Xinliangyou 998 is a new indica two-line hybrid rice variety using Xin＇er Sx H0998 as parent. The variety was introduced and demonstrated in Yingshan County in 2016, and showed intermediate growth duration, strong ti...Xinliangyou 998 is a new indica two-line hybrid rice variety using Xin＇er Sx H0998 as parent. The variety was introduced and demonstrated in Yingshan County in 2016, and showed intermediate growth duration, strong tillering ability, firm culm, tolerance to high fertility and resistance to lodging, tolerance to high tempera- ture and wide range of adaptation, etc. The high-yield cultural techniques were con- cluded.展开更多
Identifying optical modes in chaotic cavities is crucial for exploring and understanding the physical mechanisms inside them.Compared with free spectral range estimation,the direct imaging technique has the capability...Identifying optical modes in chaotic cavities is crucial for exploring and understanding the physical mechanisms inside them.Compared with free spectral range estimation,the direct imaging technique has the capability of providing more precise mode information,but it is extremely time-consuming and susceptible to environmental perturbations.Here we report a high-speed imaging technique for visualizing field distributions in chaotic microcavities.When a silicon microdisk is excited by a femtosecond laser,free carriers are locally generated,thereby reducing the refractive index.Under a constant laser power,the spatial distribution of mode inside the silicon microdisk is proportional to its wavelength shift and can be precisely identified by comparing it with numerical simulation.With the assistance of a galvanometer,imaging a mode profile only takes a few hundred milliseconds to a few seconds,orders of magnitude faster than previous reports.The impacts of slight fabrication deviations on spectra have also been identified.展开更多
Sapphire fiber has been widely utilized in ultra-high-temperature environments.A sapphire fiber Bragg grating(SFBG)is a potential high-temperature sensor,but the multimodal behavior results in a broadband reflection s...Sapphire fiber has been widely utilized in ultra-high-temperature environments.A sapphire fiber Bragg grating(SFBG)is a potential high-temperature sensor,but the multimodal behavior results in a broadband reflection spectrum and poor precision.In this article,we report a helical tapered depressed cladding waveguide(HTDCW)by using a femtosecond laser direct writing technique to realize single-mode operation of SFBG.The HTDCW was created using helical negative refractive index modification by forming a depressed cladding.展开更多
文摘Xinliangyou 998 is a new indica two-line hybrid rice variety using Xin＇er Sx H0998 as parent. The variety was introduced and demonstrated in Yingshan County in 2016, and showed intermediate growth duration, strong tillering ability, firm culm, tolerance to high fertility and resistance to lodging, tolerance to high tempera- ture and wide range of adaptation, etc. The high-yield cultural techniques were con- cluded.
基金National Key Research and Development Program of China(2024YFB2809200)National Natural Science Foundation of China(12334016,12025402,62125501,62335005,12261131500,92250302)+2 种基金New Cornerstone Science Foundation(Xplorer Prize)Shenzhen Fundamental Research Projects(JCYJ20241202123719025,JCYJ20241202123729038)Fundamental Research Funds for the Central Universities(2022FRFK01013)。
文摘Identifying optical modes in chaotic cavities is crucial for exploring and understanding the physical mechanisms inside them.Compared with free spectral range estimation,the direct imaging technique has the capability of providing more precise mode information,but it is extremely time-consuming and susceptible to environmental perturbations.Here we report a high-speed imaging technique for visualizing field distributions in chaotic microcavities.When a silicon microdisk is excited by a femtosecond laser,free carriers are locally generated,thereby reducing the refractive index.Under a constant laser power,the spatial distribution of mode inside the silicon microdisk is proportional to its wavelength shift and can be precisely identified by comparing it with numerical simulation.With the assistance of a galvanometer,imaging a mode profile only takes a few hundred milliseconds to a few seconds,orders of magnitude faster than previous reports.The impacts of slight fabrication deviations on spectra have also been identified.
基金National Key Research and Development Program of China(2023YFB3208600)National Natural Science Foundation of China(62222510,62435012,62375176,T2421003)+1 种基金Guangdong Provincial Department of Science and Technology(2024A1515010108)Ling Chuang Research Project of China National Nuclear Corporation(CNNC-LCKY-2024-067)。
文摘Sapphire fiber has been widely utilized in ultra-high-temperature environments.A sapphire fiber Bragg grating(SFBG)is a potential high-temperature sensor,but the multimodal behavior results in a broadband reflection spectrum and poor precision.In this article,we report a helical tapered depressed cladding waveguide(HTDCW)by using a femtosecond laser direct writing technique to realize single-mode operation of SFBG.The HTDCW was created using helical negative refractive index modification by forming a depressed cladding.
