Accession Number:

ADA010460

Title:

Theory of Multiphonon Absorption in Semiconducting Crystals.

Descriptive Note:

Scientific interim rept.,

Corporate Author:

BROWN UNIV PROVIDENCE R I DEPT OF PHYSICS

Personal Author(s):

• Ying,See-Chen
• Bendow,Bernard
• Yukon,Stanford P.

Report Date:

1975-05-14

Pagination or Media Count:

7.0

Abstract:

A correlation function approach is employed to calculate the multiphonon absorption in semiconducting crystals due to higher order electric moments, in the presence of anharmonicity. The authors found an exponential-like behavior for omegaomega sub O much greater than 1, with broader absorption for increasing anharmonicity. Results of numerical computations within a simplified single-particle model are presented for representative crystals.

Descriptors:

• *SEMICONDUCTORS
• MATHEMATICAL MODELS
• FREQUENCY
• TEMPERATURE
• CRYSTALS
• LASER BEAMS
• PHONONS
• ABSORPTION
• INFRARED RADIATION
• INFRARED OPTICAL MATERIALS
• ELECTRIC MOMENTS

Subject Categories:

• Solid State Physics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE