The detection and measurement of gas concentrations using the characteristic optical
absorption of the gas species is important for both understanding and monitoring a variety of …

Cavity-enhanced direct frequency comb spectroscopy combines broad spectral bandwidth,
high spectral resolution, precise frequency calibration, and ultrahigh detection sensitivity, all …

光程吸收光谱技术是吸收光谱技术发展中的一个重要分支, 近年来基于不同光源技术,
吸收腔技术, 探测方式的光程吸收光谱技术大量涌现. 随着对探测灵敏度和吸收光程长度需求的 …

A high-finesse optical cavity was employed to perform highly sensitive spectroscopy of
molecular oxygen at wavelengths near 763 nm. An equivalent absorption length of∼ 1 km …

全球气候变化给人类生活带来的影响受到世界各国的普遍关注, 温室气体是影响和改变全球气候
的关键因素之一, 限制和降低温室气体排放量成为人类发展的重要议题. 温室气体大多都在10r6 …

Spectroscopy of whispering-gallery mode microresonators has become a powerful scientific
tool, enabling the detection of single viruses, nanoparticles and even single molecules. Yet …

We discuss the use of single-mode cavity ringdown spectroscopy with pulsed lasers for
quantitative gas density and line strength measurements. The single-mode approach to …

The theoretical bases of saturated-absorption cavity ring-down (SCAR) spectroscopy are
treated and described in detail in different transition broadening regimes. All the …

We demonstrate a simple periodically locked cw cavity ringdown spectroscopy technique
that enables a very large number of ringdown events to be rapidly acquired. An external …

We report what we believe to be the first systematic study of Doppler-free, nonlinear
absorption by use of cavity ringdown spectroscopy. We have developed a variant of cavity …