|
|
|
|
|
|
|
|
|
Department of Electrical and Computer Engineering
University of Utah
50 S. Central Campus Drive, Room 3280
Salt Lake City, UT 84112-9206
Email: nahata@ece.utah.edu
Phone: 801-581-5184
Fax: 801-581-5281
Background:
Ph.D. Columbia University
M.S. Columbia University
B.S. MIT
Research Interests:
Terahertz optoelectronics, ultrafast optics, nonlinear optics, nanophotonics, guided wave devices, imaging, plasmonics, metamaterials
|
|
|
|
|
|
|
|
|
Publications
|
|
|
[51] A. Agrawal, T. Matsui, Z. V. Vardeny, and A. Nahata, "Extraordinary optical transmission through metallic films perforated with aperture arrays having short-range order,"
Opt. Express 16, 6267-6273 (2008).
[50] W. Zhu, A. Agrawal, and A. Nahata, "Planar plasmonic terahertz guided-wave devices,"
Opt. Express 16, 6216-6226 (2008).
[49] Z.V. Vardeny and A. Nahata, “Anderson localization of slow light,”
Nature Photonics 2, 75-76 (2008).
[48] M. Diwekar, T. Matsui, A. Agrawal, A. Nahata, and Z.V. Vardeny, “Mid-infrared optical response and thermal emission from metallic films perforated with subwavelength hole arrays,”
Phys. Rev. B 76, 195402 (2007).
[47] A. Agrawal, T. Matsui, Z. V. Vardeny, and A. Nahata, “Terahertz transmission properties of quasiperiodic and aperiodic aperture arrays,”
J. Opt. Soc. Am. B 24, 2545-2555 (2007).
[46] W. Zhu, A. Agrawal, and A. Nahata, “Direct measurement of the Gouy phase shift for surface plasmon-polaritons,”
Opt. Express 15, 9995-10001 (2007).
[45] A. Agrawal and A. Nahata, “Coupling terahertz radiation onto a metal wire using a subwavelength coaxial aperture,”
Opt. Express 15, 9022-9028 (2007).
[44] W. Zhu and A. Nahata, “Electric field vector characterization of terahertz surface plasmons,”
Opt. Express 15, 5616-5624 (2007).
[43] T. Matsui, A. Agrawal, A. Nahata, and Z.V. Vardeny, “Transmission resonances through quasicrystal arrays of subwavelength apertures,”
Nature (London) 446, 517-520 (2007).
[42] T. Matsui, A. Agrawal, A. Nahata, and R. Menon, and Z.V. Vardeny, “Terahertz time-domain spectroscopy studies of periodic and quasiperiodic hole arrays in metallic films,”
Physica B 394, 363-367 (2007).
[41] A. Agrawal and A. Nahata, “Time-domain radiative properties of a single subwavelength aperture surrounded by annular grooves,”
Opt. Express 14, 1973-1981 (2006).
[40] T. Matsui, Z.V. Vardeny, A. Agrawal, A. Nahata, and R. Menon, “Resonantly enhanced transmission through a periodic array of subwavelength apertures in heavily doped conducting polymer films,”
Appl. Phys. Lett. 88, 071101/1-3 (2006).
[39] H. Cao and A. Nahata, “Coherent detection of pulsed narrowband terahertz radiation,”
Appl. Phys. Lett. 88, 011101/1-3 (2005).
[38] X. Shou, A. Agrawal, and A. Nahata, “Role of metal film thickness on the enhanced transmission properties of a periodic array of subwavelength apertures,”
Opt. Express 13, 9834-9840 (2005).
[37] A. Agrawal, H. Cao, and A. Nahata, “Excitation and scattering of surface plasmon-polaritons on structured metal films and their application to pulse shaping and enhanced transmission,”
New J. Phys. 7, 249 (2005).
[36] H. Cao and A. Nahata, "Coupling of terahertz pulses onto a single metal wire waveguide using milled grooves,"
Opt. Express 13, 7028-7034 (2005).
[35] T. Matsui, Z.V. Vardeny, A. Agrawal, A. Nahata, and R. Menon, “Anomalous transmission through highly-doped conducting polymer PPy (PF6) films with two-dimensional periodic subwavelength hole array,”
Journal of the Society of Electrical Materials Engineering 14, 7-10 (2005).
[34] A. Agrawal, H. Cao, and A. Nahata, “Time-domain analysis of enhanced transmission through a single subwavelength aperture,”
Opt. Express 13, 3535-3542 (2005).
[33] H. Cao, A. Agrawal, and A. Nahata, "Controlling the transmission resonance lineshape of a single subwavelength aperture,"
Opt. Express 13, 763-769 (2005).
[32] H. Cao and A. Nahata, “Influence of aperture shape on the transmission properties of a periodic array of subwavelength apertures,”
Opt. Express 12, 3664-3672 (2004).
S. Blair and A. Nahata, “Introduction,”
Opt. Express 12, 3618 (2004).
[31] H. Cao and A. Nahata, “Resonantly enhanced transmission of terahertz radiation through a periodic array of subwavelength apertures,”
Opt. Express 12, 1004-1010 (2004).
[30] H. Cao, R.A. Linke, and A. Nahata, “Broadband generation of broadband terahertz radiation in a waveguide,”
Opt. Lett. 29, 1751-1753 (2004).
[29] A. Nahata, R.A. Linke, T. Ishi, and K. Ohashi, “Enhanced nonlinear optical conversion using periodically nanostructured metal films,”
Opt. Lett. 28, 423-425 (2003).
[28] A. Nahata, “Generation and coherent detection of far-infrared and mid-infrared radiation,”
IEEE Circuits and Devices Magazine, (Feature Article) 32-39, May 2002.
INVITED
[27] J. Shan, A. Nahata, and T.F. Heinz, “Time-domain spectroscopy using nonlinear optical approaches,”
J. Nonlinear Opt. Phys. Mater. 11, 31-48, (2002).
INVITED
[26] H. Cao and A. Nahata, “Electro-optic detection of continuous-wave mid-infrared radiation,”
Opt. Lett. 27, 1779-1781 (2002).
[25] A. Dogariu, A. Nahata, R.A. Linke, L.J. Wang, and R. Trebino, “Optical pulse propagation through metallic nano-apertures,”
Appl. Phys. B 74, s69-s74 (2002).
[24] A. Nahata, J.T. Yardley and T.F. Heinz, “Two-dimensional imaging of continuous-wave terahertz radiation,”
Appl. Phys. Lett. 81, 963-965 (2002).
[23] H. Cao, T.F. Heinz, and A. Nahata, “Electro-optic detection of femtosecond electromagnetic pulses using poled polymers,”
Opt. Lett. 27, 775-777 (2002).
[22] T. Thio, H.J. Lezec, T.W. Ebbesen, K.M. Pellerin, G.D. Lewen, A. Nahata, R.A. Linke, “Giant optical transmission of sub-wavelength apertures: physics and applications,”
Nanotechnology 13, 429-432 (2002).
[21] A. Nahata, “Nonlinear optical generation and detection of ultrashort electrical pulses in transmission lines,”
Opt. Lett. 26, 385-387 (2001).
[20] A. Nahata, C.J. DiCaprio, H. Yamada, A.I. Ryskin, A.S. Shcheulin, and R.A. Linke, “Widely Tunable Distributed Bragg Reflector Laser Using a Dynamic Holographic Grating Mirror,”
IEEE Photon. Technol. Lett. 12, 1525-1527 (2000).
[19] J. Shan, A.S. Weling, E. Knoesel, L. Bartels, M. Bonn, A. Nahata, G.A. Reider, and T.F. Heinz, T.F., “Single-shot measurement of terahertz electromagnetic pulses by use of electro-optic sampling,”
Opt. Lett. 25, 426-428 (2000).
[18] A. Nahata, J.T. Yardley and T.F. Heinz, “Free-space electro-optic detection of continuous-wave terahertz radiation,”
Appl. Phys. Lett. 75, 2524-2526 (1999).
