coherent light

noun

1. light in which the electromagnetic waves maintain a fixed and predictable phase relationship with each other over a period of time.

Example Sentences

His work centers on miniaturizing mode-lock lasers -- a unique laser that emits a train of ultrashort, coherent light pulses in femtosecond intervals, which is an astonishing quadrillionth of a second.

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When God said, ‘Let there be light,’ he surely must have meant perfectly coherent light.

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The Dalian Coherent Light Source, whose completion was announced today in Beijing, has a twist that makes it unique: It is the only large laser light source in the world dedicated to the particular range of short-wavelength light called vacuum ultraviolet, which makes it “a new tool for the detection and analysis of molecules undergoing chemical reactions,” says Alec Wodtke, a physical chemist at the University of Göttingen in Germany.

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It produces coherent light — light of the same wavelength and in phase; no converging is involved.

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“We’re able to do this with coherent light,” Nye explains.

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