Abstract

A room-temperature-operating vertical external cavity surface emitting laser is applied around 1550nm to intracavity laser absorption spectroscopy analyzed by time-resolved Fourier-transform interferometry. At an equivalent path length of 15km, the high-resolution spectrum of the semiconductor disk laser emission covers 17nm simultaneously. A noise-equivalent absorption coefficient at 1s averaging equal to 1.5×1010cm1Hz12 per spectral element is reported for 65km, the longest path length employed.

© 2007 Optical Society of America

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