US 9,810,628 B2
System and method for detection of materials using orbital angular momentum signatures
Solyman Ashrafi, Plano, TX (US); and Roger Linquist, Dallas, TX (US)
Assigned to NxGen Partners IP, LLC, Dallas, TX (US)
Filed by NXGEN PARTNERS IP, LLC, Dallas, TX (US)
Filed on Jan. 5, 2017, as Appl. No. 15/398,857.
Application 15/398,857 is a continuation of application No. 14/942,641, filed on Nov. 16, 2015, granted, now 9,575,001.
Application 14/942,641 is a continuation in part of application No. 14/339,836, filed on Jul. 24, 2014, granted, now 9,267,877, issued on Feb. 23, 2016.
Application 14/339,836 is a continuation in part of application No. 14/875,507, filed on Oct. 5, 2015.
Claims priority of provisional application 62/081,846, filed on Nov. 19, 2014.
Prior Publication US 2017/0115220 A1, Apr. 27, 2017
Int. Cl. G01N 21/59 (2006.01); G01N 21/17 (2006.01); G01N 33/483 (2006.01); G01N 33/487 (2006.01); G01N 21/21 (2006.01); A61B 5/145 (2006.01); A61B 5/1455 (2006.01); G01N 24/00 (2006.01)
CPC G01N 21/59 (2013.01) [A61B 5/1455 (2013.01); A61B 5/14532 (2013.01); G01N 21/17 (2013.01); G01N 21/21 (2013.01); G01N 33/483 (2013.01); G01N 33/487 (2013.01); G01N 33/4833 (2013.01); G01N 24/00 (2013.01); G01N 2021/1765 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An apparatus for detecting a presence of a predetermined material within a sample, comprising:
signal generation circuitry for generating a first signal having a first distinct signature including a first eccentricity of a mode intensity, a first shift in a center of the mode intensity and a first rotation of an ellipsoidal intensity output of the mode intensity and applying the first signal to the sample;
a detector for receiving the first signal after the first signal passes through the sample, for detecting a second distinct signature including a second eccentricity of the mode intensity, a second shift in the center of the mode intensity and a second rotation of the ellipsoidal intensity output of the mode intensity and for determining the presence of the predetermined material within the sample based on the detected second distinct signature within the first signal received from the sample, the detector providing an output of an indication of the presence of the predetermined material responsive to the determination.