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    • 1. 发明授权
    • Microlaser
    • 微型激光
    • US5859867A
    • 1999-01-12
    • US565344
    • 1995-11-30
    • Kyungwon AnJames J. ChildsRamachandra Rao DasariMichael S. Feld
    • Kyungwon AnJames J. ChildsRamachandra Rao DasariMichael S. Feld
    • H01S3/06H01S3/091
    • H01S3/08031H01S3/0604H01S3/10
    • In a single-atom microlaser, a pair of opposed reflectors define a high-finesse or "high-Q" optical cavity therebetween. A source delivers a stream of multiple-energy-level atoms or particles into the cavity. Each individual atom in the stream is excited by a pump from a lower energy level to an upper energy level before injection into the cavity. The cavity resonance frequency is substantially matched to the frequency of a photon emitted by each atom as it enters the cavity. The photon is emitted due to a transition in energy between the upper level and lower level of each atom. In this manner, upon entry of a sequence of individual atoms into the cavity for example, the average number of photons resonating in the cavity exceeds one and the average number of atoms in the cavity is less than one. The photons are sustained in the high-Q cavity for a long enough time period such that the photon field interacts with the next atom in the stream. A beam of coherent light in the optical frequency spectrum is emitted from the cavity.
    • 在单原子微激光器中,一对相对的反射器在它们之间限定高精度或“高Q”光学腔。 源将多能级原子或颗粒流输送到空腔中。 流中的每个单独的原子在注入空腔之前被泵从较低的能级激发到较高的能级。 空腔谐振频率基本上与每个原子在进入腔体时发射的光子的频率相匹配。 光子由于每个原子的上层和下层之间的能量过渡而被发射。 以这种方式,例如,当单个原子序列进入空腔时,在空腔中谐振的光子的平均数量超过1,并且空腔中的平均原子数小于1。 光子在高Q空穴中持续足够长的时间段,使得光子场与流中的下一个原子相互作用。 光学频谱中的相干光束从腔体发射出来。