The problem of the creation of a sub-Poissonian radiation source on the bas
is of a semiconductor laser with an external cavity is considered, which op
erates, from the viewpoint of quantum optics, in the single-mode regime. Th
e conditions of the generation of sub-Poissonian radiation, under which the
whole set of subthreshold modes, including the nearest modes of the extern
al (long) cavity, is completely suppressed at room temperature, were experi
mentally revealed and theoretically studied. Single-frequency low-noise las
ing is of interest not only for the creation of nonclassical light sources,
but also for sensitive spectroscopic applications in the classical domain.
(C) 2001 MAIK "Nauka/Interperiodica".