elementary introduction to subdoppler laser spectroscopy...

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 - scLinfo@ictp.trieste.it - www.ictp.trieste.it

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C. Corsi1, S. Czhudzynsky2, F. D'Amato3, M. De Rosa4, K. Ernst2

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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