Multi-photon absorption and third-order nonlinearity in silicon at mid-infrared wavelengths
Silicon based nonlinear photonics has been extensively researched at telecom wavelengths in recent years. However, studies of Kerr nonlinearity in silicon at mid-infrared wavelengths still remain limited. Here, we report the wavelength dependency of third-order nonlinearity in the spectral range fro...
| Main Authors: | , , , , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2014
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| Online Access: | https://hdl.handle.net/10356/101305 http://hdl.handle.net/10220/18383 |
| _version_ | 1826130195363397632 |
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| author | Wang, Ting Venkatram, Nalla Gosciniak, Jacek Cui, Yuanjing Qian, Guodong Ji, Wei Tan, Dawn T. H. |
| author2 | School of Physical and Mathematical Sciences |
| author_facet | School of Physical and Mathematical Sciences Wang, Ting Venkatram, Nalla Gosciniak, Jacek Cui, Yuanjing Qian, Guodong Ji, Wei Tan, Dawn T. H. |
| author_sort | Wang, Ting |
| collection | NTU |
| description | Silicon based nonlinear photonics has been extensively researched at telecom wavelengths in recent years. However, studies of Kerr nonlinearity in silicon at mid-infrared wavelengths still remain limited. Here, we report the wavelength dependency of third-order nonlinearity in the spectral range from 1.6 µm to 6 µm, as well as multi-photon absorption coefficients in the same range. The third-order nonlinear coefficient n2 was measured with a peak value of 1.65 × 10−13 cm2/W at a wavelength of 2.1 µm followed by the decay of nonlinear refractive index n2 up to 2.6 µm. Our latest measurements extend the wavelength towards 6 µm, which show a sharp decrement of n2 beyond 2.1 µm and steadily retains above 3 µm. In addition, the analysis of three-photon absorption and four-photon absorption processes are simultaneously performed over the wavelength range from 2.3 µm to 4.4 µm. Furthermore, the effect of multi-photon absorption on nonlinear figure of merit in silicon is discussed in detail. |
| first_indexed | 2024-10-01T07:52:31Z |
| format | Journal Article |
| id | ntu-10356/101305 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T07:52:31Z |
| publishDate | 2014 |
| record_format | dspace |
| spelling | ntu-10356/1013052023-02-28T19:38:13Z Multi-photon absorption and third-order nonlinearity in silicon at mid-infrared wavelengths Wang, Ting Venkatram, Nalla Gosciniak, Jacek Cui, Yuanjing Qian, Guodong Ji, Wei Tan, Dawn T. H. School of Physical and Mathematical Sciences DRNTU::Science::Physics::Optics and light Silicon based nonlinear photonics has been extensively researched at telecom wavelengths in recent years. However, studies of Kerr nonlinearity in silicon at mid-infrared wavelengths still remain limited. Here, we report the wavelength dependency of third-order nonlinearity in the spectral range from 1.6 µm to 6 µm, as well as multi-photon absorption coefficients in the same range. The third-order nonlinear coefficient n2 was measured with a peak value of 1.65 × 10−13 cm2/W at a wavelength of 2.1 µm followed by the decay of nonlinear refractive index n2 up to 2.6 µm. Our latest measurements extend the wavelength towards 6 µm, which show a sharp decrement of n2 beyond 2.1 µm and steadily retains above 3 µm. In addition, the analysis of three-photon absorption and four-photon absorption processes are simultaneously performed over the wavelength range from 2.3 µm to 4.4 µm. Furthermore, the effect of multi-photon absorption on nonlinear figure of merit in silicon is discussed in detail. Published version 2014-01-03T03:45:50Z 2019-12-06T20:36:27Z 2014-01-03T03:45:50Z 2019-12-06T20:36:27Z 2013 2013 Journal Article Wang, T., Venkatram, N., Gosciniak, J., Cui, Y., Qian, G., Ji, W., et al. (2013). Multi-photon absorption and third-order nonlinearity in silicon at mid-infrared wavelengths. Optics express, 21(26), 32192-32198. 1094-4087 https://hdl.handle.net/10356/101305 http://hdl.handle.net/10220/18383 10.1364/OE.21.032192 en Optics express application/pdf |
| spellingShingle | DRNTU::Science::Physics::Optics and light Wang, Ting Venkatram, Nalla Gosciniak, Jacek Cui, Yuanjing Qian, Guodong Ji, Wei Tan, Dawn T. H. Multi-photon absorption and third-order nonlinearity in silicon at mid-infrared wavelengths |
| title | Multi-photon absorption and third-order nonlinearity in silicon at mid-infrared wavelengths |
| title_full | Multi-photon absorption and third-order nonlinearity in silicon at mid-infrared wavelengths |
| title_fullStr | Multi-photon absorption and third-order nonlinearity in silicon at mid-infrared wavelengths |
| title_full_unstemmed | Multi-photon absorption and third-order nonlinearity in silicon at mid-infrared wavelengths |
| title_short | Multi-photon absorption and third-order nonlinearity in silicon at mid-infrared wavelengths |
| title_sort | multi photon absorption and third order nonlinearity in silicon at mid infrared wavelengths |
| topic | DRNTU::Science::Physics::Optics and light |
| url | https://hdl.handle.net/10356/101305 http://hdl.handle.net/10220/18383 |
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