US Patent 7573926 Multiwavelength quantum dot laser element
Patent 7573926 was granted and assigned to Industrial Technology Research Institute on August, 2009 by the United States Patent and Trademark Office.
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A multiwavelength quantum dot laser element is provided. A perpendicular stack of quantum dot active regions with different light emitting wavelengths is employed, and thickness, material composition, and quantum dot size of each of the quantum dot active regions are modulated, so as to form various laser oscillation conditions. When a current applied to the quantum dot laser element is larger than the start-oscillation current condition, lasers with different wavelengths are simultaneously obtained in each of the quantum dot active regions, thereby achieving the application of the multiwavelength quantum dot laser element.
US Patent 07573926 Multiwavelength quantum dot laser element US Patent 7573926 Multiwavelength quantum dot laser element
US Patent 07573926 Multiwavelength quantum dot laser element
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