Patent ID: 11886011
Assignee: KING ABDULLAH UNIVERSITY OF SCIENCE AND TECHNOLOGY
Field: Optics (Instruments)
Classification: CPC G  B | IPC F  G

Claim 18:
19. A method for printing an optical microstructure on an end of an optical fiber for forming a fiber optical tweezers, the method comprising:
printing on the end of the optical fiber, a beam converter including a tapered optical guide configured to transform a gaussian optical beam into a first annular optical beam;
printing on the beam converter, an inverted cone having first and second reflection surfaces, each configured to reflect the first annular optical beam, having a radius R1, so that a resulting second annular optical beam has a radius R2 larger than the radius R1; and
printing on the inverted cone, a prism having a reflection surface configured to reflect the second annular optical beam to form a third converging annular optical beam,
wherein the third converging annular optical beam includes plural single optical beams that intersect at a given crossing point, outside the optical microstructure, and
wherein the plural single optical beams form an optical trapping.