Abstract:
Spectral superbroadening of subnanojoule femtosecond Cr:forsterite laser pulses is demonstrated for the first time in experiments with a tapered fiber. Coupling 40-fs 0.6-nJ pulses of 1.25-μm Cr:forsterite laser radiation into a tapered fiber with a taper waist diameter of about 2μm and a taper waist length of 90 mm, we observed the spectra spanning more than two octaves at the output of the fiber. These experimental results open new horizons for the creation of compact femtosecond systems based on Cr:forsterite lasers and tapered fibers for optical metrology and biomedical applications.
Citation:
D. A. Akimov, M. V. Alfimov, S. N. Bagayev, T. A. Birks, A. A. Ivanov, A. B. Fedotov, W. J. Wadsworth, P. S. Russell, V. S. Pivtsov, A. A. Podshivalov, A. M. Zheltikov, “Spectral superbroadening of subnanojoule Cr:Forsterite femtosecond laser pulses in a tapered fiber”, Pis'ma v Zh. Èksper. Teoret. Fiz., 74:9 (2001), 515–519; JETP Letters, 74:9 (2001), 460–463
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