Ultra-sensitive cavity ring-down spectroscopy in the mid-infrared spectral region

Long D. A.; Fleisher A. J.; Liu Q.; Hodges J. T.

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Ultra-sensitive cavity ring-down spectroscopy in the mid-infrared spectral region

机译：中红外光谱区的超灵敏腔衰荡光谱

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We describe an ultra-sensitive cavity ring-down spectrometer which operates in the mid-infrared spectral region near 4.5 mu m. With this instrument a noise-equivalent absorption coefficient of 2.6 x 10(-11) cm(-1) Hz(-1/2) was demonstrated with less than 150 nW of optical power incident on the photodetector. Quantum noise was observed in the individual ring-down decay events, leading to quantum-noise-limited short-time performance. We believe that this spectrometer's combination of high sensitivity and robustness make it well suited for measurements of ultra-trace gas species as well as applications in optics and fundamental physics.

机译：我们描述了一种超灵敏腔衰荡光谱仪，该光谱仪在4.5微米附近的中红外光谱区域中工作。用该仪器证明了等效噪声吸收系数为2.6 x 10（-11）cm（-1）Hz（-1/2），入射到光电探测器的光功率小于150 nW。在单个衰荡衰变事件中观察到量子噪声，从而导致量子噪声受限的短时性能。我们相信，这种光谱仪兼具高灵敏度和耐用性，非常适合用于测量超痕量气体，以及在光学和基础物理学中的应用。

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《Optics Letters》 |2016年第7期|共4页
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Long D. A.; Fleisher A. J.; Liu Q.; Hodges J. T.;
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1. Ultra-sensitive cavity ring-down spectroscopy in the mid-infrared spectral region [J] . Long D. A., Fleisher A. J., Liu Q., Optics Letters . 2016,第7期

机译：中红外光谱区的超灵敏腔衰荡光谱
2. Ultra-sensitive cavity ring-down spectroscopy in the mid-infrared spectral region [J] . Long D. A., Fleisher A. J., Liu Q., Optics Letters . 2016,第7期

机译：中红外光谱区的超灵敏腔衰荡光谱
3. Optimal spectral region for real-time monitoring of sub-ppm levels of water in phosphine by cavity ring-down spectroscopy [J] . Susan Y. Lehman, Kris A. Bertness, Joseph T. Hodges Journal of Crystal Growth . 2004,第2a3期

机译：通过腔衰荡光谱实时监测磷化氢中亚ppm级水的最佳光谱区域
4. Evanescent wave cavity ring-down spectroscopy for ultra-sensitive chemical detection [C] . Andrew C. R. Pipino Conference on advanced sensors and monitors for process industries and the environment . 1999

机译：蒸发波腔折断光谱，用于超敏化学检测
5. Instrument Development and Measurements of the Atmospheric Pollutants Sulfur Dioxide, Nitrate Radical, and Nitrous Acid by Cavity Ring-down Spectroscopy and Cavity Enhanced Absorption Spectroscopy [D] . Medina, David Salvador 2011

机译：腔衰荡光谱和腔增强吸收光谱法测定大气污染物二氧化硫，硝酸根和亚硝酸的仪器开发和测量
6. Ultra-sensitive cavity ring-down spectroscopy in the mid-infrared spectral region [O] . D. A. Long, A. J. Fleisher, Q. Liu, -1

机译：中红外光谱区的超灵敏腔衰荡光谱
7. Ultra-Sensitive Elemental and Isotope Measurements with Compact Plasma Source Cavity Ring-Down Spectroscopy (CPS-CRDS) [O] . Duan, Yixiang, Wang, Chuji, Winstead, Christopher B. 2005

机译：使用紧凑型等离子体源腔衰荡光谱（Cps-CRDs）进行超灵敏元素和同位素测量
8. Ultra-Sensitive Elemental and Isotope Measurements with Compact Plasma Source Cavity Ring-Down Spectroscopy (CPS-CRDS) [R] . 2004

机译：使用紧凑型等离子体源腔衰荡光谱（Cps-CRDs）进行超灵敏元素和同位素测量

Ultra-sensitive cavity ring-down spectroscopy in the mid-infrared spectral region

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