Reflectionless transmission of light waves with unitary transmittance is shown to occur in a certain class of gain-grating structures and phase-conjugation mirrors in the unstable (above-threshold) regime. Such structures are synthesized by means of the Darboux method developed in the context of supersymmetric relativistic quantum mechanics. Transparency is associated to superluminal pulse transmission.
© 2010 Optical Society of America
Lasers and Laser Optics
Original Manuscript: August 30, 2010
Manuscript Accepted: October 18, 2010
Published: November 12, 2010
S. Longhi, "Transparency in Bragg scattering and phase conjugation," Opt. Lett. 35, 3844-3846 (2010)