Abstract:
An apparatus includes a transverse scanning optical system in the path of a first light beam traveling along a first optic axis; a wavefront correction system in the path of a second light beam traveling along a second optic axis, the wavefront correction system including a wavefront correction device having a spatial phase profile on its surface; a beam combiner that receives the first light beam and the second light beam and outputs an interference beam having a beat frequency equal to a difference frequency between the first light beam and second light beam; and a detection system placed relative to a random scattering medium, which is in the path of the interference beam. The detection system detects measurement light produced by the random scattering medium while the interference beam strikes the random scattering medium.
Abstract:
A method, apparatus, and article of manufacture for irradiating a sample with electromagnetic (EM) radiation. A number of passes of EM radiation through a sample are formed and/or selected, wherein the EM radiation in each of the passes comprises (1) input EM radiation incident on the sample, and (2) transmitted EM radiation exiting the sample formed from the input EM radiation that is transmitted through the sample. A phase conjugate of the transmitted EM radiation is used as the input EM radiation in a next pass of the EM radiation. The number of passes results in one or more EM fields of the input EM radiation having at least a threshold transmittance through the sample.
Abstract:
A light microscope for imaging a sample containing one or more fluorescent agents, comprising a source for generating acoustic waves that are focused at a focus in the sample, wherein the acoustic waves frequency shift a frequency of light passing through the focus, thereby creating a frequency shifted light beam; at least one spatial light modulator (SLM) positioned to illuminate the sample with an output beam that is an optical phase conjugate of the frequency shifted light beam, wherein the output beam is a reflection of a first reference beam off one or more pixels of the SLM, and the pixels are for modulating the first reference beam to create the output beam; and a detector positioned to detect fluorescence generated by the output beam exciting the fluorescent agents at the focus in the sample, thereby imaging the sample.