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Proceedings Article

Dual-wavelength distributed feedback laser for the generation of terahertz radiation

[+] Author Affiliations
Antti Laakso, Mihail Dumitrescu, Markus Pessa

Tampere Univ. of Technology (Finland)

Proc. SPIE 7386, Photonics North 2009, 73862K (August 04, 2009); doi:10.1117/12.839628
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From Conference Volume 7386

  • Photonics North 2009
  • Réal Vallée
  • Quebec, Canada | May 24, 2009

abstract

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.

© (2009) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
Citation

Antti Laakso ; Mihail Dumitrescu and Markus Pessa
"Dual-wavelength distributed feedback laser for the generation of terahertz radiation", Proc. SPIE 7386, Photonics North 2009, 73862K (August 04, 2009); doi:10.1117/12.839628; http://dx.doi.org/10.1117/12.839628


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