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Title: Indirect precise angular control using four-wave mixing

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.
Authors:
; ; ;  [1] ;  [2] ;  [3]
  1. Key Laboratory of Quantum Information, CAS, University of Science and Technology of China, Hefei, Anhui 230026 (China)
  2. (China)
  3. Fuzhou University, Fuzhou, Fujian 350108 (China)
Publication Date:
OSTI Identifier:
22267734
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 104; Journal Issue: 17; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; FREQUENCY MIXING; IMAGE PROCESSING; LASERS; NONLINEAR PROBLEMS; ORBITAL ANGULAR MOMENTUM; RUBIDIUM 85