Apparatuses and methods for up-converting electromagnetic radiation
First Claim
1. A plasmonic up-converter apparatus, comprising:
- an excitation source operable to emit electromagnetic radiation at an excitation frequency; and
at least one array of nanofeatures configured to produce an emission spectrum responsive to irradiation with the electromagnetic radiation, the emission spectrum having a number of distinct emission peaks, wherein a first emission peak is associated with a fundamental harmonic frequency, a second emission peak is associated with a second harmonic frequency, and a third emission peak is associated with a third harmonic frequency, the fundamental harmonic frequency approximately equal to the excitation frequency and the second and third harmonic frequencies greater than the fundamental harmonic frequency.
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Abstract
As disclosed herein, a plasmonic up-converter apparatus includes an excitation source operable to emit electromagnetic radiation at an excitation frequency and at least one array of nanofeatures. The at least one array of nanofeatures is configured to produce an emission spectrum responsive to irradiation by the electromagnetic radiation. The emission spectrum has an intensity at a second harmonic frequency or a third harmonic frequency approximately equal to an intensity at a fundamental harmonic frequency, with the fundamental harmonic frequency being approximately equal to the excitation frequency. Additional aspects are directed to a display that utilizes any of the disclosed plasmonic up-converter apparatuses, a laser in which a laser medium is optically pumped using electromagnetic radiation produced by one of the disclosed plasmonic up-converter apparatuses, and methods of up-converting electromagnetic radiation.
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Citations
20 Claims
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1. A plasmonic up-converter apparatus, comprising:
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an excitation source operable to emit electromagnetic radiation at an excitation frequency; and at least one array of nanofeatures configured to produce an emission spectrum responsive to irradiation with the electromagnetic radiation, the emission spectrum having a number of distinct emission peaks, wherein a first emission peak is associated with a fundamental harmonic frequency, a second emission peak is associated with a second harmonic frequency, and a third emission peak is associated with a third harmonic frequency, the fundamental harmonic frequency approximately equal to the excitation frequency and the second and third harmonic frequencies greater than the fundamental harmonic frequency. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A display, comprising:
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at least one excitation source operable to emit electromagnetic radiation at an excitation frequency; and a number of pixel elements, each of the pixel elements including at least one array of nanofeatures configured to produce an emission spectrum responsive to irradiation with the electromagnetic radiation, the emission spectrum having a first emission peak at a fundamental harmonic frequency, a second emission peak at a second harmonic frequency, and a third emission peak at a third harmonic frequency, wherein either the intensity associated with the second emission peak or the intensity associated with the third emission peak is approximately equal to the intensity associated with first emission peak, the fundamental harmonic frequency approximately equal to the excitation frequency. - View Dependent Claims (13)
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14. A method of up-converting excitation electromagnetic radiation at an excitation frequency, comprising:
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irradiating at least one array of nanofeatures with the excitation electromagnetic radiation; and emitting electromagnetic radiation from the at least one array responsive to irradiating the at least one array, the electromagnetic radiation having an emission spectrum exhibiting a number of distinct emission peaks, wherein one emission peak is associated with a fundamental harmonic frequency, a second emission peak is associated with second harmonic frequency, and a third emission peak is associated with a third harmonic frequency, the fundamental harmonic frequency approximately equal to the excitation frequency and the second and third harmonic frequencies greater than the fundamental harmonic frequency. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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Specification