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arXiv · 1206.0972

Y coupled terahertz quantum cascade lasers

Owen P. Marshall·Subhasish Chakraborty·Md. Khairuzzaman·Harvey E. Beere·David A. Ritchie
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Abstract

Here we demonstrate a Y coupled terahertz (THz) quantum cascade laser (QCL) system. The two THz QCLs working around 2.85 THz are driven by independent electrical pulsers. Total peak THz output power of the Y system, with both arms being driven synchronously, is found to be more than the linear sum of the peak powers from the individual arms; 10.4 mW compared with 9.6 mW (4.7 mW + 4.9 mW). Furthermore, we demonstrate that the emission spectra of this coupled system are significantly different to that of either arm alone, or to the linear combination of their individual spectra.

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Owen P. Marshall, Subhasish Chakraborty, Md. Khairuzzaman, Harvey E. Beere, David A. Ritchie. 2012-06-05. Y coupled terahertz quantum cascade lasers. https://arxiv.org/abs/1206.0972

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