Over 100-THz bandwidth selective difference frequency generation at LaAlO<sub>3</sub>/SrTiO<sub>3</sub> nanojunctions

Lu Chen; Erin Sutton; Hyungwoo Lee; Jung-Woo Lee; Jianan Li; Chang-Beom Eom; Patrick Irvin; Jeremy Levy

doi:10.1038/s41377-019-0135-0

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Over 100-THz bandwidth selective difference frequency generation at LaAlO₃/SrTiO₃ nanojunctions

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- Over 100-THz bandwidth selective difference frequency generation at LaAlO₃/SrTiO₃ nanojunctions
- Over 100-THz bandwidth selective difference frequency generation at LaAlO₃/SrTiO₃ nanojunctions
- LSA 2019年8卷第2期页码：261-267
- Affiliations：
  
  1.Department of Physics and Astronomy, University of Pittsburgh, Pittsburgh, PA, 15260, USA
  2.Pittsburgh Quantum Institute, Pittsburgh, PA, 15260, USA
  3.Department of Materials Science and Engineering, University of Wisconsin-Madison, Madison, WA, 53706, USA
- Author bio：
  
  Jeremy Levy (jlevy@pitt.edu)
- Funds：
- DOI：10.1038/s41377-019-0135-0
  中图分类号：
- 纸质出版日期：2019，
  
  网络出版日期：2019-02-27，
  
  收稿日期：2018-10-26，
  
  修回日期：2019-02-01，
  
  录用日期：2019-02-02
- Accepted：
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Over 100-THz bandwidth selective difference frequency generation at LaAlO₃/SrTiO₃ nanojunctions[J]. LSA, 2019,8(2):261-267.

Chen, L. et al. Over 100-THz bandwidth selective difference frequency generation at LaAlO₃/SrTiO₃ nanojunctions. Light: Science & Applications, 8, 261-267 (2019).
Over 100-THz bandwidth selective difference frequency generation at LaAlO₃/SrTiO₃ nanojunctions[J]. LSA, 2019,8(2):261-267. DOI： 10.1038/s41377-019-0135-0.

Chen, L. et al. Over 100-THz bandwidth selective difference frequency generation at LaAlO₃/SrTiO₃ nanojunctions. Light: Science & Applications, 8, 261-267 (2019). DOI： 10.1038/s41377-019-0135-0.

摘要

Abstract

The ability to combine continuously tunable narrow-band terahertz (THz) generation that can access both the far-infrared and mid-infrared regimes with nanometer-scale spatial resolution is highly promising for identifying underlying light-matter interactions and realizing selective control of rotational or vibrational resonances in nanoparticles or molecules. Here

we report selective difference frequency generation with over 100 THz

bandwidth via femtosecond optical pulse shaping. The THz emission is generated at nanoscale junctions at the interface of LaAlO

/SrTiO

(LAO/STO) that is defined by conductive atomic force microscope lithography

with the potential to perform THz spectroscopy on individual nanoparticles or molecules. Numerical simulation of the time-domain signal facilitates the identification of components that contribute to the THz generation. This ultra-wide-bandwidth tunable nanoscale coherent THz source transforms the LAO/STO interface into a promising platform for integrated lab-on-chip optoelectronic devices with various functionalities.

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references

Kaindl, R. A. et al. Ultrafast terahertz probes of transient conducting and insulating phases in an electron-hole gas.Nature423, 734-738 (2003)..

Rini, M. et al. Control of the electronic phase of a manganite by mode-selective vibrational excitation.Nature449, 72-74 (2007)..

Han, P. Y.&Zhang, X. C. Free-space coherent broadband terahertz time-domain spectroscopy.Meas. Sci. Technol.12, 1747-1756 (2001)..

Tonouchi, M. Cutting-edge terahertz technology.Nat. Photonics1, 97-105 (2007)..

Kleine-Ostmann, T.&Nagatsuma, T. A review on terahertz communications research.J. Infrared, Millim., Terahertz Waves32, 143-171 (2011)..

Feurer, T., Vaughan, J. C.&Nelson, K. A. Spatiotemporal coherent control of lattice vibrational waves.Science299, 374-377 (2003)..

