Thermometric study of CO2-laser heated optical fibers in excess of 1700 degrees C using fiber Bragg gratings

• The thermal response of optical fibers during CO2 laser irradiation has been characterized by using thermally stable short-period fiber Bragg gratings, referred to as chemical composition gratings. CO2 laser beam profiling was performed by scanning the beam across a 1 mm long grating, providing a spatial resolution given by the fiber diameter. The thermal dynamics during square pulse irradiation has been recorded for temperatures in excess of 1700°C, with heating and cooling rates as high as 10,500°C  s−1 and 6500°C  s−1, respectively.

Ämnesord

NATURVETENSKAP  -- Fysik -- Annan fysik (hsv//swe)

NATURAL SCIENCES  -- Physical Sciences -- Other Physics Topics (hsv//eng)

Nyckelord

Chemical composition gratings

Fiber diameters

Heating and cooling rates

Laser beam profiling

Spatial resolution

Thermal dynamics

Thermal response

Thermally stable

Optiska fibrer Bragg gitter fiber sensor temperatur glas

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