Article

Traveling-wave Uni-Traveling Carrier photodiodes for continuous wave THz generation.

UCL Electronic and Electrical Engineering, Torrington Place, London WC1E 7JE, UK.
Optics Express (Impact Factor: 3.53). 05/2010; 18(11):11105-10. DOI: 10.1364/OE.18.011105
Source: PubMed

ABSTRACT The design, experimental evaluation and performance of a Traveling-Wave Uni-Traveling Carrier photodiode for Terahertz generation are described and its advantages in terms of frequency response are demonstrated. The device delivered 148 microW at 457 GHz, 24 microW at 914 GHz when integrated with resonant antennas and 105 microW at 255 GHz, 30 microW at 408 GHz, 16 microW at 510 GHz and 10 microW at 612 GHz. Record levels of Terahertz figure of merit (PTHz/Popt2 in W(-1)) were achieved ranging from 1 W(-1) at 110 GHz to 0.0024 W(-1) at 914 GHz.

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