4 August 2009 Dual-wavelength distributed feedback laser for the generation of terahertz radiation
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Proceedings Volume 7386, Photonics North 2009; 73862K (2009) https://doi.org/10.1117/12.839628
Event: Photonics North 2009, 2009, Quebec, Canada
The use of terahertz radiation bears great potential for various applications. We propose a method for obtaining terahertz radiation based on frequency difference generation from two-longitudinal-mode emission of monolithic distributed feedback lasers with modulated gratings. The frequency separation of the two dominating longitudinal modes of the proposed device structure can cover a wide range and several structural and operation point parameters can be used for coarse- and fine-tuning. Moreover, the nearly perfect overlapping of the dominant modes' optical field transverse distributions is enabling high-efficiency terahertz generation. The paper presents design formulas, simulation results and discusses the influences of the fabrication inaccuracies on the target frequency separation.
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Antti Laakso, Antti Laakso, Mihail Dumitrescu, Mihail Dumitrescu, Markus Pessa, Markus Pessa, } "Dual-wavelength distributed feedback laser for the generation of terahertz radiation", Proc. SPIE 7386, Photonics North 2009, 73862K (4 August 2009); doi: 10.1117/12.839628; https://doi.org/10.1117/12.839628

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