Method and optical arrangement for the generation of a broadband spectrum
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United States of America Patent
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Issued Date -
Jan 5, 2006
app pub date -
Jun 23, 2005
filing date -
Jun 30, 2004
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Abandoned
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Abstract
The invention is directed to a method and an optical arrangement for the generation of a broadband spectrum in which wavelength regions are selected in an application-oriented manner already during spectrum generation in order to provide increased laser power. A passively mode-coupled solid-state laser provides picosecond laser pulses with an infrared output wavelength which is transformed to a secondary wavelength in the visible spectral range by nonlinear optical processes. The picosecond laser pulses are coupled into a nonlinear optical fiber which is optically adapted to the secondary wavelength with respect to dispersion and nonlinear characteristics, so that a radiation output interval comprising a visible wavelength region is selectively generated. The broadband spectrum has high brilliance and can be used, for example, in spectroscopy, microscopy, cytometry or for array readers.
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