Effects of localized laser-induced heating in the photoluminescence of silicon-vacancy color centers in 4H-SiC
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arXiv
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| Main Authors: | , , , |
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| Format: | Preprint |
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2024
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| _version_ | 1866909346783297536 |
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| author | Misiara, Adolfo Revesz, Stephen Boulares, Ibrahim Li, Hebin |
| author_facet | Misiara, Adolfo Revesz, Stephen Boulares, Ibrahim Li, Hebin |
| contents | Silicon vacancy ($\mathrm{V_{Si}}$) color centers in 4H-SiC are optically accessible through their zero-phonon line (ZPL) photoluminescence (PL), which is sensitive to the sample temperature. We report the effects of localized laser-induced heating in 4H-SiC by measuring the PL spectra of $\mathrm{V_{Si}}$ color centers. The effects of laser-induced heating manifest as the decrease in the peak height, redshift, and broadening of the ZPLs in the PL spectrum. The local temperature in the sample can be determined from the center energy of the ZPLs by using the Varshni equation. The sample temperature can be modeled as a system in contact with a thermal reservoir while being heated by a laser beam. This work highlights the importance of considering laser-induced heating in the optical properties of color centers in 4H-SiC and their potential applications. The result also suggests that the sharp and bright ZPLs of color centers can be used as local temperature probes in 4H-SiC devices. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2410_09333 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Effects of localized laser-induced heating in the photoluminescence of silicon-vacancy color centers in 4H-SiC Misiara, Adolfo Revesz, Stephen Boulares, Ibrahim Li, Hebin Materials Science Optics Silicon vacancy ($\mathrm{V_{Si}}$) color centers in 4H-SiC are optically accessible through their zero-phonon line (ZPL) photoluminescence (PL), which is sensitive to the sample temperature. We report the effects of localized laser-induced heating in 4H-SiC by measuring the PL spectra of $\mathrm{V_{Si}}$ color centers. The effects of laser-induced heating manifest as the decrease in the peak height, redshift, and broadening of the ZPLs in the PL spectrum. The local temperature in the sample can be determined from the center energy of the ZPLs by using the Varshni equation. The sample temperature can be modeled as a system in contact with a thermal reservoir while being heated by a laser beam. This work highlights the importance of considering laser-induced heating in the optical properties of color centers in 4H-SiC and their potential applications. The result also suggests that the sharp and bright ZPLs of color centers can be used as local temperature probes in 4H-SiC devices. |
| title | Effects of localized laser-induced heating in the photoluminescence of silicon-vacancy color centers in 4H-SiC |
| topic | Materials Science Optics |
| url | https://arxiv.org/abs/2410.09333 |