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QUARTZ TUNING FORK The small QCL has only become available in recent years, Tittel says, and is far better able to detect trace amounts of gas than lasers used in the past.
What makes the technique possible is the small quartz tuning fork, which vibrates at a specific frequency
The laser beam is focused between the two prongs of the quartz tuning fork. When light at a specific wavelength is absorbed by the gas of interest
and that excites the quartz tuning fork. he tuning fork is a piezoelectric element, so when the wave causes it to vibrate,
QUARTZ TUNING FORK The small QCL has only become available in recent years, Tittel says, and is far better able to detect trace amounts of gas than lasers used in the past.
What makes the technique possible is the small quartz tuning fork, which vibrates at a specific frequency
The laser beam is focused between the two prongs of the quartz tuning fork. When light at a specific wavelength is absorbed by the gas of interest
and that excites the quartz tuning fork. he tuning fork is a piezoelectric element, so when the wave causes it to vibrate,
The technique called quartz-enhanced photoacoustic absorption spectroscopy (QEPAS invented at Rice by Tittel, Professor Robert Curl and their collaborators in 2002,
What makes the technique possible is the small quartz tuning fork, which vibrates at a specific frequency when stimulated."
"The laser beam is focused between the two prongs of the quartz tuning fork. When light at a specific wavelength is absorbed by the gas of interest,
and that excites the quartz tuning fork.""The tuning fork is a piezoelectric element, so when the wave causes it to vibrate,
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