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Analysis of dual band emission in SRR integrated terahertz photoconductive antenna

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Abstract

A novel approach for generating dual-band emission from terahertz (THz) photoconductive antenna (PCA) is reported for the first time, by employing Split Ring Resonator (SRR). The broad emission spectrum is split up into two narrowband emission peaks by incorporating a notch filter action of SRR. The PCA integrated with SRR is excited by a femto-second laser source to generate terahertz radiation. A single SRR ring is introduced in the front side of the PCA and two SRR rings are etched at the back side of the PCA substrate to produce dual emission peaks at 0.1 and 0.41 THz, which is considered as an optimum scheme. The directivity and the gain of the antenna at 0.1 THz are 5.89 dBi and 4.54 dB respectively and at 0.41 THz, it is observed to be 7.47 and 4.94 dBi. Integration of PCA with Split Ring Resonator (SRR) is a novel approach to achieve dual band emissions in terahertz PCA.

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The utilized data and materials are included within the manuscript.

Code availability

CST Microwave studio and MATLAB were used for simulation. The utilized codes are available on request, if needed.

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Authors and Affiliations

  1. Department of Electronics Engineering, MIT Campus, Anna University, Chennai, Tamil Nadu, 600044, India

    M. Shalini, Haritha Mohan, G. Jemima Nissiyah & M. Ganesh Madhan

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  1. M. Shalini
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  2. Haritha Mohan
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  3. G. Jemima Nissiyah
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  4. M. Ganesh Madhan
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Contributions

All the authors contributed to the study conception and design. Conceptualization and supervision of the research work was done by MGM. Writing and preparing the manuscript was done by SM, HM. Reviewing and verifying the manuscript was done by JN, MGM. The analysis of the results was done by all authors. All the authors read and approved the final manuscript.

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Correspondence to M. Shalini.

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Shalini, M., Mohan, H., Nissiyah, G.J. et al. Analysis of dual band emission in SRR integrated terahertz photoconductive antenna. Opt Quant Electron 55, 101 (2023). https://doi.org/10.1007/s11082-022-04309-z

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