Abstract
Concentration modulation is demonstrated to be a technique capable of markedly extending sensitivity limits in absorption spectroscopy. The gain generated relates in such a manner to sample transmittance that for the first reported time direct spectroscopic concentration measurements become possible. When concentration modulation is used with picosecond lasers, state lifetimes can be determined to a limit of ~20 psec.
Original language | English |
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Pages (from-to) | 327-329 |
Number of pages | 3 |
Journal | Optics Letters |
Volume | 10 |
Issue number | 7 |
DOIs | |
Publication status | Published - 1 Jan 1985 |
Externally published | Yes |