Carrier-induced refractive index change in InN
Zakhleniuk, N. A.
Physica Status Solidi (C) Current Topics in Solid State Physics
511 - 513
Item Usage Stats
MetadataShow full item record
Rapid development of InN technology demands comprehensive assessment of the electronic and optoelectronic potential of this material. In this theoretical work the effect of free electrons on the optical properties of the wurtzite phase of InN is investigated. The blue shift of the optical absorption edge by the free-carrier band filling is known as the Burstein-Moss effect for which InN offers to be a very suitable candidate as has been recently demonstrated experimentally. Due to well known Kramers-Kronig relations, a change in absorption is accompanied by a change in the index of refraction. Considering n-type InN samples with free electron concentrations ranging from 5x10 17 to 5x1020 cm-3, and employing a nonlocal empirical pseudopotential band structure, it is shown that this leads to a few percent change of the index of refraction. These carrier-induced refractive index changes can be utilized in optical switches, futhermore it needs to be taken into account in the design of InN-based optical devices such as lasers and optical modulators.
Free electron concentration
Index of refraction
Induced refractive index
Optical absorption edge
Semiconductor quantum wells
Published Version (Please cite this version)http://dx.doi.org/10.1002/pssc.200777471
Showing items related by title, author, creator and subject.
Experimental study of subwavelength focusing by lefthanded metamaterials with a negative refractive index Özbay, Ekmel; Aydin, K. (2007)Two dimensional (2D) left-handed metamaterials (LHM) exhibiting negative refraction and subwavelength imaging are studied experimentally. A left-handed transmission band is observed at the frequencies where both dielectric ...
Özbay, Ekmel (IEEE, 2009-10)In recent years, there has been a burgeoning interest in rapidly growing field of metamaterials due to their unprecedented properties unattainable from ordinary materials. Veselago pointed out that a material exhibiting ...
Özbay, Ekmel; Aydın, Koray (SPIE, 2008-01)We review experimental studies performed on left-handed metamaterials (LHM) at microwave frequencies. The metamaterial structure is composed of periodic arrays of split-ring resonators and wire meshes and exhibits a ...