Laser Physics Letters · 2006 · 10 citations · 5 references
Natural SciencesChemistryPhysicsOpticsOptoelectronicsSpectroscopyCarbon MonoxideLaser OpticsLaser PhysicsLaser SpectroscopyNonlinear OpticsOptical SpectroscopyCarbon Dioxide DetectionCarbon Monoxide DetectionCarbon Monoxide DetectorsCarbon Monoxide MeasurementHarmonic GenerationNonlinear Optical CrystalsSecond-harmonic GenerationSensitivity
The technique of Second-Harmonic Generation (SHG) of CO 2 laser for carbon monoxide concentration detection is investigated in this paper. A simple mechanical Q-switched CO 2 laser is used in our experiment, which works at 9.586 μm. The nonlinear optical crystal used for frequency doubling is ZnGeP 2 . Different CO concentration detections are performed and 100ppm detectable sensitivity is obtained.
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Temperature-tunable second-harmonic generation in zinc germanium diphosphide
G. C. Bhar, S. Jerome Das, U. Chatterjee et al. · Applied Physics Letters · 1989 · 30 citations · Full text