Core Insights - The article discusses a groundbreaking spectroscopy technology called RAFAEL, developed by a research team led by Professor Fang Lu from Tsinghua University, which addresses the long-standing resolution-efficiency trade-off in traditional spectroscopy methods [2][3]. Group 1: Technology Overview - RAFAEL technology utilizes integrated lithium niobate photonics to achieve a spectral resolution of 0.5 Å, an optical transmittance of 73.2%, and a spatial resolution of 2048×2048 [3][6]. - The design employs bulk lithium niobate as an interference mask, enabling pixel-level electrically tunable spectral response while maintaining high optical transmittance [6]. Group 2: Performance Metrics - RAFAEL captures snapshot spectra at a frequency of 88 Hz across the 400-1000 nm wavelength range, achieving a spectral resolution of approximately 0.5 Å and a total optical transmittance of 73.2% [6]. - Compared to cutting-edge spectral imaging devices, RAFAEL's optical transmittance is improved by two times, and its spectral resolution capability is enhanced by nearly two orders of magnitude [6]. Group 3: Applications and Impact - RAFAEL can capture the sub-Ångström spectra of up to 5600 stars in a single snapshot, significantly increasing observational efficiency by 100 to 10,000 times compared to the world's top astronomical spectrometers [6]. - This high-performance and easily integrable snapshot spectroscopy technology is expected to drive breakthroughs in various fields, including materials science and astrophysics [6].