标题： 钻石布里渊激光器 显示英文标题

标题： Diamond Brillouin Lasers

摘要： 通过受激布里渊散射（SBS）实现的光波和声波之间的相干相互作用是操控GHz频率光波的基本工具。其窄带和噪声抑制特性最近使得基于硫系玻璃、二氧化硅和硅的集成器件中实现了微波光子功能。金刚石具有更高的声学和带隙频率以及优越的热性能，有望提高频率、带宽和功率；然而，目前制造出与布里渊频移共振匹配的低损耗光学和声学引导结构仍具有挑战性。在这里，我们使用强腔增强拉曼生成来驱动没有声学引导的金刚石布里渊激光器。我们的多功能配置——首次演示的自由空间布里渊激光器——在71 GHz斯托克斯频移下提供了数十瓦的连续布里渊激光输出，并可在单个斯托克斯和布里渊频梳输出之间进行用户切换。这些结果为高功率、高相干性的激光器和布里渊频梳打开了大门，并且是向片上金刚石SBS器件迈出的重要一步。 显示英文摘要

摘要： The coherent interaction between optical and acoustic waves via stimulated Brillouin scattering (SBS) is a fundamental tool for manipulating light at GHz frequencies. Its narrowband and noise-suppressing characteristics have recently enabled microwave-photonic functionality in integrated devices based on chalcogenide glasses, silica and silicon. Diamond possesses much higher acoustic and bandgap frequencies and superior thermal properties, promising increased frequency, bandwidth and power; however, fabrication of low-loss optical and acoustic guidance structures with the resonances matched to the Brillouin shift is currently challenging. Here we use intense cavity-enhanced Raman generation to drive a diamond Brillouin laser without acoustic guidance. Our versatile configuration - the first demonstration of a free-space Brillouin laser - provides tens-of-watts of continuous Brillouin laser output on a 71 GHz Stokes shift with user switching between single Stokes and Brillouin frequency comb output. These results open the door to high-power, high-coherence lasers and Brillouin frequency combs, and are a major step towards on-chip diamond SBS devices.