Patent ID: 7656538

Claim:
A tomograph comprising: (a) a femtosecond laser configured to produce a coherent ultra-intense light pulse; (b) a beam-splitter configured to split the coherent ultra-intense light pulse into a first split pulse and a second split pulse, wherein the beam splitter is also configured to vary a delay between the first split pulse and the second split pulse; (c) a focusing device configured to focus the first split pulse and the second split pulse on a high harmonic generator that converts the first split pulse and the second split pulse into a first beam and a second beam, respectively, wherein each beam is coherent, ultra-broadband, and short-wavelength; (d) a sample holder configured to hold an object or a subject in a path of the first beam to generate a first reflected beam; (e) a first reflecting device configured to reflect the second beam to produce a second reflected beam; (f) a detector in operational relation the sample holder and the reflecting device, configured to measure interference between the first reflected beam and the second reflected beam; and (g) a processor configured to convert the measured interference into a three dimensional data set having a spatial resolution along each orthogonal axis, independently less than 500 nm.