Y-coupled Terahertz Quantum Cascade Lasers

descriptionPublicationkeyboard_double_arrow_right Article , Preprint , Conference object , Contribution for newspaper or weekly magazine 01 Jan 2012Embargo end date: 01 Jan 2012 United Kingdom Publisher:OSAJournal:Conference on Lasers and Electro-Optics 2012Funded by:UKRI | Aperiodic Lattices for Ph...

Authors: Chakraborty, Subhasish; Marshall, Owen P.; Khairuzzaman, Md; Beere, Harvey E.; Ritchie, David A.;

doi: 10.1364/cleo_si.2012.ctu2b.3 , 10.48550/arxiv.1206.0972

arXiv: 1206.0972

Y-coupled Terahertz Quantum Cascade Lasers

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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.

9 pages, 3 figures

Country

United Kingdom

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Keywords

Condensed Matter - Other Condensed Matter, FOS: Physical sciences, Physics - Optics, Optics (physics.optics), Other Condensed Matter (cond-mat.other)

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