AI Article Synopsis
- The method introduced sorts optical states characterized by their orbital angular momentum (OAM) using two stationary optical components.
- These components transform the original light beam's helical phase into a format suitable for spatial separation, creating a transverse phase gradient.
- An experimental demonstration utilized spatial light modulators to successfully isolate eleven different OAM states by focusing each to distinct lateral positions.
Article Abstract
We present a method to efficiently sort orbital angular momentum (OAM) states of light using two static optical elements. The optical elements perform a Cartesian to log-polar coordinate transformation, converting the helically phased light beam corresponding to OAM states into a beam with a transverse phase gradient. A subsequent lens then focuses each input OAM state to a different lateral position. We demonstrate the concept experimentally by using two spatial light modulators to create the desired optical elements, applying it to the separation of eleven OAM states.
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| http://dx.doi.org/10.1103/PhysRevLett.105.153601 | DOI Listing |
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