ATOM INTERFEROMETER GYROSCOPE BASED ON SINGLE RAMAN LASER BEAM

摘要

The present invention relates to an atom interferometer gyroscope using a single Raman laser beam capable of minimizing the generation of a phase error. The atom interferometer gyroscope using a single Raman laser beam comprises: a Raman laser generating unit for generating a Raman laser beam; a polarization beam splitter disposed on a path of the Raman laser beam generated by the Raman laser generator; a first quarter wave plate disposed on the path of the Raman laser beam that has passed through the polarized beam splitter and converting the passing Raman laser beam into circular polarized light; an acoustic optical modulator disposed on the path of the Raman laser beam that has passed through the first quarter wave plate to cause diffraction of the incident Raman laser beam; a reflective unit configured to reflect the Raman laser beam that has passed the acoustic optical modulator to be reflected again to the acoustic optical modulator; an optical fiber unit disposed on the path of the Raman laser beam that has sequentially passes through the reflective unit, the acoustic optical modulator, the first quarter waver plate, and the polarization beam splitter and is converted into vertical polarized light and transmitting the incident Raman laser beam; and a Raman laser beam enlarger disposed on the path of the Raman laser that has passed through the optical fiber unit, enlarging the Raman laser beam in a predetermined section according to a path of an atom beam moving in the direction intersecting with the Raman laser beam, and providing an interference region of the Raman laser beam and the atom beam.