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首页> 外文会议>Physics and simulation of optoelectronic devices XXIII >Ultrafast dynamic switching between two lasing states in quantum dot lasers
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Ultrafast dynamic switching between two lasing states in quantum dot lasers

机译：量子点激光器中两个激光状态之间的超快速动态切换

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摘要

The unique carrier processes in quantum dot lasers mean that lasing can be achieved at the ground state (GS) transition wavelength or at the excited state (ES) transmission wavelength or indeed simultaneously at both wavelengths. The details depend on the device characteristics and control parameters such as the pumping current and temperature. When the lasing is from the ES only one can induce all-optical switching between the two states via optical injection into the GS. The high damping of the relaxation oscillations in these devices allows for very fast switching times, with sub-nanosecond transitions easily obtained. Such ultrafast switching times are vastly superior to those obtained with conventional semiconductor lasers and make these devices very attractive for all-optical switching applications. The interplay of the two states leads to a new dynamic regime. Near the boundary of stable locking for the injected GS, deep GS intensity dropouts are observed. Further, each dropout in the GS coincides with a burst in the ES output.
机译：量子点激光器中独特的载流子过程意味着可以在基态（GS）跃迁波长或激发态（ES）传输波长或实际上在两个波长同时实现激光发射。详细信息取决于设备特性和控制参数，例如泵浦电流和温度。当发射来自ES的激光时，只有一个可以通过光学注入GS来诱导两个状态之间的全光切换。这些设备中的弛豫振荡的高阻尼允许非常快速的切换时间，并易于获得亚纳秒级的跃迁。这样的超快开关时间大大优于常规半导体激光器所获得的开关时间，这使得这些设备对于全光开关应用非常有吸引力。两国之间的相互作用导致了新的动态体制。在注入的GS稳定锁定的边界附近，观察到了深GS强度下降。此外，GS中的每个丢失都与ES输出中的突发相一致。

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  • 来源
  • 会议地点 San Francisco CA(US)
  • 作者

    Boguslaw Tykalewicz; David Goulding; Stephen P. Hegarty; Guillaume Huyet; Evgeny A. Viktorov; Bryan Kelleher;

  • 作者单位

    Centre for Advanced Photonics and Process Analysis (CAPPA), Cork Institute of Technology, Rossa Avenue, Cork, Ireland,Tyndall National Institute, University College Cork, Lee Maltings, Cork, Ireland;

    Centre for Advanced Photonics and Process Analysis (CAPPA), Cork Institute of Technology, Rossa Avenue, Cork, Ireland,Tyndall National Institute, University College Cork, Lee Maltings, Cork, Ireland;

    Centre for Advanced Photonics and Process Analysis (CAPPA), Cork Institute of Technology, Rossa Avenue, Cork, Ireland,Tyndall National Institute, University College Cork, Lee Maltings, Cork, Ireland;

    Centre for Advanced Photonics and Process Analysis (CAPPA), Cork Institute of Technology, Rossa Avenue, Cork, Ireland,Tyndall National Institute, University College Cork, Lee Maltings, Cork, Ireland,National Research University of Information Technologies, Mechanics and Optics, St. Petersburg, Russia;

    National Research University of Information Technologies, Mechanics and Optics, St. Petersburg, Russia,Optique Nonlineaire Theorique, Campus Plaine, CP 231, 1050 Bruxelles, Belgium;

    Centre for Advanced Photonics and Process Analysis (CAPPA), Cork Institute of Technology, Rossa Avenue, Cork, Ireland,Tyndall National Institute, University College Cork, Lee Maltings, Cork, Ireland;

  • 会议组织
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Quantum dots; laser dynamics; two-state lasing; switching; all-optical signal processing;

    机译：量子点;激光动力学二态激射交换;全光信号处理;

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