Analytical Spectroscopy

An introduction to analytical applications in the THz: Albert, S., Petkie, D. T., Bettens, R. P. A., Belov, S. P. & De Lucia, F. C. FASSST: A new Gas-Phase Analytical Tool. Anal. Chem. 70, 719A-727A (1998). Google Scholar

A resurgence of interest in spectroscopic sensors has been fueled by increases in performance made possible by advances in laser systems and applications in medicine, environmental monitoring and national security [1].

SMM sensors based on electronic frequency synthesis and frequency multiplication are comparable to their optical counterparts [1]. Systems based on pulsed lasers and difference frequency mixing have also been reported. If the sensitivity figure of merit is amount of sample, the lower optimum pressure (~10 mTorr) of SMM sensors increases their sensitivity by two to five orders of magnitude relative to Op/IR sensors or sensors based on SMM system with lower resolution.

References

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