发表机构
Department of Mechanical and Automation Engineering, The Chinese University of Hong Kong（香港中文大学机械与自动化工程学系）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
本研究开发了结合腔衰荡读出的腔内置双共振受激拉曼光谱技术，实现千赫兹级光谱分辨率，首次测得氢转动拉曼跃迁S₀(1)和S₀(0)的完整迪克窄化演化，为气相拉曼线形测量建立基准并约束压力相关线宽模型。
AI 中文摘要
氢（H₂）的气相转动拉曼线形计量极具挑战性，因其拉曼散射截面弱且线宽本征狭窄。我们首次测量了氢转动拉曼跃迁S₀(1)和S₀(0)的完整迪克窄化演化，该成果依托腔内置双共振受激拉曼光谱技术结合腔衰荡读出，实现了千赫兹级光谱分辨率。我们的结果为气相拉曼线形测量建立了基准，并为基于区域的压力相关线宽模型提供了严格约束。
英文摘要
Gas-phase rotational Raman lineshape metrology of hydrogen (H2) is challenging due to its weak Raman scattering cross-sections and intrinsically narrow linewidths. We report the first measurement of the complete Dicke-narrowing evolution of the H2 rotational Raman transitions S0(1) and S0(0), enabled by intracavity dual-resonance stimulated Raman spectroscopy with cavity ringdown readout and kHz-level spectral resolution. Our results establish a benchmark for gas-phase Raman lineshape measurements and provide stringent constraints for regime-based pressure-dependent linewidth models.
