Method and device for superresolution optical measurement using singular optics
An optical method of measurement and an optical apparatus for determining the spatial position of at least one luminous object on a sample. A sequence of at least two compact luminous distributions of different topological families is projected onto the sample, and light re-emitted by the luminous object is detected. At least one optical image is generated for each luminous distribution on the basis of the light detected. The optical images are analyzed to obtain spatiotemporal information regarding the light re-emitted by the luminous object, or location of the luminous object.
1. A method of optical measurement for determining a spatial position of at least one luminous object in a sample, the method comprising:
projecting onto the sample a first set of sequences, the first set having at least two members, of first and second compact luminous distributions, wherein the first and second compact luminous distributions are of distinct topological families and the sequences in the first set differ from one another by an attribute selected from the group consisting of projection axis, wavelength, and combinations thereof;
projecting a second set of sequences, the second set having at least two members, of compact light distributions relative to a hypothesized position of the at least one luminous object, each compact light distribution characterized by a center, in such a manner that there is substantially zero intensity at the center of each compact light distribution and the sequences in the second set differ from one another by an attribute separately selected from the group consisting of projection axis, wavelength, and combinations thereof;
detecting light re-emitted by the at least one object in the sample; and
obtaining spatiotemporal information with respect to the light reemitted by the at least one luminous object on a basis selected from the group consisting of directly detecting a plurality of images, algorithmically analyzing the plurality of images, and combinations thereof.
2. A method according to claim 1 , wherein each of the first and second sets of sequences includes first and second compact distributions that are partially coherent.
3. A method according to claim 1 , wherein the sequences in the second set differ from one another with respect to projection axis.
4. A method according to claim 1 , wherein the first and second compact luminous distributions in the first set of sequences occupy different spatial positions.
5. A method according to claim 4 , wherein the spatial position occupied by the second compact luminous distribution is dynamically controlled so as to follow at least one specific target.
6. A method according to claim 5 , wherein the second compact luminous distribution is dynamically controlled in a high precision manner using a system selected from the group consisting of controllable mirrors, electro-optical device, acousto-optical devices, piezoelectric actuators, and combinations thereof.
7. A method according to claim 1 , wherein the first and second compact luminous distributions in the first set of sequences occupy different longitudinal positions.
8. A method according to claim 1 , wherein the first and second compact luminous distributions in a member, selected from the group consisting of the first and second sets of sequences, have different polarizations.
9. A method according to claim 1 , wherein the first and second compact luminous distributions in the first set of sequences are created by different modes of a multimode laser.