Temperature dependence of electroabsorption dynamics in an InAs quantum-dot saturable absorber at 1.3 μm and its impact on mode-locked quantum-dot lasers

Maria Ana Cataluna, D. B. Malins, Alvaro Gomez-Iglesias, W. Sibbett, Alan Miller, E. U. Rafailov

Research output: Contribution to journalArticle

Abstract

We report temperature-dependent absorption recovery times in an InAs p-i-n ridge waveguide quantum-dot modulator under low reverse bias, investigated via subpicosecond pump-probe measurements. The measured decrease in absorption recovery time with increasing temperature (293-319 K) is in excellent agreement with a thermionic emission model. A similar trend in pulse duration with increasing temperature is also observed from a two-section mode-locked quantum-dot laser fabricated from a similar epitaxial structure. These measurements confirm the key role of the absorber recovery time in the reduction in the pulses generated by two-section mode-locked quantum-dot lasers, both at room and elevated temperatures. © 2010 American Institute of Physics.

Original languageEnglish
Article number121110
Pages (from-to)-
Number of pages3
JournalApplied Physics Letters
Volume97
Issue number12
DOIs
Publication statusPublished - 20 Sep 2010

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absorbers
quantum dots
temperature dependence
recovery
lasers
temperature
thermionic emission
ridges
modulators
pulse duration
pumps
waveguides
trends
physics
probes
room temperature
pulses

Keywords

  • AMPLIFIERS
  • EMISSION

Cite this

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title = "Temperature dependence of electroabsorption dynamics in an InAs quantum-dot saturable absorber at 1.3 μm and its impact on mode-locked quantum-dot lasers",
abstract = "We report temperature-dependent absorption recovery times in an InAs p-i-n ridge waveguide quantum-dot modulator under low reverse bias, investigated via subpicosecond pump-probe measurements. The measured decrease in absorption recovery time with increasing temperature (293-319 K) is in excellent agreement with a thermionic emission model. A similar trend in pulse duration with increasing temperature is also observed from a two-section mode-locked quantum-dot laser fabricated from a similar epitaxial structure. These measurements confirm the key role of the absorber recovery time in the reduction in the pulses generated by two-section mode-locked quantum-dot lasers, both at room and elevated temperatures. {\circledC} 2010 American Institute of Physics.",
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Temperature dependence of electroabsorption dynamics in an InAs quantum-dot saturable absorber at 1.3 μm and its impact on mode-locked quantum-dot lasers. / Cataluna, Maria Ana; Malins, D. B.; Gomez-Iglesias, Alvaro; Sibbett, W.; Miller, Alan; Rafailov, E. U.

In: Applied Physics Letters, Vol. 97, No. 12, 121110, 20.09.2010, p. -.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Temperature dependence of electroabsorption dynamics in an InAs quantum-dot saturable absorber at 1.3 μm and its impact on mode-locked quantum-dot lasers

AU - Cataluna, Maria Ana

AU - Malins, D. B.

AU - Gomez-Iglesias, Alvaro

AU - Sibbett, W.

AU - Miller, Alan

AU - Rafailov, E. U.

PY - 2010/9/20

Y1 - 2010/9/20

N2 - We report temperature-dependent absorption recovery times in an InAs p-i-n ridge waveguide quantum-dot modulator under low reverse bias, investigated via subpicosecond pump-probe measurements. The measured decrease in absorption recovery time with increasing temperature (293-319 K) is in excellent agreement with a thermionic emission model. A similar trend in pulse duration with increasing temperature is also observed from a two-section mode-locked quantum-dot laser fabricated from a similar epitaxial structure. These measurements confirm the key role of the absorber recovery time in the reduction in the pulses generated by two-section mode-locked quantum-dot lasers, both at room and elevated temperatures. © 2010 American Institute of Physics.

AB - We report temperature-dependent absorption recovery times in an InAs p-i-n ridge waveguide quantum-dot modulator under low reverse bias, investigated via subpicosecond pump-probe measurements. The measured decrease in absorption recovery time with increasing temperature (293-319 K) is in excellent agreement with a thermionic emission model. A similar trend in pulse duration with increasing temperature is also observed from a two-section mode-locked quantum-dot laser fabricated from a similar epitaxial structure. These measurements confirm the key role of the absorber recovery time in the reduction in the pulses generated by two-section mode-locked quantum-dot lasers, both at room and elevated temperatures. © 2010 American Institute of Physics.

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