Spectral singularities, threshold gain, and output intensity for a slab laser with mirrors

Dogan K., Mostafazadeh A., Sarisaman M.

ANNALS OF PHYSICS, vol.392, pp.165-178, 2018 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 392
  • Publication Date: 2018
  • Doi Number: 10.1016/j.aop.2018.02.013
  • Journal Name: ANNALS OF PHYSICS
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.165-178
  • Keywords: Nonlinear spectral singularity, Kerr nonlinearity, Threshold gain, Laser output intensity, CPA-LASER
  • Istanbul University Affiliated: Yes


We explore the consequences of the emergence of linear and non-linear spectral singularities in TE modes of a homogeneous slab of active optical material that is placed between two mirrors. We use the results together with two basic postulates regarding the behavior of laser light emission to derive explicit expressions for the laser threshold condition and output intensity for these modes of the slab and discuss their physical implications. In particular, we reveal the details of the dependence of the threshold gain and output intensity on the position and properties of the mirrors and on the real part of the refractive index of the gain material. (C) 2018 Elsevier Inc. All rights reserved.