Fiber Laser with Liquid Core

Schematic representation of the temperature-controlled supercontinuum generation. (Source: Leibniz-IPHT)

Already last year, scientists of Leibniz-Institute of Photonic Tech­nology – Leibniz IPHT – in Jena provided experi­mental proof of a new dynamic of hybrid solitons– temporally and spectrally stationary light waves resulting from the unique charac­teristics of the carbon­disulfide-filled fiber core. Now they succeeded to control light genera­tion and the propa­gation of the wave packages via tempera­ture and pressure tuning along the optical fiber.

In this way, they realised near and mid-infrared super­continuum light sources with flexibly adjustable spectral band width for appli­cations in medical imaging, measure­ment tech­nology, and spectro­scopy. “Our computer simulations and experi­ments showed that the wave­length of the initial solitons remains constant over the whole tempera­ture range“, explains Mario Chemnitz, scientist at Leibniz-IPHT.

The disper­sive wave packages resulting from soliton fission, indeed exhibit spectral shifts depending on the ambient tempera­ture. A tempera­ture change of only 13 Kelvin allows us to adjust the band width of radiation over several hundred nano­meters. (Source: IPHT)

Reference: M. Chemnitz et al.: Thermodynamic control of soliton dynamics in liquid-core fibers, Optica 5, 695 (2018); DOI: 10.1364/OPTICA.5.000695

Link: Fiber Sensors (M. A. Schmidt), Leibniz Institute of Photonic Technology IPHT, Jena, Germany

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