Giant amplification of modes in parity-time symmetric waveguides

Abstract

The combination of the interference with the amplification of modes in a waveguide with gain and losses can result in a giant amplification of the propagating beam, which propagates without distortion of its average amplitude. An increase of the gain-loss gradient by only a few times results in a magnification of the beam by a several orders of magnitude.

4 pages, 1 figure, 1 table; accepted for Physics Letters A

References in corpus (3)

• Physical realization of $\mathcal{P}\mathcal{T}$-symmetric potential scattering in a planar slab waveguide
• Interactions of Hermitian and non-Hermitian Hamiltonians
• Propagation of Electromagnetic Waves in Linear Media and Pseudo-Hermiticity

Cited by in corpus (5)

• Experimental Observation of Partial Parity-Time Symmetry and Its Phase Transition with a Laser-Driven Cesium Atomic Gas
• Optical fluxes in coupled $\mathcal{P}\mathcal{T}$-symmetric photonic structures
• Resilience of $\mathcal{P}\mathcal{T}$ symmetry against stochasticity in a gain-loss balanced oscillator
• Eigenvalues bifurcating from the continuum in two-dimensional potentials generating non-Hermitian gauge fields
• Superexponential amplification, power blowup, and solitons sustained by non-Hermitian gauge potentials