Portal
First Claim
Patent Images
1. A portal or gateway configured to allow people or items to pass through, wherein the portal or gateway comprises:
- a vertical support;
a chirped laser;
an open optical sample cell; and
a detector for detecting light from the chirped laser that has passed through the open optical sample cell, wherein the open optical sample cell is defined by a mirror at each end, the mirrors being included in the vertical support, so that the open optical sample cell extends along the vertical support.
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Abstract
A portal or gateway that includes a detector comprising a chirped laser; an open optical sample cell and a detector for detecting light from the chirped laser that has passed through the cell. The chirped laser may be a quantum cascade laser.
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Citations
18 Claims
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1. A portal or gateway configured to allow people or items to pass through, wherein the portal or gateway comprises:
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a vertical support; a chirped laser; an open optical sample cell; and a detector for detecting light from the chirped laser that has passed through the open optical sample cell, wherein the open optical sample cell is defined by a mirror at each end, the mirrors being included in the vertical support, so that the open optical sample cell extends along the vertical support. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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Specification