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Title: Indirect precise angular control using four-wave mixing

Journal Article · · Applied Physics Letters
DOI:https://doi.org/10.1063/1.4875277· OSTI ID:22267734
; ; ;  [1];  [2]
  1. Key Laboratory of Quantum Information, CAS, University of Science and Technology of China, Hefei, Anhui 230026 (China)
  2. Fuzhou University, Fuzhou, Fujian 350108 (China)

Here, we show indirect precise angular control using a four-wave mixing (FWM) process. This was performed with a superposition of light with orbital angular momentum in an M-Type configuration of a hot {sup 85}Rb atomic ensemble. A gear-shaped interference pattern is observed at FWM light with a donut-shaped input signal. The gear could be rotated and is controlled through the change of the polarization of the pump laser. Our experimental results that are based on nonlinear coherent interactions have applications in image processing and precise angular control.

OSTI ID:
22267734
Journal Information:
Applied Physics Letters, Vol. 104, Issue 17; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
Country of Publication:
United States
Language:
English