Critical spatial disorder in InGaN resonant Bragg structures
We study a disorder-induced transformation of the resonant optical reflection from a nearly periodic system of quasi-2D excitons in the InGaN quantum wells arranged as a resonant Bragg structure (RBS). We show that there is a critical deviation from the exact periodicity when the reflection by a sin...
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| Veröffentlicht in: | Applied physics letters 2022-07, Vol.121 (4) |
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| container_title | Applied physics letters |
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| creator | Ivanov, A. A. Chaldyshev, V. V. Ushanov, V. I. Zavarin, E. E. Sakharov, A. V. Lundin, W. V. Tsatsulnikov, A. F. |
| description | We study a disorder-induced transformation of the resonant optical reflection from a nearly periodic system of quasi-2D excitons in the InGaN quantum wells arranged as a resonant Bragg structure (RBS). We show that there is a critical deviation from the exact periodicity when the reflection by a single super-radiant exciton–polariton mode is transformed into a multimode spectrum. This critical disorder appears to be inversely proportional to the number of periods in the RBS. Using a numerical model which describes the experimentally observed optical spectra, we found the critical standard deviation from exact periodicity to be 1.76%, 1.0%, and 0.45% for InGaN-based RBS with 60, 100, and 200 periods, respectively. |
| doi_str_mv | 10.1063/5.0095417 |
| format | Article |
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Using a numerical model which describes the experimentally observed optical spectra, we found the critical standard deviation from exact periodicity to be 1.76%, 1.0%, and 0.45% for InGaN-based RBS with 60, 100, and 200 periods, respectively.</description><subject>Applied physics</subject><subject>Excitons</subject><subject>Numerical models</subject><subject>Optical reflection</subject><subject>Polaritons</subject><subject>Quantum wells</subject><issn>0003-6951</issn><issn>1077-3118</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2022</creationdate><recordtype>article</recordtype><recordid>eNqdkEFLxDAQhYMouK4e_AcFTwpdk6ZJGvCiRdeFRS96DmmSLlnWpk5SwX9vZBe8e5k3M3zM8B5ClwQvCOb0li0wlqwm4gjNCBaipIQ0x2iGMaYll4ycorMYt3lkFaUzdNeCT97oXRFHnXxW62MA66DwQ7EalvqlABfDoIdUPIDebIqYYDJpyttzdNLrXXQXB52j96fHt_a5XL8uV-39ujS0EqlkHTXaUFYR2RCda1dzK62RHXbaCWlzy3RjhcCiZ5y7jlOsm7pnlaw7IegcXe3vjhA-JxeT2oYJhvxSVVzW2XeF60xd7ykDIUZwvRrBf2j4VgSr33AUU4dwMnuzZ6PxKfsOw__grwB_oBptT38ATrRxaw</recordid><startdate>20220725</startdate><enddate>20220725</enddate><creator>Ivanov, A. 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| ispartof | Applied physics letters, 2022-07, Vol.121 (4) |
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| subjects | Applied physics Excitons Numerical models Optical reflection Polaritons Quantum wells |
| title | Critical spatial disorder in InGaN resonant Bragg structures |
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