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Updated: Jun 21, 2026

Silicon Metal-oxide-semiconductor Quantum Dots for Single-electron Pumping
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Growth parameter optimization for fast quantum dot SESAMs.

D J H C Maas1, A-R Bellancourt, M Hoffmann

  • 1Department of Physics, Institute of Quantum Electronics, ETH Zurich, Zurich, Switzerland. maas@phys.ethz.ch

Optics Express
|July 8, 2009
PubMed
Summary
This summary is machine-generated.

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Quantum dot (QD) semiconductor saturable absorber mirrors (SESAMs) offer greater design flexibility. QD growth parameters independently control saturation fluence and modulation depth for optimized SESAM performance.

Area of Science:

  • Optoelectronics
  • Materials Science
  • Nanotechnology

Background:

  • Semiconductor saturable absorber mirrors (SESAMs) are crucial for laser mode-locking.
  • Quantum well (QW) SESAMs have limitations in design flexibility.
  • Quantum dot (QD) absorbers offer enhanced design freedom for SESAMs.

Purpose of the Study:

  • To investigate the impact of QD growth parameters and annealing on SESAM optical properties.
  • To establish design guidelines for QD-SESAMs with specific performance characteristics.

Main Methods:

  • Fabrication of self-assembled InAs QD-SESAMs.
  • Variation of QD dot density and growth temperature.
  • Post-growth annealing treatments.
  • Measurement of nonlinear reflectivity and carrier recombination dynamics.

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Compact Quantum Dots for Single-molecule Imaging
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Published on: June 3, 2015

Compact Quantum Dots for Single-molecule Imaging
17:14

Compact Quantum Dots for Single-molecule Imaging

Published on: October 9, 2012

Main Results:

  • QD density directly correlates with modulation depth.
  • Growth parameters and annealing influence SESAM saturation fluence and recovery time.
  • Demonstrated independent control over saturation fluence and modulation depth.

Conclusions:

  • QD-SESAMs provide superior design flexibility compared to QW-SESAMs.
  • Optimized QD growth and annealing enable tailored SESAM performance.
  • Design guidelines facilitate the creation of QD-SESAMs for applications like VECSEL mode-locking.