Continuous-wave 1.55 mu m diode-pumped surface emitting semiconductor laser for broadband multiplex spectroscopy

Université Montpellier 2 Sciences et Techniques, Montpelhièr, Languedoc-Roussillon, France
Optics Letters (Impact Factor: 3.18). 07/2007; 32(11):1387-9. DOI: 10.1364/OL.32.001387
Source: PubMed

ABSTRACT A room-temperature-operating vertical external cavity surface emitting laser is applied around 1550 nm to intracavity laser absorption spectroscopy analyzed by time-resolved Fourier-transform interferometry. At an equivalent path length of 15 km, the high-resolution spectrum of the semiconductor disk laser emission covers 17 nm simultaneously. A noise-equivalent absorption coefficient at 1 s averaging equal to 1.5 x 10(-10) cm(-1)Hz(-1/2) per spectral element is reported for 65 km, the longest path length employed.

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