Accession Number:

ADA214594

Title:

The Precision Imaging System (PIMS) Concept

Descriptive Note:

Final technical rept.

Corporate Author:

ARMY BALLISTIC RESEARCH LAB ABERDEEN PROVING GROUND MD

Report Date:

1989-11-01

Pagination or Media Count:

56.0

Abstract:

Direct modulation of a buried heterostructure BH Indium Gallium Arsenide Phosphide laser diode was performed up to 18 GHz, and FM properties were observed. The number of lasing modes increased with increasing modulation depth. For a given rf power, the FM index went from 0.7 to 0 as the modulation frequency was increased. These measurements indicate that the nonlinear gain effects mainly influence the modulation characteristics of this laser, and wider bandwidths and modulation indexes can be achieved in this type of multimode device. Keywords Semiconductor lasers Direct current modulation Fast detectors Nonlinear gain effects Modulation index FM properties.

Subject Categories:

  • Lasers and Masers
  • Electrooptical and Optoelectronic Devices
  • Optical Detection and Detectors
  • Solid State Physics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE