High throughput multiplex spectroscopy

A method for measuring a property of each of a plurality of radiation fluxes where each radiation flux arises from a different one of a plurality of radiation sources, comprising the steps of

• collecting each radiation flux independently of others of the plurality of radiation fluxes;
• providing a spatial modulator common to all of the radiation sources;
• the common spatial modulator having a sequence of configurations, each of which configurations causes the radiation flux to pass along one or more modulated flux paths
• each radiation flux being associated with a respective one of a plurality of separate modulation ports where each radiation flux passes to a respective one of the modulation ports;
• cycling the common spatial modulator past each of the modulation ports so that the sequence of configurations is applied to each modulation port;
• providing a plurality of detectors associated with the radiation fluxes and for each radiation flux measuring an amplitude of the radiation flux along each modulated flux path;
• and analyzing the radiation flux amplitudes associated with each modulation port to provide information about a property of the radiation flux from each of the plurality of radiation sources;
• wherein the sequence of configurations comprises an ordered array of optical elements on a substrate and wherein the array of optical elements has at least three optical elements and at least two optical elements which modulate said radiation flux incident thereon differently.

A method for measuring a property of each of a plurality of radiation fluxes where each radiation flux arises from a different one of a plurality of radiation sources, comprising the steps of

• collecting each radiation flux independently of others of the plurality of radiation fluxes;
• providing a spatial modulator common to all of the radiation sources;
• the common spatial modulator having a sequence of configurations, each of which configurations causes the radiation flux to pass along one or more modulated flux paths;
• each radiation flux being associated with a respective one of a plurality of separate modulation ports where each radiation flux passes to a respective one of the modulation ports;
• cycling the common spatial modulator past each of the modulation ports so that the sequence of configurations is applied to each modulation port;
• providing a plurality of detectors associated with the radiation fluxes and for each radiation flux measuring an amplitude of the radiation flux along each modulated flux path;
• and analyzing the radiation flux amplitudes associated with each modulation port to provide information about a property of the radiation flux from each of the plurality of radiation sources;
• wherein the common spatial modulator is moved relative to the modulation ports so that the sequence of configurations moves past each of the modulation ports in turn;
• wherein the common spatial modulator is arranged around an axis of rotation and wherein the common spatial modulator is stationary and the modulation ports are rotated around the axis.

A method for measuring a property of each of a plurality of radiation fluxes where each radiation flux arises from a different one of a plurality of radiation sources, comprising the steps of collecting each radiation flux independently of others of the plurality of radiation fluxes;

• each independently collected radiation flux from a respective one of the sources being associated with a respective one of a plurality of separate modulation ports where each collected radiation flux is directed to the respective one of the modulation ports;
• providing a spatial modulator common to all of the radiation sources;
• the common spatial modulator having a sequence of configurations where, in each of the sequence of configurations the common spatial modulator acts upon the radiation flux from a respective one of the sources to cause Hadamard modulation of the radiation flux;
• cycling the common spatial modulator such that the common spatial modulator passes each of the modulation ports so that the sequence of configurations is applied to the radiation flux from the respective source associated with each modulation port;
• providing a respective detector associated with each of the radiation fluxes and for each radiation flux measuring an amplitude of the Hadamard modulated radiation flux;
• and analyzing the radiation flux amplitudes associated with each modulation port to provide information about a property of the radiation flux from each of the plurality of radiation sources.