Cavity Enhanced Absorption Spectroscopy Sensor
نویسندگان
چکیده
منابع مشابه
Cavity-enhanced absorption spectroscopy of molecular oxygen
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 was obtained by a 26-cm-long optical cavity with a finesse of 6000. An extended cavity diode laser was frequency locked to the cavity, and pure absorption profiles were recovered by monitoring of the cavity transmission duri...
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Tunable diode laser absorption spectroscopy using microresonator whispering-gallery modes (WGMs) is demonstrated. WGMs are excited around the circumference of a cylindrical cavity 125 mum in diameter using an adiabatically tapered fiber. The microresonator is very conveniently tuned by stretching, enabling the locking of an individual WGM to the laser. As the laser is scanned in frequency over ...
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We report the design and construction of a cavity enhanced absorption spectrometer using broadband Brewster's angle prism retroreflectors and a spatially coherent 500 nm to >1.75 microm supercontinuum excitation source. Using prisms made from fused silica an effective cavity reflectivity of >99.99% at 1.064 microm was achieved. A proof of principle experiment was performed by recording the cavi...
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ژورنال
عنوان ژورنال: Acta Physica Polonica A
سال: 2009
ISSN: 0587-4246,1898-794X
DOI: 10.12693/aphyspola.116.363