| Autor: |
Vodopyanov, K. L., Ganikhanov, F., Maffetone, J. P., Zwieback, I., Ruderman, W. |
| Zdroj: |
Optics Letters; June 2000, Vol. 25 Issue: 11 p841-843, 3p |
| Abstrakt: |
A ZnGeP>_2 (ZGP) optical parametric oscillator (OPO) with wide mid-IR tunability has been demonstrated. The singly resonant angle-tuned ZGP OPO was pumped by 100-ns erbium laser pulses at λ =2.93μm and yielded output that was continuously tunable from 3.8 to 12.4 μm (type I phase matching) and from 4 to 10 μm (type II phase matching). An OPO pump threshold was less than 1 mJ in the whole 4–12 μm range of the output, and the quantum conversion efficiency reached 35%. An OPO linewidth was typically a few wave numbers; however, with a single intracavity etalon (uncoated Si plate) in a type II OPO it was narrowed to <0.5cm^-1. We demonstrate the sensitive detection of N_2O gas with the narrow-linewidth OPO. |
| Databáze: |
Supplemental Index |
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