基于光纤的电光双光梳光源用于快速线性和非线性光谱学
Fiber-based electro-optic dual-comb light source for fast linear and nonlinear spectroscopy
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中文总结 AI 辅助
提出全光纤保偏电光双光梳光源，兼顾10 THz带宽与2.5 MHz采集速度，适用于快速线性和非线性光谱学。
中文摘要 AI 辅助
双光梳光谱学（DCS）通过将光学光谱映射到射频（RF）域，实现快速、宽带和高分辨率的光学测量。然而，传统DCS系统从根本上受到光学带宽与干涉图采集速度之间权衡的限制，制约了其整体性能。在此，我们展示了一种全光纤、保偏（PM）频率捷变电光调制（EOM）双光梳光源，该光源同时实现了10 THz的宽光学带宽和高达2.5 MHz的高干涉图采集速度。高采集速率通过基于同相/正交（IQ）调制器的架构实现，该架构用于移频其中一个光梳的载波频率。我们通过概念验证的线性光谱学和非线性双光梳相干反斯托克斯拉曼散射（CARS）光谱学测量，展示了该光源的性能。大光谱覆盖范围、高刷新率与全PM光纤配置的结合，使该双光梳平台在快速分子光谱学和高速度非线性光谱成像等应用中具有吸引力。
英文摘要
Dual-comb spectroscopy (DCS) enables rapid, broadband and high-resolution optical measurements by mapping optical spectra into the radio frequency (RF) domain. However, conventional DCS systems are fundamentally constrained by a tradeoff between optical bandwidth and interferogram acquisition speed, limiting their overall performance. Here, we demonstrate an all-fiber, polarization-maintaining (PM) frequency-agile electro-optic modulation (EOM) dual-comb source that simultaneously achieves a broad optical bandwidth of 10 THz and a high interferogram acquisition speed of up to 2.5 MHz. The high acquisition rate is enabled through an in-phase/quadrature (IQ) modulator-based architecture to shift the carrier frequency of one of the combs. We illustrate the performance of the source through proof-of-concept linear spectroscopy and nonlinear dual-comb coherent anti-Stokes Raman scattering (CARS) spectroscopy measurements. The combination of large spectral coverage, high refresh rate and an all-PM fiber configuration makes this dual-comb platform attractive for applications such as rapid molecular spectroscopy and high-speed nonlinear spectroscopic imaging.
发表机构
- University of Lille（里尔大学）
- Aix Marseille University（艾克斯-马赛大学）
- Institut Universitaire de France (IUF)（法国高等研究院）
机构由 AI 辅助整理，请以论文原文为准。
