Phys. Rev. A 58, 2467–2471 (1998)Spectral properties of an injected laserReceived 21 January 1998; published in the issue dated September 1998 The theory in which the laser is interpreted as a nonlinear amplifier and filter is applied to the calculation of its spectral density in the case of a homogeneous medium. The method is extended to an injected laser in which the source term includes both the spontaneous emission and the injected signal. Linewidth narrowing or widening, spectral amplification or attenuation are described, using simple semiclassical formulas. © 1998 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevA.58.2467
DOI:
10.1103/PhysRevA.58.2467
PACS:
42.55.Ah, 42.55.Lt, 42.60.Da
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