Modeling and characterization of pulse shape and pulse train dynamics in two-section passively mode-locked quantum dot lasers

R. Raghunathan, J. K. Mee, M. T. Crowley, F. Grillot, V. Kovanis, L. F. Lester

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

A nonlinear delay differential equation model for passive mode-locking in semiconductor lasers, seeded with parameters extracted from the gain and loss spectra of a quantum dot laser, is employed to simulate and study the dynamical regimes of mode-locked operation of the device. The model parameter ranges corresponding to these regimes are then mapped to externally-controllable parameters such as gain current and absorber bias voltage. Using this approach, a map indicating the approximate regions corresponding to fundamental and harmonically mode locked operation is constructed as a function of gain current and absorber bias voltage. This is shown to be a highly useful method of getting a sense of the highest repetition rates achievable in principle with a simple, two-section device, and provides a guideline toward achieving higher repetition rates by simply adjusting external biasing conditions instantaneously while the device is in operation, as opposed to re-engineering the device with additional passive or saturable absorber sections. The general approach could potentially aid the development of numerical modeling techniques aimed at providing a systematic guideline geared toward developing microwave and RF photonic sources for THz applications.

Original languageEnglish
Title of host publicationPhysics and Simulation of Optoelectronic Devices XXI
DOIs
Publication statusPublished - May 29 2013
Externally publishedYes
EventPhysics and Simulation of Optoelectronic Devices XXI - San Francisco, CA, United States
Duration: Feb 4 2013Feb 7 2013

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume8619
ISSN (Print)0277-786X

Other

OtherPhysics and Simulation of Optoelectronic Devices XXI
CountryUnited States
CitySan Francisco, CA
Period2/4/132/7/13

Keywords

  • Quantum dot lasers
  • delay differential equation model
  • harmonic mode-locking
  • nonlinear dynamics
  • passive mode-locking
  • pulse characteristics

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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