Wen-Bin Yan, Yei Wo, J. Dudek, P. Rabinowitz, K. Lehmann
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A trace gas measurement device using cavity ring-down spectroscopy
Since 1995, MEECO Inc., in collaboration with Princeton University, has been developing cavity ring-down spectroscopy (CRDS) for trace gas measurement. This work provided the first demonstration that CRDS could be used with highly attractive continuous wave (CW) semiconductor diode lasers. CW single-mode semiconductor diode lasers make CRDS commercially viable, thanks to their small size, low power requirements, long lifetime, monolithic construction, and modest cost.