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Wu QY, Tanoto H, Ding L, et al. Branchlike nano-electrodes for enhanced terahertz emission in photomixers. Nanotechnology. 2015;26(25):255201doi: 10.1088/0957-4484/26/25/255201.
Wu, Q. Y., Tanoto, H., Ding, L., Choy Chum, C., Wang, B., Bian Chew, A., Banas, A., Banas, K., Jin Chua, S., & Teng, J. (2015). Branchlike nano-electrodes for enhanced terahertz emission in photomixers. Nanotechnology, 26(25), 255201. https://doi.org/10.1088/0957-4484/26/25/255201
Wu, Qing Yang Steve, et al. "Branchlike nano-electrodes for enhanced terahertz emission in photomixers." Nanotechnology vol. 26,25 (2015): 255201. doi: https://doi.org/10.1088/0957-4484/26/25/255201
Wu QY, Tanoto H, Ding L, Choy Chum C, Wang B, Bian Chew A, Banas A, Banas K, Jin Chua S, Teng J. Branchlike nano-electrodes for enhanced terahertz emission in photomixers. Nanotechnology. 2015 Jan 26;26(25):255201. doi: 10.1088/0957-4484/26/25/255201. Epub 2015 Jun 04. PMID: 26041560.
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Nanotechnology. 2015 Jan 26;26(25):255201. doi: 10.1088/0957-4484/26/25/255201. Epub 2015 Jun 04.

Branchlike nano-electrodes for enhanced terahertz emission in photomixers.

Nanotechnology

Qing Yang Steve Wu, Hendrix Tanoto, Lu Ding, Chan Choy Chum, Bing Wang, Ah Bian Chew, Agnieszka Banas, Krzysztof Banas, Soo Jin Chua, Jinghua Teng

Affiliations

  1. Institute of Materials Research and Engineering, Agency for Science, Technology and Research (A*STAR), Singapore 117602, Singapore.

PMID: 26041560 DOI: 10.1088/0957-4484/26/25/255201

Abstract

Branchlike nano-electrode structures were found to improve the THz emission intensity of a photomixer by approximately one order of magnitude higher than that of a photomixer with one row of nano-electrodes separated by the same 100 nm gap. The enhancement is attributed to a more efficient collection of generated carriers, which is in turn due to a more intense electric field under the branchlike nano-electrodes' structures. This is coupled with an increased number of effective areas where strong tip-to-tip THz field enhancements were observed. The optical-to-THz conversion efficiency of the photomixers with the new branchlike nano-electrodes was found to be 10 times higher. The more efficient THz photomixer will greatly benefit the development of continuous-wave THz imaging and spectroscopy systems.

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