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3 results

  • 3 - Long-Wavelength Mid-Infrared Quantum Cascade Lasers

  • from Part I - Bandstructure Engineering, Modeling and State-of-the-Art QCLs
  • Edited by Dan Botez, University of Wisconsin, Madison, Mikhail A. Belkin, Technische Universität München
  • Book:
    Mid-Infrared and Terahertz Quantum Cascade Lasers
    Published online:
    25 August 2023
    Print publication:
    14 September 2023, pp 102-137

  • Summary

    The chapter reviews long wavelength mid-infrared quantum cascade lasers (QCLs) emitting between 15 and 28 μm. Historically, 15 μm was a border wavelength above which the QCL performances dramatically degraded, which was partly due to an increase in optical losses in the devices with approaching the Reststrahlen band. This intrinsic limitation caused by multi-phonon absorption sets forbidden or favorable spectral areas depending on the employed materials. The chapter considers specific properties of long wavelength mid-infrared QCLs based on different materials, as well as more general issues related to the QCL design in this long-wavelength frontier of the mid-infrared. The discussed results are presented in the chronological order for each QCL material system, which allows the reader to follow the advances in the field.

Semiconductor Laser Photonics
  • 2nd edition
  • Mauro Nisoli
  • Published online:
    10 November 2022
    Print publication:
    24 November 2022
  • This modern text provides detailed coverage of the important physical processes underpinning semiconductor devices. Advanced analysis of the optical properties of semiconductors without the requirement of complex mathematical formalism allows clear physical interpretation of all obtained results. The book describes fundamental aspects of solid-state physics and the quantum mechanics of electron-photon interactions, in addition to discussing in detail the photonic properties of bulk and quantum well semiconductors. The final six chapters focus on the physical properties of several widely-used photonic devices, including distributed feedback lasers, vertical-cavity surface-emitting lasers, quantum dot lasers, and quantum cascade lasers. This book is ideal for graduate students in physics and electrical engineering and a useful reference for optical scientists.

  • A review of applications of principles of quantum physics in oncology: do quantum physics principles have any role in oncology research and applications?

  • Renata Raghunandan, Meaghan Voll, Ernest Osei, Johnson Darko, Raymond Laflamme
  • Journal:
    Journal of Radiotherapy in Practice / Volume 18 / Issue 4 / December 2019
    Published online by Cambridge University Press:
    30 April 2019, pp. 383-394
  • Background:

    Research in the applications of the principles of quantum physics in oncology has progressed significantly over the past decades; and several research groups with professionals from diverse scientific background, including electrical engineers, mathematicians, biologists, atomic physicists, computer programmers, and biochemists, are working collaboratively in an unprecedented and pioneering economic, organisational and human effort searching for a wider and more effective, potentially definitive, understanding of the cancers. It is hypothesised that the principles of quantum physics could open new and broader understanding of the cancers and the development of new effective, targeted, accurate, personalised and possibly definitive cancer treatment.

    Materials and methods:

    This paper reports on a review of recent studies in the field of the applications of the principles of quantum physics in biology, chemistry, biochemistry and quantum physics in cancer research, including quantum physics principles and cancer, quantum modelling techniques, quantum dots and its applications in oncology, quantum cascade laser histopathology and quantum computing applications.

    Conclusions:

    The applications of the principles of quantum physics in oncology, chemistry and biology are providing new perspectives and greater insights into a long-studied disease, which could result in a greater understanding of the cancers and the potential for personalised and definitive treatment methods.