Abstract
Simultaneous and independent lasing on two different atomic lines is achieved with spatial resolution of laser eigenstates in conjunction with intracavity frequency selection. A sensitivity of 0.3 part in 106 meter in the differential detection of methane in 1 atm of air is experimentally demonstrated with this novel dual-wavelength laser. Monitoring the output intensities of the two orthogonally polarized eigenstates permits absolute measurement of methane concentration.
| Original language | English |
|---|---|
| Pages (from-to) | 3261-3264 |
| Number of pages | 4 |
| Journal | Applied Optics |
| Volume | 33 |
| Issue number | 15 |
| DOIs | |
| Publication status | Published - 15 May 1994 |
| Externally published | Yes |
Keywords
- Atmospheric remote sensing
- Dual-wavelength laser
- Methane differential absorption
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