A5006990619- Energy, Environment, Economic Growth
- Energy, Environment, and Transportation Policies
- Air Quality and Health Impacts
- Photonic and Optical Devices
- Optical Coatings and Gratings
- Solid State Laser Technologies
- Photonic Crystals and Applications
- Advanced Fiber Laser Technologies
- Photorefractive and Nonlinear Optics
Shandong University
2006-2024
We report on a diode-pumped Nd:YAG ceramic laser operating at 1442.8 nm for the first time. In our experiment, two different ceramics with Nd-doped concentrations of 1.0 and 0.6 at. % concentration were used as gain mediums, respectively. At pump power 20.7 W, maximum output up to 3.96 W optical-to-optical efficiency 19.1% was obtained by using medium. To best knowledge, this is highest LD-pumped 1.44 μm crystal laser.
A plane-wave-based approach for complex photonic band structure is developed and applied to analyse the behaviour of electromagnetic (EM) waves at surface semi-infinite finite crystals (PCs). The structures two-dimensional three-dimensional PCs have been calculated by present verified conventional plane wave expansion method transfer matrix method. Based on eigen modes approach, equations in form are given describe boundary conditions PCs, consequently EM discussed. These results also...
Abstract Previous research has yielded varied conclusions regarding the effect of business environment (BE) optimization to improve carbon emission efficiency (CEE). In this study, CEE and BE are assessed using energy consumption economic growth data from 30 provinces in China. The employs fixed effects, quantile, mediation models analyze direct impact, nonlinear characteristics, mechanism, heterogeneity on CEE. found that. Firstly, enhances CEE, with a 1% increase leading 0.095% improvement...