Optical array for generating a broadband spectrum
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United States of America Patent
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Issued Date -
Jun 2, 2005
app pub date -
Nov 8, 2004
filing date -
May 5, 2000
priority date (Note) -
Abandoned
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Abstract
Disclosed is an optical array for generating a broadband spectrum. The aim of the invention is to reduce the technical complexity of said optical array while keeping the source of laser radiation compact and adjusting in a simple manner the wavelength range of the broadband spectrum to the sensitivity range of conventional semiconductor detectors. Said aim is achieved by coupling in an optically adapted manner a passively mode-coupled solid body laser which supplies picosecond impulses having an initial wavelength that lies within the infrared range to a photonic fiber. A radiation performance interval of the broadband spectrum, which is maintained at an essentially steady intensity, is set within a wavelength range of 700 nm to 1000 nm below the initial wavelength by adjusting the dispersion of said photonic fiber to the initial wavelength. The broadband source of radiation is highly brilliant and can be used in white light interferometry (OCT, coherence radar, spectral radar) and in spectroscopy (pump-probe spectroscopy), among others.
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