Sagnac interferometry and self-Kerr nonlinearity dependent photon drag

Abstract

Sagnac interferometry (Mach-Zehnder type) has been used for the self-Kerr nonlinearity (SKN) dependent photon drag. The presence of SKN results in an improvement in the light drag angles from±10 micro-radians to±1 centi-radians. Additionally, the system exhibits Electromagnetically induced transparency (EIT) with the presence of SKN. Optical angular momentum (OAM) dependency in the probe field is introduced for controlled light dragging by allowing it to pass through a spiral phase plate. Improved positive and negative group indices are noticed respectively, in the presence and absence of SKN. Consequently, reduced relativistic group velocities for the propagating beams are observed when SKN is present in the system. The outcomes displayed has the potential to be used in many different sensing schemes.

Sagnac interferometry and the impact of conductivity-dependent Raman gain on rotary photon drag

“…In a recent theoretical investigation, Ullah et al [47] enhanced the RPD angles from micro-radians to centi-radians in a MZ-type SI. Most recently, Ullah et al [48] utilized self-Kerr nonlinearity in a SI for the enhancement of RPD.…”

The impact of cross-Kerr nonlinearity on rotary photon drag and temporal cloaking in Sagnac interferometry

“…Similarly, Ullah et al [24] utilized a Sagnac interferometer for the investigation of Raman gain dependent RPD enhancement. Recently, self-Kerr nonlinearity has been employed for controlled RPD in Sagnac interferometry of the Mach-Zehnder type [25]. Most recently, many other schemes have been proposed for improved RPD.…”