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Proceedings Paper

All-solid-state sub-40-fs self-starting Cr4+:forsterite laser with holey-fiber beam delivery and chirp control for coherence-domain and nonlinear-optical biomedical applications
Author(s): A. A. Ivanov; Michael V. Alfimov; Andrei B. Fedotov; A. A. Podshivalov; Dusan Chorvat; Alexei M. Zheltikov
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Paper Abstract

An all-solid-state sub-40-fs self-starting Cr4+:forsterite laser with a wavelength tunable within the range of 1.21-1.29 micrometers adapted in its power, temporal, and spectral parameters for high-resolution optical coherence tomography (OCT) and nonlinear optical tissue imaging is presented. Stable self-starting mode locking in the created laser is achieved both with and without semiconductor saturable-absorber mirrors, while the double-pulse regime of lasing permits time-resolved measurements on biological systems to be performed. Frequency doubling is implemented through second harmonic generation in a 2.5-mm-long DCDA crystal, ensuring group velocity matching for femtosecond pulses produced by the Cr:forsterite laser. A set of holey fibers with a period of the photonic crystal structure of the cladding ranging from 468 nm to 32 micrometers ensure the tunability of the photonic band gap of the cladding within a broad spectral range, providing different waveguiding regimes for Cr4+:forsterite laser radiation.

Paper Details

Date Published: 4 May 2001
PDF: 8 pages
Proc. SPIE 4241, Saratov Fall Meeting 2000: Optical Technologies in Biophysics and Medicine II, (4 May 2001); doi: 10.1117/12.431561
Show Author Affiliations
A. A. Ivanov, Ctr. of Photochemistry (Russia)
Michael V. Alfimov, Ctr. of Photochemistry (Russia)
Andrei B. Fedotov, M.V. Lomonosov Moscow State Univ. (Russia)
A. A. Podshivalov, M.V. Lomonosov Moscow State Univ. (Russia)
Dusan Chorvat, International Laser Ctr. (Slovak Republic)
Alexei M. Zheltikov, M.V. Lomonosov Moscow State Univ. (Russia)


Published in SPIE Proceedings Vol. 4241:
Saratov Fall Meeting 2000: Optical Technologies in Biophysics and Medicine II
Valery V. Tuchin, Editor(s)

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