Terahertz Modulation of Even-order Polarization in GaAs
The application of electric fields induces changes in the symmetry of crystals, which can be observed spectroscopically as variations in the even harmonic generation. In this study, we report the ultrafast modulation of GaAs crystal symmetry using strong terahertz field. The modulation is recorded b...
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| Format: | Article |
| Language: | English |
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IEEE
2025-01-01
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| Series: | IEEE Photonics Journal |
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| Online Access: | https://ieeexplore.ieee.org/document/10829706/ |
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| author | Jianhua Sang Haoyu Huang Liwei Song Ye Tian Ruxin Li |
| author_facet | Jianhua Sang Haoyu Huang Liwei Song Ye Tian Ruxin Li |
| author_sort | Jianhua Sang |
| collection | DOAJ |
| description | The application of electric fields induces changes in the symmetry of crystals, which can be observed spectroscopically as variations in the even harmonic generation. In this study, we report the ultrafast modulation of GaAs crystal symmetry using strong terahertz field. The modulation is recorded by the vibration of even harmonic intensity which depends on the polarization direction and instantaneous field strength of applied terahertz wave. The interference between intrinsic even-order nonlinearity and terahertz induced polarization is analyzed. This work offers a novel approach to determining key parameters, such as crystal orientation and terahertz field strength. |
| format | Article |
| id | doaj-art-f58d55fadde545588f8b6d79d1d3622c |
| institution | Kabale University |
| issn | 1943-0655 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Photonics Journal |
| spelling | doaj-art-f58d55fadde545588f8b6d79d1d3622c2025-01-31T23:04:19ZengIEEEIEEE Photonics Journal1943-06552025-01-011711410.1109/JPHOT.2025.352615210829706Terahertz Modulation of Even-order Polarization in GaAsJianhua Sang0Haoyu Huang1Liwei Song2https://orcid.org/0000-0002-0538-3472Ye Tian3https://orcid.org/0000-0002-5618-5951Ruxin Li4State Key Laboratory of High Field Laser Physics and CAS Center for Excellence in Ultra-intense Laser Science, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai, ChinaDepartment of Physics, University of Hamburg, Hamburg, GermanyState Key Laboratory of High Field Laser Physics and CAS Center for Excellence in Ultra-intense Laser Science, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai, ChinaState Key Laboratory of High Field Laser Physics and CAS Center for Excellence in Ultra-intense Laser Science, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai, ChinaState Key Laboratory of High Field Laser Physics and CAS Center for Excellence in Ultra-intense Laser Science, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai, ChinaThe application of electric fields induces changes in the symmetry of crystals, which can be observed spectroscopically as variations in the even harmonic generation. In this study, we report the ultrafast modulation of GaAs crystal symmetry using strong terahertz field. The modulation is recorded by the vibration of even harmonic intensity which depends on the polarization direction and instantaneous field strength of applied terahertz wave. The interference between intrinsic even-order nonlinearity and terahertz induced polarization is analyzed. This work offers a novel approach to determining key parameters, such as crystal orientation and terahertz field strength.https://ieeexplore.ieee.org/document/10829706/Ultrafast measurementsultrafast nonlinear processesultrafast spectroscopyterahertz |
| spellingShingle | Jianhua Sang Haoyu Huang Liwei Song Ye Tian Ruxin Li Terahertz Modulation of Even-order Polarization in GaAs IEEE Photonics Journal Ultrafast measurements ultrafast nonlinear processes ultrafast spectroscopy terahertz |
| title | Terahertz Modulation of Even-order Polarization in GaAs |
| title_full | Terahertz Modulation of Even-order Polarization in GaAs |
| title_fullStr | Terahertz Modulation of Even-order Polarization in GaAs |
| title_full_unstemmed | Terahertz Modulation of Even-order Polarization in GaAs |
| title_short | Terahertz Modulation of Even-order Polarization in GaAs |
| title_sort | terahertz modulation of even order polarization in gaas |
| topic | Ultrafast measurements ultrafast nonlinear processes ultrafast spectroscopy terahertz |
| url | https://ieeexplore.ieee.org/document/10829706/ |
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