Patent ID: 8429761
Filing Date: 2013-04-23
Classification: H01J

Abstract:
1. A system for imaging a sample, the system comprising: a chamber including one or more optical ports; a stage assembly disposed in the chamber and adapted to receive a sample to be imaged; a femtosecond laser source operable to emit an optical pulse along an optical path; a first frequency conversion stage disposed along the optical path and operable to produce a first frequency converted optical pulse; a cathode optically coupled to the first frequency converted optical pulse and operable to emit an electron pulse having a predetermined energy; an electron lens assembly operable to direct the electron pulse to impinge on the sample disposed on the stage assembly; a second frequency conversion stage disposed along the optical path and operable to produce a second frequency converted optical pulse characterized by a photon energy; an optical system operable to receive the second frequency converted optical pulse and direct the second frequency converted optical pulse to impinge on the sample disposed on the stage assembly; a spectral detector operable to capture the electron pulse passing through the sample, wherein the electron pulse passing through the sample has an energy higher than the predetermined energy; a processor coupled to the detector; and an output device coupled to the processor.