Subcentimeter radiation detection and frequency domain spectroscopy
First Claim
1. A system for investigation of a sample, said system comprising:
- a source arrangement having a source frequency response;
a detector arrangement in a positional relationship with said source arrangement such that said sample is located in relation to the source arrangement and the detector arrangement, and said detector arrangement having a detector frequency response; and
a laser illumination arrangement for generating(i) a source laser energy that is produced by at least two lasers that are offset phase locked with respect to one another and which source laser energy is incident on said source arrangement, based on the source frequency response, in a way which causes the source arrangement to emit subcentimeter radiation, at least a portion of which subcentimeter radiation interacts with said sample and the source laser energy interacts to produce a frequency sweep in the subcentimeter radiation and, thereafter, at least some of said portion of the subcentimeter radiation serves as a sample influenced radiation that is incident on the detector arrangement, based on said positional relationship, and(ii) a detector laser energy that is incident on said detector arrangement and offset phase locked with the source laser energy in a way which produces at least one optical component of the detector laser energy that is offset with respect to a corresponding optical component of the source laser energy so that the detector laser energy and the sample influenced radiation interact, based on said detector frequency response, in a way which at least generates an electrical output signal across the detector arrangement such that the electrical output signal is responsive to the sample influenced radiation including said frequency sweep.
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Accused Products
Abstract
A system, method and detection arrangement for investigation of a sample are described. A laser illumination arrangement generates (i) a source laser energy that is incident on a source to cause emission of subcentimeter radiation, at least a portion of which interacts with the sample to serve as a sample influenced radiation incident on a detector and (ii) a detector laser energy that is incident on the detector to produce an optical component of the detector laser energy offset with respect to a corresponding optical component of the source laser energy so that the collective energy at the detector generates an electrical output signal responsive to the sample influenced radiation. In another aspect, a detection arrangement is used with at least two continuous wave lasers for causing the detector body to respond in a way which produces a frequency down-converted signal from an incident electromagnetic radiation.
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Citations
41 Claims
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1. A system for investigation of a sample, said system comprising:
a source arrangement having a source frequency response; a detector arrangement in a positional relationship with said source arrangement such that said sample is located in relation to the source arrangement and the detector arrangement, and said detector arrangement having a detector frequency response; and a laser illumination arrangement for generating (i) a source laser energy that is produced by at least two lasers that are offset phase locked with respect to one another and which source laser energy is incident on said source arrangement, based on the source frequency response, in a way which causes the source arrangement to emit subcentimeter radiation, at least a portion of which subcentimeter radiation interacts with said sample and the source laser energy interacts to produce a frequency sweep in the subcentimeter radiation and, thereafter, at least some of said portion of the subcentimeter radiation serves as a sample influenced radiation that is incident on the detector arrangement, based on said positional relationship, and (ii) a detector laser energy that is incident on said detector arrangement and offset phase locked with the source laser energy in a way which produces at least one optical component of the detector laser energy that is offset with respect to a corresponding optical component of the source laser energy so that the detector laser energy and the sample influenced radiation interact, based on said detector frequency response, in a way which at least generates an electrical output signal across the detector arrangement such that the electrical output signal is responsive to the sample influenced radiation including said frequency sweep. - 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, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35)
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36. A method for investigation of a sample, said method comprising:
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providing a source arrangement having a source frequency response; placing a detector arrangement in a positional relationship with said source arrangement such that said sample is located in relation to the source arrangement and the detector arrangement, and said detector arrangement having a detector frequency response; and configuring a laser illumination arrangement for generating (i) a source laser energy that is produced by at least two lasers that are offset phase locked with respect to one another and which source laser energy is incident on said source arrangement, based on the source frequency response, in a way which causes the source arrangement to emit subcentimeter radiation, at least a portion of which subcentimeter radiation interacts with said sample and the source laser energy interacts to produce a frequency sweep in the subcentimeter radiation and, thereafter, at least some of said portion of the subcentimeter radiation serves as a sample influenced radiation that is incident on the detector arrangement, based on said positional relationship, and (ii) a detector laser energy that is incident on said detector arrangement and offset phase locked with the source laser energy in a way which produces at least one optical component of the detector laser energy that is offset with respect to a corresponding optical component of the source laser energy so that the detector laser energy and the sample influenced radiation interact, based on said detector frequency response, in a way which at least generates an electrical output signal across the detector arrangement such that the electrical output signal is responsive to the sample influenced radiation including said frequency sweep.
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37. An apparatus for detecting a subcentimeter radiation, said apparatus comprising:
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a detector having a detector arrangement with a detector frequency response having said subcentimeter radiation incident on the detector arrangement; and an illumination arrangement for continuously illuminating the detector arrangement with laser radiation that is produced by at least two continuous wave lasers that are offset phase locked with respect to one another and at least one of which lasers provides a light output that includes a frequency sweep for causing the detector arrangement to respond, based on said detector frequency response and said frequency sweep, in a way which causes the laser radiation to interact with the subcentimeter radiation to produce a frequency down-converted signal from the subcentimeter radiation. - View Dependent Claims (38, 39, 40)
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41. A method for detecting a subcentimeter radiation, said method comprising:
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providing a detector with a detector frequency response having said subcentimeter radiation incident on the detector; and configuring an illumination arrangement for continuously illuminating the detector arrangement with laser radiation that is produced by at least two continuous wave lasers that are offset phase locked with respect to one another and at least one of which lasers provides a light output that includes a frequency sweep for causing the detector arrangement to respond, based on said given frequency response and said frequency sweep, in a way which causes the laser radiation to interact with the subcentimeter radiation to produce a frequency down-converted signal from the subcentimeter radiation.
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Specification