Whispering Gallery Mode Lasing Performance’s Evolution of Floating GaN Microdisks Varying with Their Thickness
| العنوان: | Whispering Gallery Mode Lasing Performance’s Evolution of Floating GaN Microdisks Varying with Their Thickness |
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| المؤلفون: | Gangyi Zhu, Mufei Tian, M. Almokhtar, Feifei Qin, Binghui Li, Mengyao Zhou, Fei Gao, Ying Yang, Xin Ji, Siqing He, Yongjin Wang |
| المصدر: | Chinese Physics Letters. 39:123401 |
| بيانات النشر: | IOP Publishing, 2022. |
| سنة النشر: | 2022 |
| مصطلحات موضوعية: | General Physics and Astronomy |
| الوصف: | Optical gain and loss of microcavity greatly affect the quality of lasing, how to improve optical gain and decrease optical loss is of great significance for the preparation of laser. In this study, four types standard microdisks with different thicknesses of 2.2 μm, 1.9 μm, 1.7 μm, and 1.45 μm were fabricated by micromachining technology process to modulate optical gain and loss of microdisk lasing. The whispering gallery mode lasing in the ultraviolet range of GaN microdisk devices was investigated for these devices in order to clarify the effect of microdisk thickness on device characteristics. The quality factor Q and lasing mode number for different thicknesses are calculated from the stimulated spectra. The lifetimes of the exciton combination properties of the devices were observed using time-resolved PL spectroscopy. The lasing modes are modulated, and the lifetime decreases, while the Q factor of the devices first increases and then decreases with decreasing thickness. All these results are induced by optical gain and loss competition. |
| تدمد: | 1741-3540 0256-307X |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::fa486c6775eb5754808d33fe72ec6547 https://doi.org/10.1088/0256-307x/39/12/123401 |
| حقوق: | CLOSED |
| رقم الأكسشن: | edsair.doi...........fa486c6775eb5754808d33fe72ec6547 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 17413540 0256307X |
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