An optical parametric amplifier, abbreviated OPA, is a laser light source that emits light of variable wavelengths by an optical parametric amplification process.
Read more about Optical Parametric Amplifier: Optical Parametric Generation (OPG), Optical Parametric Amplification (OPA), Noncollinear OPA, Multipass OPA, Relationship To Parametric Amplifiers in Electronics
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“There is an optical illusion about every person we meet.”
—Ralph Waldo Emerson (1803–1882)
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