The application of Raman laser in measuring gravity acceleration

Ning Ru; Li Zhang; Yu Wang; Shangchun Fan

doi:10.1117/12.2073168

3 December 2014 The application of Raman laser in measuring gravity acceleration

Ning Ru, Li Zhang, Yu Wang, Shangchun Fan

Proceedings Volume 9297, International Symposium on Optoelectronic Technology and Application 2014: Laser and Optical Measurement Technology; and Fiber Optic Sensors; 929720 (2014) https://doi.org/10.1117/12.2073168
Event: International Symposium on Optoelectronic Technology and Application 2014, 2014, Beijing, China

Abstract

Atom interferometry gravimeter with stimulated Raman transitions is realized by atom matter wave, it is now widely used in gravity measurements. We are now building a feasible system of cold atom gravimeter, it is based on the atom interferometry technology by coherently manipulating the cold atoms in a fountain with specific Raman lasers, the cold atom wave packet is splitted, combined, and then re-splitted in the process. Then the atomic wave packet will acquire different phase because of the different evolution path. The precise acceleration can be deduced through the precision measurement of atomic interference fringes phase, and this will be a high precision standard of acceleration. At present, the preparation of Raman laser and the precise control of the laser Frequency have been finished, and they have been proved to meet the requirements of the experiment.

Citation Download Citation

Ning Ru, Li Zhang, Yu Wang, and Shangchun Fan "The application of Raman laser in measuring gravity acceleration", Proc. SPIE 9297, International Symposium on Optoelectronic Technology and Application 2014: Laser and Optical Measurement Technology; and Fiber Optic Sensors, 929720 (3 December 2014); https://doi.org/10.1117/12.2073168

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