شماره ركورد كنفرانس :
3926
عنوان مقاله :
Proposal for THz generation by an Unbiased and antenna-coupled CW Terahertz Photomixer
پديدآورندگان :
Mohammad-Zamani .M. J m.mohammadzamani@modares.ac.ir Faculty of Electrical and Computer Engineering, Advanced Devices Simulation Lab (ADSL), Tarbiat Modares University, Tehran, Iran , Moravvej-Farshi .M. K Farshi_k@modares.ac.ir Faculty of Electrical and Computer Engineering, Advanced Devices Simulation Lab (ADSL), Tarbiat Modares University, Tehran, Iran , Neshat .M mneshat@ut.ac.ir School of Electrical and Computer Engineering, University of Tehran Tehran, Iran
كليدواژه :
Carrier transport , photomixer , terahertz , bias , free
عنوان كنفرانس :
بيست و چهارمين كنفرانس مهندسي برق ايران
چكيده فارسي :
We introduce an array of new antenna-coupled and unbiased terahertz photomixer. Unlike previous structures, this emitter does not require any external bias voltage. In this work, we show that an array of asymmetric (bi-metallic) MSM structures, whose unit cell (pitch) is made of a pair of dissimilar Schottky contacts on LTG-GaAs can act as bias free CW THz photomixer emitters. For photocarrier acceleration it rather makes use of the built-in electrostatic Schottky contact field formed at the electrode-photoconductor interface. Moreover, we demonstrate 5 µW of THz power radiation in the 0.5 THz can be achieved by using a dipole antenna integrated with the proposed unbiased photomixer. A hybrid numerical simulation method is used to model and analyze this phenomenon.
