Accession Number:

ADP011799

Title:

Nonlinear Response of a Superlattice

Descriptive Note:

Corporate Author:

DARMSTADT UNIV OF TECHNOLOGY (GERMANY) INST OF MICROWAVE TECHNOLOGY

Personal Author(s):

• Fla, T.
• Birnir, B.
• Allen, S. J., Jr.

Report Date:

2000-09-29

Pagination or Media Count:

4.0

Abstract:

In this work we study the nonlinear dc and ac response of a superlattice. We develop asymptotic theories for the I-V curve and ac gain valid in both the very low frequency quasistatic limit, the intermediate frequency limit and high frequency limit. We also explore the I-V curve and ac gain for a quite extensive parameter regime. Parameter regimes which have gain and positive differential conductivity are identified for sufficiently high ac amplitudes. These parameter regimes will be important to understand the nonlinear state of solid state sources in the THz range.

Descriptors:

• *SUPERLATTICES
• *FAR INFRARED RADIATION
• *NONLINEAR ANALYSIS
• SYMPOSIA
• CONDUCTIVITY
• ALTERNATING CURRENT
• ASYMPTOTIC SERIES
• GERMANY
• AMPLITUDE
• DIRECT CURRENT
• SOLID STATE ELECTRONICS
• EQUATIONS OF STATE
• VERY LOW FREQUENCY
• INTERMEDIATE FREQUENCIES
• FREQUENCY STANDARDS

Subject Categories:

• Crystallography
• Optics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE