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Reduction of effective terahertz focal spot size by means of nested concentric parabolic reflectors
1.Martin C Nuss and Joseph Orenstein, “Terahertz time-domain spectroscopy,” Millimeter and submillimeter wave spectroscopy of solids (Springer, 1998), pp. 7–50.
2.Min Ki Choi, Alan Bettermann, and DW Van Der Weide, “Potential for detection of explosive and biological hazards with electronic terahertz systems,” Philosophical Transactions of the Royal Society of London A: Mathematical, Physical and Engineering Sciences 362(1815), 337–349 (2004).
4.Michael Nagel, Peter Haring Bolivar, Martin Brucherseifer, Heinrich Kurz, Anja Bosserhoff, and Reinhard Büttner, “Integrated planar terahertz resonators for femtomolar sensitivity label-free detection of dna hybridization,” Applied optics 41(10), 2074–2078 (2002).
6.Jon L Johnson, Timothy D Dorney, and Daniel M Mittleman, “Enhanced depth resolution in terahertz imaging using phase-shift interferometry,” Applied Physics Letters 78(6), 835–837 (2001).
10.Philip F Taday, “Applications of terahertz spectroscopy to pharmaceutical sciences,” Philosophical Transactions of the Royal Society of London A: Mathematical, Physical and Engineering Sciences 362(1815), 351–364 (2004).
11.Robert A Kaindl, Marc A Carnahan, D Hägele, R Lövenich, and Daniel S Chemla, “Ultrafast terahertz probes of transient conducting and insulating phases in an electron–hole gas,” Nature 423(6941), 734–738 (2003).
12.James N Heyman, Roland Kersting, and Karl Unterrainer, “Time-domain measurement of intersubband oscillations in a quantum well,” Applied physics letters 72(6), 644–646 (1998).
13.R Valdés Aguilar, AV Stier, W Liu, LS Bilbro, DK George, N Bansal, L Wu, J Cerne, AG Markelz, S Oh et al., “Terahertz response and colossal kerr rotation from the surface states of the topological insulator Bi2Se3,” Physical review letters 108(8), 087403 (2012).
14.John Corson, R Mallozzi, J Orenstein, JN Eckstein, and I Bozovic, “Vanishing of phase coherence in underdoped Bi2Sr2CaCu2O8+δ,” Nature 398(6724), 221–223 (1999).
15.LS Bilbro, R Valdés Aguilar, G Logvenov, O Pelleg, I Boović, and NP Armitage, “Temporal correlations of superconductivity above the transition temperature in La2−xSrxCuO4 probed by terahertz spectroscopy,” Nature Physics 7(4), 298–302 (2011).
16.LiDong Pan, Se Kwon Kim, A Ghosh, Christopher M Morris, Kate A Ross, Edwin Kermarrec, Bruce D Gaulin, SM Koohpayeh, Oleg Tchernyshyov, and NP Armitage, “Low-energy electrodynamics of novel spin excitations in the quantum spin ice Y b2Ti2O7,” Nature communications 5 (2014).
17.CM Morris, R Valdés Aguilar, A Ghosh, SM Koohpayeh, J Krizan, RJ Cava, O Tchernyshyov, TM McQueen, and NP Armitage, “Hierarchy of bound states in the one-dimensional ferromagnetic ising chain CoNb2O6 investigated by high-resolution time-domain terahertz spectroscopy,” Physical review letters 112(13), 137403 (2014).
18.NJ Laurita, J Deisenhofer, LiDong Pan, CM Morris, M Schmidt, M Johnsson, V Tsurkan, A Loidl, and NP Armitage, “Singlet-triplet excitations and long-range entanglement in the spin-orbital liquid candidate fesc 2 s 4,” Physical Review Letters 114(20), 207201 (2015).
, LiDong Pan
, Yize S Li
, LH Greene
, J Eckstein
, and NP Armitage
, “Anomalous frequency and temperature dependent scattering and hund’s coupling in the almost quantum critical heavy fermion system CeFe2Ge2
,” arXiv preprint arXiv:1405.4007
20.Christiaan Richter and Charles A Schmuttenmaer, “Exciton-like trap states limit electron mobility in tio2 nanotubes,” Nature Nanotechnology 5(11), 769–772 (2010).
21.R Valdés Aguilar, L Wu, AV Stier, LS Bilbro, M Brahlek, N Bansal, S Oh, and NP Armitage, “Aging and reduced bulk conductance in thin films of the topological insulator Bi2Se3,” Journal of Applied Physics 113(15), 153702 (2013).
22.Liang Wu, M Brahlek, R Valdés Aguilar, AV Stier, CM Morris, Y Lubashevsky, LS Bilbro, N Bansal, S Oh, and NP Armitage, “A sudden collapse in the transport lifetime across the topological phase transition in (Bi1−xInx)2Se3,” Nature Physics 9(7), 410–414 (2013).
23.Jason N Hancock, Jacobus Lodevicus Martinu van Mechelen, Alexey B Kuzmenko, Dirk Van Der Marel, Christoph Brüne, Elena G Novik, Georgy V Astakhov, Hartmut Buhmann, and Laurens W Molenkamp, “Surface state charge dynamics of a high-mobility three-dimensional topological insulator,” Physical review letters 107(13), 136803 (2011).
24.Claudia Brückner, Gunther Notni, and Andreas Tünnermann, “Optimal arrangement of 90° off-axis parabolic mirrors in THz setups,” Optik-International Journal for Light and Electron Optics 121(1), 113–119 (2010).
25.MM Awad and RA Cheville, “Transmission terahertz waveguide-based imaging below the diffraction limit,” Applied Physics Letters 86(22), 221107 (2005).
26.Masaaki Sato, Takuya Higuchi, Natsuki Kanda, Kuniaki Konishi, Kosuke Yoshioka, Takayuki Suzuki, Kazuhiko Misawa, and Makoto Kuwata-Gonokami, “Terahertz polarization pulse shaping with arbitrary field control,” Nature Photonics 7(9), 724–731 (2013).
27.Gordon M Turner, Matthew C Beard, and Charles A Schmuttenmaer, “Carrier localization and cooling in dye-sensitized nanocrystalline titanium dioxide,” The Journal of Physical Chemistry B 106(45), 11716–11719 (2002).
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An ongoing limitation of terahertz spectroscopy is that the technique is generally limited to the study of relatively large samples of order 4 mm across due to the generally large size of the focal beam spot. We present a nested concentric parabolic reflector design which can reduce the terahertz focal spot size. This parabolic reflector design takes advantage of the feature that reflected rays experience a relative time delay which is the same for all paths. The increase in effective optical path for reflected light is equivalent to the aperture diameter itself. We have shown that the light throughput of an aperture of 2 mm can be increased by a factor 15 as compared to a regular aperture of the same size at low frequencies. This technique can potentially be used to reduce the focal spot size in terahertz spectroscopy and enable the study of smaller samples.
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