White light source based on nonlinear-optical processes
First Claim
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1. A white light source, comprising:
- a light emission device for emitting a radiation beam with at least one radiation frequency in one of a red spectral region and an infrared spectral region;
a nonlinear-optical element disposed downstream of said light emission device and into said nonlinear-optical element the radiation beam is coupled and converted into a frequency-mixed radiation beam at least partially by generation of at least one mixed frequency by at least one of frequency mixing, frequency doubling, summation frequency formation, and difference frequency formation; and
a conversion element disposed downstream of said nonlinear-optical element and into said conversion element the frequency-mixed radiation beam is coupled and converted at least partially into light radiation of one of longer wavelengths and shorter wavelengths in such a way that an emission spectrum of the radiation beam radiated by said conversion element has mutually complementarily colored spectral regions.
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Abstract
A white light source has a light emission device, in particular an IR laser diode, whose emitted radiation beam is converted, in a nonlinear-optical element and a conversion element, into a radiation beam with wavelengths λ1, . . . λn which can be perceived as white light and can have a higher power rating.
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Citations
30 Claims
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1. A white light source, comprising:
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a light emission device for emitting a radiation beam with at least one radiation frequency in one of a red spectral region and an infrared spectral region;
a nonlinear-optical element disposed downstream of said light emission device and into said nonlinear-optical element the radiation beam is coupled and converted into a frequency-mixed radiation beam at least partially by generation of at least one mixed frequency by at least one of frequency mixing, frequency doubling, summation frequency formation, and difference frequency formation; and
a conversion element disposed downstream of said nonlinear-optical element and into said conversion element the frequency-mixed radiation beam is coupled and converted at least partially into light radiation of one of longer wavelengths and shorter wavelengths in such a way that an emission spectrum of the radiation beam radiated by said conversion element has mutually complementarily colored spectral regions. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30)
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16. A white light source, comprising:
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a light emission device for emitting a radiation beam with at least one radiation frequency in one of a red spectral region and an infrared spectral region;
a nonlinear-optical element disposed downstream of said light emission device and into said nonlinear-optical element the radiation beam is coupled and converted into a frequency-mixed radiation beam at least partially by generation of at least one mixed frequency by at least one of frequency mixing, frequency doubling, summation frequency formation, and difference frequency formation; and
a conversion element disposed downstream of said nonlinear-optical element and into said conversion element the frequency-mixed radiation beam is coupled and converted at least partially into light radiation of one of longer wavelengths and shorter wavelengths in such a way that an emission spectrum of the radiation beam radiated by said conversion element has spectral components in a red, green and blue spectral region.
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Specification