Infrared and terahertz integration detection based on optical antennas

So far, how to acquire an effective method of integration detection covering a relatively wide wavelength range has become a hot topic in the field of high performance radiation detection. In this work, the microstructure patterned Schottky-typed optical antenna is designed and then fabricated on Gallium Arsenide substrate and further used to sense near-infrared lights and terahertz signals, respectively. The wide frequency terahertz waves generated by InAs crystal are measured through patterned optical antenna device, and then the characteristics of transmitted waves are analyzed, it should be noted that the time delay characteristics of transmitted terahertz signals between 5ps and 8ps are different from microstructure patterned optical antenna. Under the conditions of using near-infrared lasers and also adjusting main parameters such as the exposure time, for example, 0.04ms、0.4ms、0.6ms、0.8ms、1.0ms and 1.5ms, in the experiments, the transmitted image characters acquired using functioned optical antennas with different electrode patterns, are analyzed. In the near-infrared transmission experiments, the transmitted bright light points or spots with relatively large distribution density and high intensity and very small structural size (~1μm), are discovered, which distribute over the top layer of electrode zone without metal structures of optical antenna device. The developed detection architecture based on Schottky-typed functioned optical antennas to sense infrared light and terahertz radiation, is expected to integrated sense electromagnetic signals in wide spectrum regime.

[1]  D. Cumming,et al.  A terahertz polarization insensitive dual band metamaterial absorber. , 2011, Optics letters.

[2]  Willie J Padilla,et al.  Active terahertz metamaterial devices , 2006, Nature.

[3]  Weili Zhang,et al.  Transmission properties of terahertz pulses through subwavelength double split-ring resonators. , 2006, Optics letters.

[4]  M. Kafesaki,et al.  Electric coupling to the magnetic resonance of split ring resonators , 2004 .

[5]  G. G. Stokes.  "J." , 1890, The New Yale Book of Quotations.

[6]  Carsten Rockstuhl,et al.  The impact of nearest neighbor interaction on the resonances in terahertz metamaterials , 2009 .

[7]  H. Atwater,et al.  Plasmonics for improved photovoltaic devices. , 2010, Nature materials.

[8]  J. Pendry,et al.  Magnetism from conductors and enhanced nonlinear phenomena , 1999 .

[9]  Willie J Padilla,et al.  Dynamical electric and magnetic metamaterial response at terahertz frequencies , 2006, 2006 Conference on Lasers and Electro-Optics and 2006 Quantum Electronics and Laser Science Conference.

[10]  Abul K. Azad,et al.  Experimental demonstration of frequency-agile terahertz metamaterials , 2008 .

[11]  Igal Brener,et al.  Thin-film sensing with planar terahertz metamaterials: sensitivity and limitations. , 2008, Optics express.

[12]  M. Kafesaki,et al.  Magnetic response of split-ring resonators in the far-infrared frequency regime. , 2005, Optics letters.

[13]  Carsten Rockstuhl,et al.  Spiral-type terahertz antennas and the manifestation of the Mushiake principle. , 2009, Optics express.

[14]  A. K. Azad,et al.  Terahertz metamaterial with asymmetric transmission , 2009, 0908.2524.

[15]  Weili Zhang,et al.  Effect of metal permittivity on resonant properties of terahertz metamaterials. , 2008, Optics letters.

[16]  Willie J Padilla,et al.  A metamaterial solid-state terahertz phase modulator , 2009 .

[17]  Jean-Jacques Greffet,et al.  Resonant optical antennas , 2013, The 8th European Conference on Antennas and Propagation (EuCAP 2014).