Remus Albu1, Daniel Elgort1, Khalid shahzad1, Ramon Erkamp1, Shiwei Zhou1, Jean-Luc Robert1
1Philips Research N.A., Briarcliff Manor, NY, United States
A novel hyperpolarization approach is presented that uses a photon beam endowed with orbital angular momentum (OAM) to induce nuclear hyperpolarization in liquids at room temperature. The feasibility of this hyperpolarization method was verified experimentally by irradiating small volumes of 1H and 19F rich liquid samples with a focused OAM beam endowed with OAM charges of 0 to 20. The NMR signal level for light off and OAM=0 conditions were comparable, while the NMR signal level increased with the absolute value of the OAM charge. The nuclear magnetic polarization of the fluid sample inside the focal spot of the OAM beam was estimated to be between ~1.5% and 5%.