[17] J.I. Dadap, J. Shan, A.S. Weling; J.A. Misewich, A. Nahata, and T.F. Heinz, “Measurement of the vector character of electric fields by optical second-harmonic generation,”
Opt. Lett. 24, 1059-1061 (1999).
[16] A. Nahata and T.F. Heinz, “Generation of subpicosecond electrical pulses using optical rectification,”
Opt. Lett. 23, 867-869 (1998).
[15] A. Nahata and T.F. Heinz, “Detection of freely propagating terahertz radiation by use of optical second-harmonic generation,”
Opt. Lett. 23, 67-69 (1998).
[14] A. Nahata and T.F. Heinz, “Reshaping of freely propagating terahertz pulses by diffraction,”
IEEE J. Sel. Topics Quant. Electron. 2, 701-708 (1996).
[13] A. Nahata, A.S. Weling, and T.F. Heinz, “A wideband coherent terahertz spectroscopy system using optical rectification and electro-optic sampling,”
Appl. Phys. Lett. 69, 2321-23 (1996).
[12] A. Nahata, T.F. Heinz, and J.A. Misewich, “High speed electrical sampling using optical second harmonic generation,”
Appl. Phys. Lett. 69, 746-748 (1996).
[11] A. Nahata, D.H. Auston, T.F. Heinz, and C. Wu, “Coherent detection of freely propagating terahertz radiation by electro-optic sampling,”
Appl. Phys. Lett. 68, 150-152 (1996).
[10] A. Nahata, D.H. Auston, C. Wu, and J.T. Yardley, “Generation of terahertz radiation from a poled polymer,”
Appl. Phys. Lett. 67, 1358-1360 (1995).
[9] F. Kajzar, K. Horn, A. Nahata, and J.T. Yardley, “Nonlinear optical properties of an organic single crystal: relation between macroscopic and microscopic hyperpolarisabilities,”
Nonlinear Optics 8, 205-217 (1994).
[8] A. Nahata, C. Wu, C. Knapp, V. Lu, J. Shan, and J.T. Yardley, “Thermally stable polyester polymers for second-order nonlinear optics,”
Appl. Phys. Lett. 64, 3371-3373 (1994).
[7] A. Nahata, C. Wu, and J.T. Yardley, “Electro-optic determination of the nonlinear-optical properties of a covalently functionalized Disperse Red #1 copolymer,”
J. Opt. Soc. Am. B 10, 1553-1564 (1993).
[6] P.M. Ferm, C.W. Knapp, A. Nahata, C. Wu, J.T. Yardley, B.B. Hu, X.-C. Zhang, and D.H. Auston, “Frequency response of electrooptic polymers,”
Nonlinear Optics 5, 361-370 (1993).
[5] A. Nahata, C. Wu, and J.T. Yardley, "Electro-optic characterization of organic media,"
IEEE Trans. Instrum. Meas. Tech. 41, 128-131 (1992).
[4] K.W. Beeson, P.M. Ferm, A. Nahata, C. Wu, J. Shan, and J.T. Yardley, “Wavelength dependence of absorption loss and electro-optic response in optical polymer films,”
Mol. Cryst. Liq. Cryst. Sci. Technol. - Sec. B 3, 205-213 (1992).
[3] K.A. Horn and A. Nahata, “Structure of 2,6-dibromo-N-methyl-4-nitroaniline,”
Acta Crystallographica: Section C - Crystal Structure Communications 47, 1283-1287 (1991).
[2] A. Nahata, K.A. Horn, and J.T. Yardley, “A new organic electro-optic crystal: 2,6-dibromo-N-methyl-4-nitroaniline,”
IEEE J. Quant. Electron. 26, 1521-1526 (1990).
[1] V.H. Houlding, A. Nahata, J.T. Yardley, and R.L. Elsenbaumer, “Optical third harmonic response of amorphous poly(3-methyl-4'-octyl-2,2'-bithiophene-5,5'-diyl) thin films,”
Chemistry of Materials 2, 169-172 (1990).
