权
    Deflection of atomic beams with isotope separation by optical resonance radiation using stimulated emission and the A.C. Stark effect 失效
    通过使用受激发射的光学共振辐射的同位素分离的原子束的偏转和A.C.Stark效应

    公开(公告)号：US4047026A

    公开(公告)日：1977-09-06

    申请号：US646064

    申请日：1976-01-02

    申请人： John Ernst Bjorkholm ,  Paul Foo-Hung Liao

    发明人： John Ernst Bjorkholm ,  Paul Foo-Hung Liao

    IPC分类号： B01D59/34 ,  G21K1/08 ,  H01S1/00

    CPC分类号： B01D59/34 ,  G21K1/08

    摘要： Improved atomic beam deflection and improved isotope separation, even in vapors, is proposed by substituting the A.C. Stark effect for the baseband chirp of the pushing beam in the prior proposal by I. Nebenzahl et al, Applied Physics Letters, Vol. 25, page 327 (September 1974). The efficiency inherent in re-using the photons as in the Nebenzahl et al proposal is retained; but the external frequency chirpers are avoided. The entire process is performed by two pulses of monochromatic coherent light, thereby avoiding the complication of amplifying frequency-modulated light pulses. The A.C. Stark effect is provided by the second beam of coherent monochromatic light, which is sufficiently intense to chirp the energy levels of the atoms or isotopes of the atomic beam or vapor. Although, in general, the A.C. Stark effect will alter the isotope shift somewhat, it is not eliminated. In fact, the appropriate choice of frequencies of the pushing and chirping beams may even relax the requirements with respect to the isotope absorption line shift for effective separation. That is, it may make the isotope absorption lines more easily resolvable.

    摘要翻译： 提出了改进的原子束偏转和改进的同位素分离，即使在蒸气中，通过在A.Nebenzahl等人的Applied Physics Letters，Vol。 25，第327页（1974年9月）。 保留了Nebenzahl等提案中重新使用光子所固有的效率; 但是避免了外部频率啁啾声。 整个过程由两个单色相干光脉冲执行，从而避免放大调频光脉冲的复杂性。 A.C.Stark效应由相干单色光的第二光束提供，其相当强烈以啁啾原子束或蒸气的原子或同位素的能级。 尽管一般来说，A.C.Stark效应会有所改变，但并没有消除它的同位素偏移。 事实上，推动和啁啾波束的频率的适当选择甚至可以放松相对于有效分离的同位素吸收线移位的要求。 也就是说，它可以使得同位素吸收线更容易解决。

    Method and apparatus for phase matching by adjustment of the fundamental frequencies
    4.
    发明授权
    Method and apparatus for phase matching by adjustment of the fundamental frequencies 失效
    通过调整基频进行相位匹配的方法和装置

    公开(公告)号：US4058739A

    公开(公告)日：1977-11-15

    申请号：US746161

    申请日：1976-11-30

    申请人： John Ernst Bjorkholm ,  Gary Carl Bjorklund ,  Paul Foo-Hung Liao

    发明人： John Ernst Bjorkholm ,  Gary Carl Bjorklund ,  Paul Foo-Hung Liao

    IPC分类号： G02F1/35 ,  H03F7/00

    CPC分类号： G02F1/3534

    摘要： A method and apparatus for phase-matching the output of a four-wave nonlinear optical mixing process is disclosed. The method produces phase-matching that is independent of variations in density of the conversion medium and extends over the entire frequency spectrum from the far infrared to the vacuum ultraviolet. The phase-matching is accomplished by adjustment of the frequencies of three input lasers so that the desired frequency is produced, the condition for two-photon resonance enhancement is met, and the phase-matching condition is satisfied.

    摘要翻译： 公开了一种用于对四波非线性光学混合过程的输出进行相位匹配的方法和装置。 该方法产生与转换介质的密度变化无关的相位匹配，并且在从远红外线到真空紫外线的整个频谱上延伸。 通过调整三个输入激光器的频率来实现相位匹配，从而产生期望的频率，满足双光子谐振增强的条件，并且满足相位匹配条件。