elementary introduction to subdoppler laser spectroscopy...
TRANSCRIPT
united nationseducational, scientific
and culturalorganization
theiinternational centre for theoretical physics
international atomicenergy agency
SMR 1302- 16
WINTER SCHOOL ON LASER SPECTROSCOPY AND APPLICATIONS
19 February - 2 March 2001
Elementary Introductionto
Subdoppler Laser Spectroscopy
Part I and II
M. INGUSCIOL.E.N.S. - Lab. Europeo di Spettroscopie Non Lineari
Largo Enrico Fermi, 2 - Firenze, Italy
These are preliminary lecture notes, intended only for distribution to participants.
strada costiera, I I - 34014 trieste italy - tel.+39 04022401 I I fax +39 040224163 - [email protected] - www.ictp.trieste.it
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LENS-INFM1 Dip. di Neuroscienze, Univ. Firenze; 2 Dip. di Fisica, Univ. Warsaw;
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23-SEP-1997 11'-24 +39 55 224072 94* S.0S '-SEP-1997 11:24 +39 55 224072 94*:
Why using diode lasers for monitoring gases?
fast response time (ms)
selectivity
• non-intrusiveness
6MVlR0Mrte/JTAL
sensitivity
—^
low energy consumption
^ AT PPM L6V6L
low costIN SITU "
small-size
remote sensing—b
Abdications
-Control of combustion processes
O2, CO, HC1
-Detection of hazardous gases
CO, H2S, CH4i
-Monitoring of exhaust gases
CO, CO2
-Monitoring of e^mission gases in power plants
NH3
Medical Applications
-Non invasive diagnostic of human breath
12CO2,13CO2, NH3, C2H6
Geophysical Applications
-Monitoring of volcanic gases
H2S, H2O, CO2