Hunsche, S. et al. THz near-field imaging.Opt. Commun.150, 22-26 (1998)..

Bitzer, A., Ortner, A.&Walther, M. Terahertz near-field microscopy with subwavelength spatial resolution based on photoconductive antennas.Appl. Opt.49, E1-E6 (2010)..

Eisele, M. et al. Ultrafast multi-terahertz nano-spectroscopy with sub-cycle temporal resolution.Nat. Photonics8, 841-845 (2014)..

Cocker, T. L. et al. An ultrafast terahertz scanning tunnelling microscope.Nat. Photonics7, 620-625 (2013)..

Ma, Y. J. et al. Broadband terahertz generation and detection at 10 nm scale.Nano. Lett.13, 2884-2888 (2013)..

Cen, C. et al. Nanoscale control of an interfacial metal-insulator transition at room temperature.Nat. Mater.7, 298-302 (2008)..

Jnawali, G. et al. Photoconductive response of a single Au nanorod coupled to LaAlO3/SrTiO3nanowires.Appl. Phys. Lett.106, 211101 (2015)..

Thiel, S. et al. Tunable quasi-two-dimensional electron gases in oxide heterostructures.Science313, 1942-1945 (2006)..

Bi, F. et al. "Water-cycle" mechanism for writing and erasing nanostructures at the LaAlO3/SrTiO3interface.Appl. Phys. Lett.97, 173110 (2010)..

Brown, K. A. et al. Giant conductivity switching of LaAlO3/SrTiO3heterointerfaces governed by surface protonation.Nat. Commun.7, 10681(2016)..

Irvin, P. et al. Rewritable nanoscale oxide photodetector.Nat. Photonics4, 849-852 (2010)..

Feng, T. Anomalous photoelectronic processes in SrTiO3.Phys. Rev. B25, 627-642 (1982)..

Kanemitsu, Y.&Yamada, Y. Light emission from SrTiO3.Phys. Status Solidi (b)248, 416-421 (2011)..

Yamakata, A., Vequizo, J. J. M.&Kawaguchi, M. Behavior and energy state of photogenerated charge carriers in single-crystalline and polycrystalline powder SrTiO3studied by time-resolved absorption spectroscopy in the visible to mid-infrared region.J. Phys. Chem. C.119, 1880-1885 (2015)..

Günter, T. et al. Spatial inhomogeneities at the LaAlO3/SrTiO3interface: evidence from second harmonic generation.Phys. Rev. B86, 235418 (2012)..

Rubano, A. et al. Electronic states at polar/nonpolar interfaces grown on SrTiO3studied by optical second harmonic generation.Phys. Rev. B88, 245434 (2013)..

Nakamura, R.&Kanematsu, Y. Femtosecond spectral snapshots based on electronic optical Kerr effect.Rev. Sci. Instrum.75, 636-644 (2004)..

Casalbuoni, S. et al. Ultrabroadband terahertz source and beamline based on coherent transition radiation.Phys. Rev. Spec. Top. - Accel. Beams12, 030705 (2009)..

Huber, R. et al. Generation and field-resolved detection of femtosecond electromagnetic pulses tunable up to 41 THz.Appl. Phys. Lett.76, 3191-3193 (2000)..

Cen, C. et al. Oxide nanoelectronics on demand.Science323, 1026-1030 (2009)..

Bark, C. W. et al. Tailoring a two-dimensional electron gas at the LaAlO3/SrTiO3(001) interface by epitaxial strain.Proc. Natl Acad. Sci. USA108, 4720-4724 (2011)..

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Over 100-THz bandwidth selective difference frequency generation at LaAlO3/SrTiO3 nanojunctions

Over 100-THz bandwidth selective difference frequency generation at LaAlO3/SrTiO3 nanojunctions

DOI：10.1038/s41377-019-0135-0

摘要

Abstract

关键词

Keywords

references

Over 100-THz bandwidth selective difference frequency generation at LaAlO₃/SrTiO₃ nanojunctions

Over 100-THz bandwidth selective difference frequency generation at LaAlO₃/SrTiO₃ nanojunctions