Electromagnetic radiation enhancement methods and systems
First Claim
1. An optical system for producing electromagnetic radiation with localized increases in irradiance or radiance at the system output based on diffraction of said radiation by spatially localized amplitude and phase structures within at least two non-conjugate spatial locations, comprising:
- a first optical mask containing localized regions for producing controlled, localized modifications of phase delays and/or amplitude attenuations of a fraction of the electromagnetic radiation and located within said first non-conjugate spatial location of the optical system;
at least a single optical element with positive optical power located after said first spatial location;
at least one additional optical mask located after said optical element at non-conjugate location placed within the far field region with respect to location of the said first mask and containing localized regions for producing controlled localized modifications of a fraction of the electromagnetic radiation; and
a system output where said high output intensity peaks of electromagnetic radiation are produced.
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Abstract
An optical system for producing electromagnetic radiation with localized increases in irradiance or radiance at the system output includes a first optical mask containing localized regions for producing controlled modifications of phase delays and/or amplitude attenuations and located within the input plane of said optical system. The system also includes at least a single optical component with positive optical power located after the input plane and at least one additional optical mask located after the optical component at non-conjugate locations with respect to the input plane of the system. The additional optical mask contains localized regions for producing controlled modifications of phase delays. Locally increased radiation distributions are produced at the system output.
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Citations
25 Claims
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1. An optical system for producing electromagnetic radiation with localized increases in irradiance or radiance at the system output based on diffraction of said radiation by spatially localized amplitude and phase structures within at least two non-conjugate spatial locations, comprising:
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a first optical mask containing localized regions for producing controlled, localized modifications of phase delays and/or amplitude attenuations of a fraction of the electromagnetic radiation and located within said first non-conjugate spatial location of the optical system; at least a single optical element with positive optical power located after said first spatial location; at least one additional optical mask located after said optical element at non-conjugate location placed within the far field region with respect to location of the said first mask and containing localized regions for producing controlled localized modifications of a fraction of the electromagnetic radiation; and a system output where said high output intensity peaks of electromagnetic radiation are produced. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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Specification