Effect of uniaxial stress on the saturation of intervalence-band absorption in p-type Ge

Journal Article · Fri Jul 15 04:00:00 EDT 1983 · Phys. Rev. B: Condens. Matter; (United States)

DOI:https://doi.org/10.1103/PhysRevB.28.586· OSTI ID:5696610

James, R B; Smith, D L

A calculation is presented of the effect of a compressive uniaxial stress on the saturation of the intervalence-band absorption in p-type Ge for light having a wavelength of 10.6 ..mu..m. The intensity dependence of the absorption coefficient can be approximated by the expression for an inhomogeneously broadened two-level model where the value for the saturation intensity depends on the direction of applied stress, magnitude of the stress, and polarization of the light. Values of the saturation intensity are reported for compressive stress along the (001) direction and light polarized along the (001) and (100) directions, and for compressive stress along the (111) direction and light polarized along the (111) and (011) directions. For the directions of stress and light polarization investigated, we found that the saturation intensity is significantly smaller when the direction of polarization of the light is parallel to the stress direction. For light polarization perpendicular to the direction of applied stress, there is no significant change in the saturation intensity for compressive uniaxial stresses below about 7 x 10/sup 9/ dyn cm/sup -2/.

• Research Organization: Solid State Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830
• OSTI ID: 5696610
• Journal Information: Phys. Rev. B: Condens. Matter; (United States), Journal Name: Phys. Rev. B: Condens. Matter; (United States) Vol. 28:2; ISSN PRBMD
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360104* -- Metals & Alloys-- Physical Properties
ABSORPTIVITY
BAND THEORY
ELEMENTS
GERMANIUM
LINE BROADENING
MATERIALS
METALS
NONLINEAR PROBLEMS
OPTICAL PROPERTIES
P-TYPE CONDUCTORS
PHYSICAL PROPERTIES
POLARIZATION
SATURATION
SEMICONDUCTOR MATERIALS
STRESSES