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All-Fiber Multi-Purpose Gas Cells and Their Applications in Spectroscopy

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3 Author(s)
Marty, P.T. ; Inst. of Appl. Phys., Univ. of Bern, Bern, Switzerland ; Morel, J. ; Feurer, T.

We demonstrate a multi-purpose all-fiber design for gas-filled cavities based on hollow core photonic crystal fibers and on a specially designed fiber connector system. The connector system allows to evacuate and to fill the fiber core with a gaseous medium and keeping it pressure-tight. It also allows connecting the hollow core fiber to standard fibers. We demonstrate the flexibility and functionality by realizing three different all-fiber spectroscopic devices. Firstly, a single pass gas cell for linear absorption spectroscopy, secondly, a double pass gas cell and, thirdly, an all-fiber Fabry-Perot cavity for nonlinear saturation spectroscopy.

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Lightwave Technology, Journal of  (Volume:28 ,  Issue: 8 )