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Terahertz and Infrared Quantum Cascade Lasers

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Terahertz Technology

Part of the book series: Lecture Notes in Electrical Engineering ((LNEE,volume 77))

Abstract

The generation of mid-infrared and terahertz portion of the optical spectrum using the Quantum Cascade Laser (QCL) technology has the potential of making cheap, powerful optical, room temperature sources. In the mid-infrared spectral region, where continuous wave room temperature operation of the QCL devices was achieved, the main goal will be to further broaden the frequency range over which these high performances are achieved. Other important topic is the developing of devices with a very large active broadband region, with tuning range of more than 250 cm−1 for a laser emission centered at 1000 cm−1. However, the overall level of performance of the THz QCL’s (higher operating temperatures and longer wavelengths) in comparison to mid-infrared is much lower with the maximum known operating temperature and wavelength still being 160 K and 180 μm (1.7 THz) respectively. For this reason, the focus is to find solutions for optical laser cavity. Finally, as far as the photonic side is concerned, the concentration is on the realization of waveguides and resonators based on the sandwiching technique used for two metallic layers surface plasma.

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Authors and Affiliations

  1. Nanophotonics, School of Engineering-Emerging Technology, University of Tabriz, Emam Khomeini Bolv. 29 Bahman, Tabriz, 51666, Iran

    Ali Rostami & Hassan Rasooli

  2. Faculty of the Electrical and Computer Engineering, University of Tabriz, Emam Khomeini Bolv. 29 Bahman, Tabriz, 51666, Iran

    Hamed Baghban

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Correspondence to Ali Rostami .

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© 2011 Springer -Verlag Berlin Heidelberg

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Rostami, A., Rasooli, H., Baghban, H. (2011). Terahertz and Infrared Quantum Cascade Lasers. In: Terahertz Technology. Lecture Notes in Electrical Engineering, vol 77. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-15793-6_3

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  • DOI: https://doi.org/10.1007/978-3-642-15793-6_3

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