用于解析1-5 THz频率范围内氨的光谱特征的等离子体外差光谱法
Plasmonic Heterodyne Spectrometry for Resolving the Spectral Signatures of Ammonia over a 1-5 THz Frequency Range
AI总结：
本研究提出基于等离子体光混频的太赫兹外差光谱平台，用等离子体光混频器和外差光泵浦光束替代传统外差光谱仪的对应部件，实现1-5 THz范围内氨的窄光谱特征解析，突破了传统器件的带宽限制。
摘要：
我们提出了一种基于等离子体光混频的太赫兹外差光谱平台，该平台能够在宽太赫兹频率范围内解析气体的窄光谱特征。该等离子体外差光谱仪分别用等离子体光混频器和外差光泵浦光束替代了传统外差光谱仪的太赫兹混频器和本地振荡器。外差光泵浦光束由两束连续波、波长可调的激光形成，其太赫兹拍频可大范围调谐。这种可大范围调谐的太赫兹拍频使得光谱测量能够在宽带宽下进行，不受传统太赫兹混频器和本地振荡器带宽限制的约束。我们使用该等离子体外差光谱平台解析了1-5 THz频率范围内氨的光谱特征。
英文摘要：
We present a heterodyne terahertz spectrometry platform based on plasmonic photomixing, which enables the resolution of narrow spectral signatures of gases over a broad terahertz frequency range. This plasmonic heterodyne spectrometer replaces the terahertz mixer and local oscillator of conventional heterodyne spectrometers with a plasmonic photomixer and a heterodyning optical pump beam, respectively. The heterodyning optical pump beam is formed by two continuous-wave, wavelength-tunable lasers with a broadly tunable terahertz beat frequency. This broadly tunable terahertz beat frequency enables spectrometry over a broad bandwidth, which is not restricted by the bandwidth limitations of conventional terahertz mixers and local oscillators. We use this plasmonic heterodyne spectrometry platform to resolve the spectral signatures of ammonia over a 1-5 THz frequency range.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
