New Frontiers in Terahertz Technology

By Mona Jarrahi

Electrical Engineering, UCLA, Los Angeles, CA

Published on

Abstract

Although unique potentials of terahertz waves for chemical identification, material characterization, biological sensing, and medical imaging have been recognized for quite a while, the relatively poor performance, higher costs, and bulky nature of current terahertz systems continue to impede their deployment in field settings. In this talk, I will describe some of our recent results on developing fundamentally new terahertz electronic/optoelectronic components and imaging/spectrometry architectures to mitigate performance limitations of existing terahertz systems. In specific, I will introduce new designs of high-performance photoconductive terahertz sources that utilize plasmonic antennas to offer terahertz radiation at record-high power levels of several milliwatts – demonstrating more than three orders of magnitude increase compared to the state of the art. I will also briefly highlight our research activities on development of new types of high-performance terahertz passive components (e.g., modulators, tunable filters, and beam deflectors) based on novel reconfigurable meta-films.

Bio

Mona Jarrahi Mona Jarrahi received Ph.D. degree in Electrical Engineering from Stanford University in 2007. She served as a Postdoctoral Scholar at University of California Berkeley from 2007 to 2008. After serving as an Assistant Professor at University of Michigan, she joined University of California Los Angeles in 2013 as an Associate Professor of Electrical Engineering and the Director of the Terahertz Electronics Laboratory. In recognition of her outstanding achievements, Prof. Jarrahi has received numerous prestigious awards in her career including the Presidential Early Career Award for Scientists and Engineers (PECASE); Early Career Award in Nanotechnology from the IEEE Nanotechnology Council; Outstanding Young Engineer Award from the IEEE Microwave Theory and Techniques Society. She has also been named a Kavli Fellow by the National Academy of Sciences. Prof. Jarrahi is a senior member of IEEE, OSA, and SPIE societies and serves as a member of the Terahertz Technology and Applications Committee of IEEE Microwave Theory and Techniques, an editorial board member of Journal of Infrared, Millimeter and Terahertz Waves, a Distinguished Lecturer of IEEE Microwave Theory and Techniques Society, and a Visiting Lecturer of SPIE.

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Cite this work

Researchers should cite this work as follows:

  • Mona Jarrahi (2015), "New Frontiers in Terahertz Technology," https://nanohub.org/resources/22228.

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Time

Location

Birck Technology Center, Room 2001, Purdue University, West Lafayette, IN

Tags

New Frontiers in Terahertz Technology
  • New Frontiers in Terahertz Technology 1. New Frontiers in Terahertz Tec… 0
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  • Outline 2. Outline 20.62062062062062
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  • Outline 3. Outline 80.547213880547218
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  • Significance of terahertz waves 4. Significance of terahertz wave… 80.91424758091425
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  • Significance of terahertz waves 5. Significance of terahertz wave… 171.338004671338
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  • Outline 6. Outline 438.40507173840507
    00:00/00:00
  • Physical limitations of existing terahertz sources 7. Physical limitations of existi… 439.6062729396063
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  • Physical limitations of existing terahertz sources 8. Physical limitations of existi… 793.66032699366031
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  • Outline 9. Outline 829.19586252919589
    00:00/00:00
  • Conventional photoconductive terahertz sources 10. Conventional photoconductive t… 831.43143143143152
    00:00/00:00
  • Plasmonic photoconductive terahertz sources 11. Plasmonic photoconductive tera… 1144.7447447447448
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  • Design of plasmonic contact electrode gratings 12. Design of plasmonic contact el… 1280.2469135802469
    00:00/00:00
  • First generation plasmonic source 13. First generation plasmonic sou… 1558.9923256589923
    00:00/00:00
  • First generation plasmonic source 14. First generation plasmonic sou… 1667.6009342676009
    00:00/00:00
  • Large area plasmonic photoconductive emitters 15. Large area plasmonic photocond… 1724.3910577243912
    00:00/00:00
  • Second generation plasmonic source 16. Second generation plasmonic so… 1960.3937270603938
    00:00/00:00
  • Second generation plasmonic source 17. Second generation plasmonic so… 1989.2892892892894
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  • Design of 3D plasmonic gratings 18. Design of 3D plasmonic grating… 2031.0977644310979
    00:00/00:00
  • Fabrication of 3D plasmonic gratings 19. Fabrication of 3D plasmonic gr… 2078.411745078412
    00:00/00:00
  • Characterization of 3D plasmonic gratings 20. Characterization of 3D plasmon… 2108.9756423089757
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  • Second generation plasmonic source 21. Second generation plasmonic so… 2166.666666666667
    00:00/00:00
  • Multiple guided modes supported by subwavelength gratings 22. Multiple guided modes supporte… 2373.3066399733066
    00:00/00:00
  • Optical-pump terahertz-probe spectroscopy 23. Optical-pump terahertz-probe s… 2421.0210210210212
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  • Terahertz detection sensitivity enhancement by utilizing plasmonic contact electrodes 24. Terahertz detection sensitivit… 2451.6516516516517
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  • Demonstration of terahertz detection responsivity enhancement 25. Demonstration of terahertz det… 2511.3780447113782
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  • Noise analysis of plasmonic and conventional photoconductive terahertz detectors 26. Noise analysis of plasmonic an… 2547.1805138471805
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  • First generation plasmonic photomixers 27. First generation plasmonic pho… 2626.9936603269939
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  • First generation plasmonic photomixers 28. First generation plasmonic pho… 2668.3016349683016
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  • First generation plasmonic photomixers 29. First generation plasmonic pho… 2674.9082415749085
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  • Tradeoff between radiation power and linewidth 30. Tradeoff between radiation pow… 2734.734734734735
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  • Pushing toward higher radiation powers 31. Pushing toward higher radiatio… 2736.036036036036
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  • Outline 32. Outline 2860.5605605605606
    00:00/00:00
  • Physical limitations of existing terahertz modulators 33. Physical limitations of existi… 2889.7564230897565
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  • Reconfigurable mesh filters for terahertz modulation 34. Reconfigurable mesh filters fo… 2921.6883550216885
    00:00/00:00
  • First generation reconfigurable mesh filters for terahertz modulation 35. First generation reconfigurabl… 2956.222889556223
    00:00/00:00
  • First generation reconfigurable mesh filters for terahertz modulation 36. First generation reconfigurabl… 2994.7947947947951
    00:00/00:00
  • Electromagnetic interaction with the designed reconfigurable mesh filter 37. Electromagnetic interaction wi… 3020.8875542208875
    00:00/00:00
  • Fabrication process 38. Fabrication process 3026.8268268268271
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  • Measurement setup for characterizing terahertz modulator prototypes 39. Measurement setup for characte… 3032.5325325325325
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  • Performance of terahertz modulator prototypes 40. Performance of terahertz modul… 3035.7023690357023
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  • Characterization of terahertz modulator prototypes 41. Characterization of terahertz … 3091.5915915915916
    00:00/00:00
  • Summary 42. Summary 3128.3283283283286
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  • Acknowledgements 43. Acknowledgements 3183.8171504838174
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