We discuss the linear dispersive properties of finite one-dimensional photonic band-gap structures. We introduce the concept of a complex effective index for structures of finite length, derived from a generalized dispersion equation that identically satisfies the Kramers-Kronig relations. We then address the conditions necessary for optimal, phase-matched, resonant second harmonic generation. ...

Structural, optical and electronic properties elastic constants of Cd1-x-yZnx HgyTe alloys have been studied by employing the commercial code Castep based on density functional theory. The generalized gradient approximation local were utilized as exchange correlation. Using for compounds, bulk modulus, band gap, Fermi energy Kramers–Kronig relations, dielectric refractive index found through ca...

The reflectance of single crystal LaSrGaO 4 has been measured from ≈ 50 to 40000 cm −1 along the a andc axis. The optical properties have been calculated from a Kramers-Kronig analysis of the reflectance for both polarization. The reflectance curves have been fit using a product of Lorentzian oscillators.

A phase shift electro-optic semiconductor structure that features a Mach-Zehnder Interferometer (MZI) is numerically analyzed. The interferometer considers highly-doped Si-based waveguide can control the by varying refractive index through carrier concentration while applying voltage. To analyze structure, Kramers-Kronig dispersion relations, effective method and Drude model are implemented wit...