3-dB Bandwidth Enhancement via the Gain-Lever Effect in Quantum-Dot Lasers

Abstract

We investigate the small-signal modulation response of two-section, gain-lever, quantum-dot semiconductor lasers. A three-pole modulation function is derived from a 3-D set of rate equations, and a 70% 3-dB bandwidth enhancement is computed and experimentally realized in an undoped quantum-dot gain-lever laser under extreme asymmetric-bias conditions. Finally, it is demonstrated that the 3-dB bandwidth is three times the free-running relaxation oscillation frequency in these types of laser structures, as opposed to 1.55 times in the case of conventional single-section lasers.

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Document Details

Document Type
Technical Report
Publication Date
Jul 01, 2010
Accession Number
ADA535304

Entities

People

  • Luke F. Lester
  • Nader A. Naderi
  • Vassilios Kovanis
  • Yang Li

Organizations

  • Air Force Research Laboratory

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Air Force
  • Air Force Research Laboratories
  • Bandwidth
  • Distributed Feedback Lasers
  • Equations
  • Frequency
  • Laser Diodes
  • Lasers
  • Materials
  • Microwave Photonics
  • Modulation
  • Photons
  • Quantum Dot Lasers
  • Quantum Dots
  • Quantum Wells
  • Semiconductor Lasers
  • Semiconductors

Fields of Study

  • Physics

Readers

  • Microwave Engineering.
  • Optical Physics and Photonics.

Technology Areas

  • Directed Energy
  • Microelectronics
  • Quantum Computing