Patent ID: 8508222

Claim:
A method of analyzing a sample including molecules based upon nuclear magnetic resonance spectroscopy, the method comprising the acts of: providing a light by turning on a light source; introducing orbital angular momentum into the light; obtaining a focused light beam carrying the orbital angular momentum; sequentially illuminating the sample to provide a light pulse for sequential illumination of the sample with the focused light beam carrying the orbital angular momentum for obtaining nuclear magnetic polarization of the sample for aligning the molecules in a propagation direction of the focused light beam when the sample is illuminated by the focused light beam; generating a sequence of magnetic fields by a coil arranged around the sample including a magnetic field having a direction which is perpendicular to the propagation direction of the focused light beam, wherein the coil is configured to generate the magnetic field when the sample is not illuminated by the focused light beam for aligning the molecules in the direction of the magnetic field; and obtaining a free induction decay signal resulting from the sequential illumination of the sample, the free induction decay signal carrying characteristics of the sample.