Terahertz and Photoelectron Emission from Nanoporous Gold Films on Semiconductors
Open accessAbstract
Efficient terahertz and photoelectron emission were observed from nano-porous gold (NPG) films deposited on an intrinsic gallium arsenide (GaAs) semiconductor substrate stimulated by femtosecond laser with pulse width of 60 fs. Time-domain THz emission and reflection spectroscopy confirmed that the free charges accelerated by irradiated femtosecond laser pulses transferred from the NPG films into the GaAs substrates. Accordingly, charges accumulation was reduced in the NPG films, resulting in a stronger emission of THz pulse than that from NPG films deposited on SiO2 substrate. Charges injected into the GaAs substrate enforced an observable decrease of the THz refractive index proportional to the intensity of incident light. In comparison, for NPG deposited on glass substrates, laser induced free charges were accumulated in the NPG films, and femtosecond laser pulses irradiating on the NPG films made no changes of the THz refractive index of the glass substrates.
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Nanoscale structuring of metal films enhances THz emission.
“subsequent investigations found enhanced THz emission due to nanoscale structuring, including with gratings175–177, randomly-distributed nanostructuring178–182, and precision lithographically-defined nanostructure arrays159,178 (Fig. 8a).”
From Ultrafast terahertz emission from emerging symmetry-broken materials (2023) · cites this paper as [182]
The Results and discussion report THz emission from nanoporous gold films and up to 1.4-fold enhancement on GaAs compared with SiO2. They attribute that enhancement to the substrate and charge transfer, not to nanoscale structuring; the paper does not compare nanoporous films with unstructured metal films. (LLM, conf=0.85)
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Cites
Femtosecond filamentation in transparent media
Couairon, A., & Mysyrowicz, A. (2007) · Physics Reports · doi:10.1016/j.physrep.2006.12.005 · Cited by 2,857 · see citing works
Metal wires for terahertz wave guiding
Wang, K., & Mittleman, D. M. (2004) · Nature · doi:10.1038/nature03040 · Cited by 1,069 · see citing works
Carrier-induced change in refractive index of InP, GaAs and InGaAsP
Bennett, B. R., Soref, R. A., & del Alamo, J. A. (1990) · IEEE Journal of Quantum Electronics · doi:10.1109/3.44924 · Cited by 1,019 · see citing works
Material parameter estimation with terahertz time-domain spectroscopy
Dorney, T. D., Baraniuk, R. G., & Mittleman, D. M. (2001) · Journal of the Optical Society of America A · doi:10.1364/josaa.18.001562 · Cited by 807 · see citing works
Roskos, H. G., Thomson, M. D., Kreß, M., & Löffler, T. (2007) · Laser & Photonics Review · doi:10.1002/lpor.200710025 · Cited by 478 · see citing works
Ultra-broadband terahertz metamaterial absorber
Zhu, J., Ma, Z., Sun, W., et al. (2014) · Applied Physics Letters · doi:10.1063/1.4890521 · Cited by 444 · see citing works
Spectral dependence of the change in refractive index due to carrier injection in GaAs lasers
HENRY, C. H., Logan, R. A., & Bertness, K. A. (1981) · Journal of Applied Physics · doi:10.1063/1.329371 · Cited by 302 · see citing works
Concentration dependence of the refractive index for n - and p -type GaAs between 1.2 and 1.8 eV
Sell, D. D., Casey, H. C., & Wecht, K. W. (1974) · Journal of Applied Physics · doi:10.1063/1.1663645 · Cited by 256 · see citing works
Dispersion of the Index of Refraction Near the Absorption Edge of Semiconductors
Stern, F. (1964) · Physical Review · doi:10.1103/physrev.133.a1653 · Cited by 236 · see citing works
Broadband terahertz generation from metamaterials
Luo, L., Chatzakis, I., Wang, J., Niesler, F. B. P., Wegener, M., Koschny, T., & Soukoulis, C. M. (2014) · Nature Communications · doi:10.1038/ncomms4055 · Cited by 217 · see citing works
Highly efficient broadband terahertz generation from ultrashort laser filamentation in liquids
Dey, I., Jana, K., Fedorov, V. Y., Koulouklidis, A. D., Mondal, A., Shaikh, M., Sarkar, D., Lad, A. D., Tzortzakis, S., Couairon, A., et al. (2017) · Nature Communications · doi:10.1038/s41467-017-01382-x · Cited by 182 · see citing works
Aeschlimann, M., Schmuttenmaer, C. A., Elsayed-Ali, H. E., Miller, R. J. D., Cao, J., Gao, Y., & Mantell, D. A. (1995) · The Journal of Chemical Physics · doi:10.1063/1.468962 · Cited by 152 · see citing works
Optical rectification at metal surfaces
Kadlec, F., Kužel, P., & Coutaz, J. (2004) · Optics Letters · doi:10.1364/ol.29.002674 · Cited by 138 · see citing works
Terahertz emission via ultrashort-pulse excitation of magnetic metal films
Hilton, D., Averitt, R. D., Meserole, C. A., Fisher, G. L., Funk, D. J., Thompson, J. D., & Taylor, A. J. (2004) · Optics Letters · doi:10.1364/ol.29.001805 · Cited by 124 · see citing works
