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    ZHANG DENG-YU. LASING WITHOUT INVERSION AND ORIGIN OF GAIN IN A \Lambda SYSTEMJ. Chin. Phys. B, 1997, 6(2): 92-96.
    ZHANG DENG-YU. LASING WITHOUT INVERSION AND ORIGIN OF GAIN IN A \Lambda SYSTEMJ. Chin. Phys. B, 1997, 6(2): 92-96.
  • LASING WITHOUT INVERSION AND ORIGIN OF GAIN IN A \Lambda SYSTEM

    • A three-level \Lambda-type atomic system is pumped by an incoherent radiation field. The system lases without population inversion in the steady state. We analyze the inversionless gain and origin of the gain.
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