Time-resolved Fourier transform intracavity spectroscopy with a Cr2+:ZnSe laser
Optics Letters, Vol. 30, Issue 24, pp. 3410-3412 (2005)
http://dx.doi.org/10.1364/OL.30.003410
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Abstract
Intracavity laser absorption spectroscopy (ICLAS) with an evacuated Cr2+:ZnSe laser is performed with a high-resolution time-resolved Fourier transform interferometer with a minimum detectable absorption coefficient equal to 4×10−9 cm−1 Hz−1/2 in the 2.5 µm region. This represents the extreme limit currently reached in the infrared by ICLAS with Doppler-limited resolution. The broad gain band of the crystal allows a spectral coverage at most equal to 125 nm, wide enough to see entire vibration bands. Weak CO2 bands observed up to now only in the Venusian atmosphere are recorded for the first time, to our knowledge, in a laboratory. An H2O detection limit down to 0.9 parts per billion by volume is also demonstrated.
© 2005 Optical Society of America
OCIS Codes
(120.6200) Instrumentation, measurement, and metrology : Spectrometers and spectroscopic instrumentation
(140.3070) Lasers and laser optics : Infrared and far-infrared lasers
(140.3580) Lasers and laser optics : Lasers, solid-state
(300.6300) Spectroscopy : Spectroscopy, Fourier transforms
(300.6320) Spectroscopy : Spectroscopy, high-resolution
(300.6390) Spectroscopy : Spectroscopy, molecular
ToC Category:
Spectroscopy
Citation
Nathalie Picqué, Fatou Gueye, Guy Guelachvili, Evgeni Sorokin, and Irina T. Sorokina, "Time-resolved Fourier transform intracavity spectroscopy with a Cr2+:ZnSe laser," Opt. Lett. 30, 3410-3412 (2005)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-30-24-3410
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