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21 April 2017 High-power mid-infrared fiber-based supercontinuum sources (Conference Presentation)
Stefan Kedenburg, Tobias R. J. Steinle, Andy Steinmann, Harald Giessen
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Proceedings Volume 10088, Nonlinear Frequency Generation and Conversion: Materials and Devices XVI; 100880F (2017) https://doi.org/10.1117/12.2255954
Event: SPIE LASE, 2017, San Francisco, California, United States
Abstract
We present mid-infrared supercontinuum sources based on chalcogenide, tellurite, and liquid-filled capillary fibers and sub-picosecond oscillator pumping. Depending on the fiber geometry and material, the experimentally achieved spectral bandwidths and output powers vary significantly. In As2S3 chalcogenide step-index fibers we achieve a maximum output power of 550 mW at a spectral width of 2 μm, covering the important transparent atmospheric window between 3 and 5 μm. In tellurite step-index fibers we attain an ultra-broadband spectrum ranging from 1.3 to 5.3 μm with an average power of 150 mW. The spectral behavior of the supercontinua is investigated by changing the pump wavelength, core diameter, fiber length, and pump power. As pump source we use high repetition rate (42 MHz) optical parametric oscillators/amplifiers which deliver Watt-level pulses tunable between 1.4 – 4.1 μm. These supercontinuum sources promise to be excellent laboratory tools for high resolution spectroscopy owing to their high brilliance and near TEM00 spatial beam profiles.
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Stefan Kedenburg, Tobias R. J. Steinle, Andy Steinmann, and Harald Giessen "High-power mid-infrared fiber-based supercontinuum sources (Conference Presentation)", Proc. SPIE 10088, Nonlinear Frequency Generation and Conversion: Materials and Devices XVI, 100880F (21 April 2017); https://doi.org/10.1117/12.2255954
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KEYWORDS
Supercontinuum sources
Mid-IR
Optical fibers
Chalcogenides
Step index fibers
Capillaries
Oscillators
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