Spectral singularities and threshold gain of a slab laser under illumination of a focused Gaussian beam

Spectral singularities of an infinite planar slab containing homogeneous optically active material at the focal plane of a thin lens are investigated. The field distribution of the beam behind the lens is Gaussian that we approximate by a plane wave concentrated near the optical axis at the focal pl...

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Veröffentlicht in:	Indian journal of physics 2023-05, Vol.97 (6), p.1893-1899
Hauptverfasser:	Bavaghar, Mehrdad, Aalipour, Rasoul, Jamshidi-Ghaleh, Kazem
Format:	Artikel
Sprache:	eng
Schlagworte:	Apertures Astrophysics and Astroparticles Focal plane Gaussian beams (optics) Lenses Optical activity Original Paper Physics Physics and Astronomy Plane waves Singularities Slab lasers
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