Continuous terahertz-wave generation using a monolithically integrated horn antenna

A transverse electromagnetic horn antenna is monolithically integrated with a standard ultrafast interdigitated electrode photodetector on low-temperature-grown GaAs. Continuous-wave terahertz radiation is generated at frequencies up to 2 THz with a maximum power of approximately 1 μW at 780 GHz. Experimental variations in the terahertz power as function of the frequency are explained by means of electromagnetic simulations of the antenna and the photomixer vicinity.

[1]  Didier Lippens,et al.  Far-infrared cw difference-frequency generation using vertically integrated and planar low temperature grown GaAs photomixers: application to H2S rotational spectrum up to 3 THz , 2004 .

[2]  Didier Lippens,et al.  Terahertz frequency difference from vertically integrated low-temperature-grown GaAs photodetector , 2002 .

[3]  R. Mendis,et al.  Spectral characterization of broadband THz antennas by photoconductive mixing: toward optimal antenna design , 2005, IEEE Antennas and Wireless Propagation Letters.

[4]  Hermann Schumacher,et al.  Transit-time limited frequency response of InGaAs MSM photodetectors , 1990 .

[5]  C. L. Dennis,et al.  Photomixing up to 3.8 THz in low‐temperature‐grown GaAs , 1995 .

[6]  Hiroshi Ito,et al.  Photonic terahertz-wave generation using antenna-integrated uni-travelling-carrier photodiode , 2003 .

[7]  G.S. Smith,et al.  On the Characteristic impedance of the TEM horn antenna , 2004, IEEE Transactions on Antennas and Propagation.

[8]  D. Grischkowsky,et al.  Demonstrated low radiative loss of a quadrupole ultrashort electrical pulse propagated on a three strip coplanar transmission line , 1997 .

[9]  Tahsin Akalin,et al.  Integrated terahertz TEM horn antenna , 2007 .

[10]  J. P. Mattia,et al.  Milliwatt output levels and superquadratic bias dependence in a low‐temperature‐grown GaAs photomixer , 1994 .

[11]  Shuji Matsuura,et al.  A traveling-wave THz photomixer based on angle-tuned phase matching , 1999 .

[12]  P. Jepsen,et al.  Radiation patterns from lens-coupled terahertz antennas. , 1995, Optics letters.

[13]  R. Schieder,et al.  Large-area traveling-wave photonic mixers for increased continuous terahertz power , 2005 .