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PubMed · 11676447

Yb fiber laser pumped mid-IR source based on difference frequency generation and its application to ammonia detection.

N Matsuoka·S Yamaguchi·K Nanri·T Fujioka·D Richter·F K Tittel
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Abstract

A Yb fiber laser pumped cw narrow-linewidth tunable mid-IR source based on a difference frequency generation (DFG) in a periodically poled LiNbO3 (PPLN) crystal for trace gas detection was demonstrated. A high power Yb fiber laser and a distributed feedback (DFB) laser diode were used as DFG pump sources. This source generated mid-IR at 3 microns with a powers of ~2.5 microW and a spectral linewidth of less than 30 MHz. A frequency tuning range of 300 GHz (10 cm-1) was obtained by varying the current and temperature of the DFB laser diode. A high-resolution NH3 absorption Doppler-broadened spectrum at 3295.4 cm-1 (3.0345 microns) was obtained at a cell pressure of 27 Pa from which a detection sensitivity of 24 ppm m was estimated.

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AmmoniaEnvironmental MonitoringFiber Optic TechnologyLasersNiobiumNormal DistributionOxidesSpectrophotometry, InfraredYtterbiumNASA Discipline Environmental HealthNon-NASA CenterJournal Article

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N Matsuoka, S Yamaguchi, K Nanri, T Fujioka, D Richter, F K Tittel. 2001. Yb fiber laser pumped mid-IR source based on difference frequency generation and its application to ammonia detection.. https://pubmed.ncbi.nlm.nih.gov/11676447/

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