aqora

Investigation of light amplification by enhanced internal reflection Part I Theoretical reflectance and transmittance of an exponentially nonuniform gain region

R. F. Cybulski, Mark P. Silverman

We investigate the reflection of plane waves of s and p polarization from the interface between a homogeneous transparent medium and an amplifying medium with a gain profile decreasing exponentially with depth of penetration. For angles of incidence less than critical angle, the reflectance curves are essentially the same as those deduced from the usual Fresnel formulas for two transparent media. In the vicinity of critical angle, the reflection coefficients are virtually the same for both polarizations and are greater than unity. Beyond critical angle, the reflectances fall toward unity as grazing incidence is approached. Both the reflectance and the far-field transmittance peak in the immediate vicinity of critical angle. For angles less than critical angle, the transmittance can be 2 orders of magnitude greater than the reflectance. Certain values of gain parameters and incident angle lead to singularities in the theoretical reflectance. At these points the usual neglect of the effect of the transmitted wave on the population inversion is no longer valid.We investigate the reflection of plane waves of s and p polarization from the interface between a homogeneous transparent medium and an amplifying medium with a gain profile decreasing exponentially with depth of penetration. For angles of incidence less than critical angle, the reflectance curves are essentially the same as those deduced from the usual Fresnel formulas for two transparent media. In the vicinity of critical angle, the reflection coefficients are virtually the same for both polarizations and are greater than unity. Beyond critical angle, the reflectances fall toward unity as grazing incidence is approached. Both the reflectance and the far-field transmittance peak in the immediate vicinity of critical angle. For angles less than critical angle, the transmittance can be 2 orders of magnitude greater than the reflectance. Certain values of gain parameters and incident angle lead to singularities in the theoretical reflectance. At these points the usual neglect of the effect of the transmitted wave on the population inversion is no longer valid.

Journal of the Optical Society of AmericaDec 1, 198316 citations

Enhanced internal reflection from a region with exponentially decreasing gain (A)

Charles K. Carniglia, R. F. Cybulski

Journal of the Optical Society of America AOct 1, 19760 citations

Reduced Reflection of Light in Random Amplifying Media

Seng Fatt Liew, Hui W. Cao

We investigate the effect of light amplification on the minimum reflection channel in a random medium. Enhanced destructive interference of the excited resonant modes may cause a reduction in the minimum reflection with increasing gain.

Frontiers in OpticsJan 1, 20150 citations

Total Internal Reflection in Gain Media

Hanan Herzig Sheinfux, Bo Zhen, Ido E. Kaminer +1 more

We resolve the controversy around total internal reflection from gain media, propose new effects of (extremely) amplified reflection from a single interface, and snow sensitivity to subwavelengtn features.

Jan 1, 20151 citation

Reflection of light from an exponentially nonuniform amplifying medium in the case of parallel polarization

Enhanced internal reflection from an exponential amplifying region

Abstract

Related papers

Enhanced internal reflection from an exponential amplifying region

Abstract

Related papers