Giant gain enhancement in photonic crystals with a degenerate band edge
نویسندگان
چکیده
منابع مشابه
Frozen light in photonic crystals with degenerate band edge.
Consider a plane monochromatic wave incident on a semi-infinite periodic structure. What happens if the normal component of the transmitted wave group velocity vanishes? At first sight, zero normal component of the transmitted wave group velocity simply implies total reflection of the incident wave. But we demonstrate that total reflection is not the only possible outcome. Instead, the transmit...
متن کاملPhotonic crystals with a degenerate band edge: Field enhancement effects and sensitivity analysis
Photonic crystals PhCs with a degenerate band edge DBE are dispersion-tailored materials composed of a periodic arrangement of misaligned anisotropic dielectric layers and an isotropic dielectric layer. DBE PhCs yield an approximately quartic dispersion relation just below the DBE frequency rather than the conventional quadratic dispersion relation present below a regular band edge RBE . We pre...
متن کاملNumerical study of photonic crystals with a split band edge: Polarization dependence and sensitivity analysis
We examine photonic crystals PhC made of periodic stacks of anisotropic dielectric layers with a split band edge SBE on the band diagram. Just below the band edge frequency, the dispersion relation k of SBE PhCs can be approximated as a linear combination of a quadratic term and a quartic term. This is in contrast to regular conventional band edge PhCs, which produce a quadratic dispersion rela...
متن کاملPulse compression and gain enhancement in a degenerate optical parametric amplifier based on aperiodically poled crystals.
We describe theoretically a method of obtaining pulse compression and simultaneously improving amplification in a degenerate optical parametric amplifier by use of quasi-phase-matched engineered crystals. The scheme combines the possibility of increasing the signal spectral bandwidth that is offered by a degenerate parametric amplifier with the ability of engineered aperiodically poled crystals...
متن کاملInfluence of optical Kerr coefficient on photonic band structures of hexagonal-lattice function photonic crystals
In this paper, we have studied the photonic band structure of function photonic crystals in which the dielectric constant of the scattering centers (rods) is a function of space coordinates. The under-studied lattice is hexagonal and cross section of rods has a circular symmetry embedded in the air background. Photonic band structures for both electric and magnetic polarizations of the electrom...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Physical Review B
سال: 2016
ISSN: 2469-9950,2469-9969
DOI: 10.1103/physrevb.93.024301