For those who work in the field of optics, the ability to manipulate the angular momentum of light has been a longstanding goal. This is because the angular momentum of light can be used for a variety of applications, from communications to laser machining. Now, scientists from the University of Bristol have developed a new technique that can precisely control the angular momentum of light with unprecedented accuracy. This technique consists of using a combination of two optical elements to control the angular momentum, giving researchers the ability to engineer the angular momentum of light for a variety of purposes. This breakthrough is a significant step forward in the field of optics, and its implications are exciting and far-reaching.

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source: Phys.org