Toward High-Power Terahertz Emitters Using Large Aperture ZnSe Photoconductive Antennas
We investigate the generation of free-space terahertz (THz) radiation from photoconductive antennas using single crystal and polycrystalline ZnSe substrates. The photoconductive antennas have been excited above (400 nm) and below (800 nm) the bandgap. We investigate the dependence of the THz electri...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
IEEE
2011-01-01
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| Series: | IEEE Photonics Journal |
| Subjects: | |
| Online Access: | https://ieeexplore.ieee.org/document/5714708/ |
| _version_ | 1818408600539758592 |
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| author | X. Ropagnol R. Morandotti T. Ozaki M. Reid |
| author_facet | X. Ropagnol R. Morandotti T. Ozaki M. Reid |
| author_sort | X. Ropagnol |
| collection | DOAJ |
| description | We investigate the generation of free-space terahertz (THz) radiation from photoconductive antennas using single crystal and polycrystalline ZnSe substrates. The photoconductive antennas have been excited above (400 nm) and below (800 nm) the bandgap. We investigate the dependence of the THz electric field radiated from biased ZnSe emitters on the applied bias field and on the incident optical fluence for bias fields as high as 26 kV/cm and for optical fluences of 0.005-3 mJ cm<sup>-2</sup>. The saturation fluence is observed to be significantly different both above and below bandgap excitation. These results show that, in comparison with GaAs substrates, ZnSe has strong potential as a high-power THz emitter. |
| first_indexed | 2024-12-14T09:46:19Z |
| format | Article |
| id | doaj.art-0d76fe669c1648cca0b97591fd95dcfe |
| institution | Directory Open Access Journal |
| issn | 1943-0655 |
| language | English |
| last_indexed | 2024-12-14T09:46:19Z |
| publishDate | 2011-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Photonics Journal |
| spelling | doaj.art-0d76fe669c1648cca0b97591fd95dcfe2022-12-21T23:07:37ZengIEEEIEEE Photonics Journal1943-06552011-01-013217418610.1109/JPHOT.2011.21161125714708Toward High-Power Terahertz Emitters Using Large Aperture ZnSe Photoconductive AntennasX. Ropagnol0R. Morandotti1T. Ozaki2M. Reid3<formula formulatype="inline"><tex Notation="TeX">$^{1}$</tex></formula>INRS-EMT, Advanced Laser Light Source , Université du Québec, Varennes, CanadaAdv. Laser Light Source, Univ. du Quebec, Varennes, QC, CanadaAdv. Laser Light Source, Univ. du Quebec, Varennes, QC, Canada<formula formulatype="inline"><tex Notation="TeX">$^{2}$</tex></formula>Department of Physics, University of Northern British Columbia, Prince George, CanadaWe investigate the generation of free-space terahertz (THz) radiation from photoconductive antennas using single crystal and polycrystalline ZnSe substrates. The photoconductive antennas have been excited above (400 nm) and below (800 nm) the bandgap. We investigate the dependence of the THz electric field radiated from biased ZnSe emitters on the applied bias field and on the incident optical fluence for bias fields as high as 26 kV/cm and for optical fluences of 0.005-3 mJ cm<sup>-2</sup>. The saturation fluence is observed to be significantly different both above and below bandgap excitation. These results show that, in comparison with GaAs substrates, ZnSe has strong potential as a high-power THz emitter.https://ieeexplore.ieee.org/document/5714708/Terahertz (THz) sourcessemiconductor materialssecond harmonic generationterahertztwo-photon processes |
| spellingShingle | X. Ropagnol R. Morandotti T. Ozaki M. Reid Toward High-Power Terahertz Emitters Using Large Aperture ZnSe Photoconductive Antennas IEEE Photonics Journal Terahertz (THz) sources semiconductor materials second harmonic generation terahertz two-photon processes |
| title | Toward High-Power Terahertz Emitters Using Large Aperture ZnSe Photoconductive Antennas |
| title_full | Toward High-Power Terahertz Emitters Using Large Aperture ZnSe Photoconductive Antennas |
| title_fullStr | Toward High-Power Terahertz Emitters Using Large Aperture ZnSe Photoconductive Antennas |
| title_full_unstemmed | Toward High-Power Terahertz Emitters Using Large Aperture ZnSe Photoconductive Antennas |
| title_short | Toward High-Power Terahertz Emitters Using Large Aperture ZnSe Photoconductive Antennas |
| title_sort | toward high power terahertz emitters using large aperture znse photoconductive antennas |
| topic | Terahertz (THz) sources semiconductor materials second harmonic generation terahertz two-photon processes |
| url | https://ieeexplore.ieee.org/document/5714708/ |
| work_keys_str_mv | AT xropagnol towardhighpowerterahertzemittersusinglargeapertureznsephotoconductiveantennas AT rmorandotti towardhighpowerterahertzemittersusinglargeapertureznsephotoconductiveantennas AT tozaki towardhighpowerterahertzemittersusinglargeapertureznsephotoconductiveantennas AT mreid towardhighpowerterahertzemittersusinglargeapertureznsephotoconductiveantennas |