Time-domain near-infrared spectroscopy using a wavelength-tunable narrow-linewidth source by spectral compression of ultrashort soliton pulses |
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Authors: | Nishizawa Norihiko Takahashi Koji |
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Institution: | Department of Electrical Engineering and Computer Science, Nagoya University, Nagoya 464-8603, Japan. nishizawa@nuee.nagoya?u.ac.jp |
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Abstract: | Time-domain absorption spectroscopy was demonstrated using a wideband, rapid wavelength-tunable, narrow-linewidth source based on an Er-doped ultrashort pulse fiber laser system. The spectrum of the Raman-shifted ultrashort soliton pulse was compressed using a comb-profile dispersion increasing fiber. Rapid wavelength sweeping was demonstrated using an electro-optical intensity modulator. The absorption spectrum of CH(2)Cl(2) liquid at 1625-1780 nm was observed in a 10 μs time-domain measurement. |
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