Terahertz-Pulse Emission Through Laser Excitation of Surface Plasmons in a Metal Grating
Welsh, G. H., Hunt, N. T., & Wynne, K. (2007) · Physical Review Letters · doi:10.1103/physrevlett.98.026803 · Cited by 122 · see citing works
Study of terahertz radiation generated by optical rectification on thin gold films
Kadlec, F., Kužel, P., & Coutaz, J. (2005) · Optics Letters · doi:10.1364/ol.30.001402 · Cited by 111 · see citing works
Optical rectification at metal surfaces
Kadlec, F., Kužel, P., & Coutaz, J. (2006) · International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz) · doi:10.1109/icimw.2005.1572609 · Cited by 96 · see citing works
Refractive index dependence on free carriers for GaAs
Mendoza-Alvarez, J. G., Nunes, F. D., & Patel, N. B. (1980) · Journal of Applied Physics · doi:10.1063/1.328298 · Cited by 93 · see citing works
Femtosecond-laser-driven wire-guided helical undulator for intense terahertz radiation
Tian, Y., Liu, J., Bai, Y., et al. (2017) · Nature Photonics · doi:10.1038/nphoton.2017.16 · Cited by 92 · see citing works
Carrier-Induced Energy-Gap Shrinkage in Current-Injection GaAs/AlGaAs MQW Heterostructures
Tarucha, S., Kobayashi, H., Horíkoshi, Y., et al. (1984) · Japanese Journal of Applied Physics · doi:10.1143/jjap.23.874 · Cited by 83 · see citing works
Large Enhancement of Quantum Dot Fluorescence by Highly Scalable Nanoporous Gold
Zhang, L., Song, Y., Fujita, T., et al. (2013) · Advanced Materials · doi:10.1002/adma.201304503 · Cited by 76 · see citing works
Self-citationRamakrishnan, G., Ramanandan, G. K. P., Adam, A. J. L., et al. (2013) · Optics Express · doi:10.1364/oe.21.016784 · Cited by 43 · see citing works
All-optical ultrafast polarization switching of terahertz radiation by impulsive molecular alignment
Li, M., Pan, H., Tong, Y., et al. (2011) · Optics Letters · doi:10.1364/ol.36.003633 · Cited by 41 · see citing works
Self-citationDual THz Wave and X-ray Generation from a Water Film under Femtosecond Laser Excitation
Huang, H., Nagashima, T., Hsu, W.-H., Juodkazis, S., & Hatanaka, K. (2018) · Nanomaterials · doi:10.3390/nano8070523 · Cited by 32 · see citing works
High-power THz to IR emission by femtosecond laser irradiation of random 2D metallic nanostructures
Zhang, L., Mu, K., Zhou, Y., Wang, H., Zhang, C., & Zhang, X.-C. (2015) · Scientific Reports · doi:10.1038/srep12536 · Cited by 24 · see citing works
Self-citationPlasmon-enhanced terahertz emission from a semiconductor/metal interface
Ramakrishnan, G., Kumar, N., Ramanandan, G. K. P., Adam, A. J. L., Hendrikx, R. W. A., & Planken, P. C. M. (2014) · Applied Physics Letters · doi:10.1063/1.4865906 · Cited by 24 · see citing works
Hussain, B., Ahmed, M., Nawaz, M. Y., Saleem, M. S., Razzaq, M., Zia, M. A., & Iqbal, M. (2012) · Applied Optics · doi:10.1364/ao.51.005326 · Cited by 21 · see citing works
Terahertz modulation induced by filament interaction
He, B., Nan, J., Li, M., et al. (2017) · Optics Letters · doi:10.1364/ol.42.000967 · Cited by 20 · see citing works
Self-citationGaAs Refractive Index Dependence On Carrier Density and Optimizing Terahertz Devices
Kim, C., Wu, D. H., & Graber, B. (2016) · Bulletin of the American Physical Society · Cited by 1 · see citing works
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Ultrafast terahertz emission from emerging symmetry-broken materials
Pettine, J., Padmanabhan, P., Sirica, N., Prasankumar, R. P., Taylor, A. J., & Chen, H.-T. (2023) · Light: Science & Applications · doi:10.1038/s41377-023-01163-w · Cited by 81 · see citing works
- Authors
- Nan, J., Li, M., Zhang, L., Yuan, S., He, B., & Zeng, H.
- Affiliations
- East China Normal University (CN)
- University of Shanghai for Science and Technology (CN)
- Corresponding author
- Zeng, Heping
- Venue
- Nanomaterials
- Publisher
- MDPI AG
- Published
- 2019-03-12
- Volume
- 9
- Issue
- 3
- Pages
- 419
- ISSN
- 2079-4991 (ISSN-L)
- PMC
- PMC6474000
- OpenAlex
- W2922293327
- Cited by
- 2
- References
- 29
- Citations by year
- 2023: 1 · 2021: 1
- FWCI
- 0.09
- Type
- journal article
- Language
- en
- Open access
- gold
- dx.doi.org
- Licence
- Locations
- Nanomaterials (publishedVersion, cc-by)
- PubMed Central (publishedVersion, cc-by)
- PubMed (publishedVersion)
- DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
- Topics
- Physical Sciences › Engineering › Electrical and Electronic Engineering › Terahertz technology and applications
- Physical Sciences › Physics and Astronomy › Atomic and Molecular Physics, and Optics › Laser-Matter Interactions and Applications
- Physical Sciences › Engineering › Computational Mechanics › Laser Material Processing Techniques
- Keywords
- nanoporous gold films, terahertz emission, photoemission, femtosecond laser, GaAs substrate, charge injection, terahertz refractive index, terahertz time-domain spectroscopy
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