Infrared-absorption spectrum of free carriers in polar semiconductors. Progress report, July 1, 1981-June 30, 1982

Technical Report · Mon Feb 01 04:00:00 EST 1982

OSTI ID:5418016

Jensen, B

The high rate of change in integrated electronics, laser, and semiconductor device characteristics, generated by ongoing improvement in fabrication technology leading to smaller and smaller devices, has necessitated a reexamination of the foundations of transport theory. Of particular interest is the formulation of the necessary quantum extension of classical or quasi-classical theory in the limits of small length scales, high frequencies, and high field intensities. A fundamental mechanism by which optical materials fail under intense illumination, the problem of electron heating by multiphoton free carrier absorption or inverse bremsstrahlung in an intense radiation field, has been the primary topic of investigation during the preceding year. In addition, the effect on the real and imaginary parts of the complex refractive index, and hence on the reflectivity and transmission of a compound semiconductor, of quantum effects at high frequencies have been studied. The real and imaginary parts of the complex refractive index and the reflectivity have been calculated for samples of InP, GaAs, and InAs as functions of frequency and carrier concentration, in terms of a quantum extension of the Drude theory. A summary of results which have been presented in the literature in the preceding year is given.

• Research Organization: Boston Univ., MA (USA)
• DOE Contract Number: AS02-79ER10444
• OSTI ID: 5418016
• Report Number(s): DOE/ER/10444-5; ON: DE82009101
• Country of Publication: United States
• Language: English

Related Subjects

440300 -- Miscellaneous Instruments-- (-1989)
47 OTHER INSTRUMENTATION
656000* -- Condensed Matter Physics
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ABSORPTION SPECTRA
ARSENIC COMPOUNDS
ARSENIDES
ATTENUATION
CHARGED-PARTICLE TRANSPORT THEORY
DOCUMENT TYPES
ELECTROMAGNETIC RADIATION
GALLIUM ARSENIDES
GALLIUM COMPOUNDS
INDIUM ARSENIDES
INDIUM COMPOUNDS
INDIUM PHOSPHIDES
INFRARED RADIATION
LIGHT TRANSMISSION
MATERIALS
OPTICAL PROPERTIES
PHOSPHIDES
PHOSPHORUS COMPOUNDS
PHYSICAL PROPERTIES
PNICTIDES
RADIATIONS
REFLECTIVITY
REFRACTIVITY
REVIEWS
SEMICONDUCTOR MATERIALS
SPECTRA
SURFACE PROPERTIES
TRANSPORT THEORY