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
Famous quotes containing the word optical:
“It is said that a carpenter building a summer hotel here ... declared that one very clear day he picked out a ship coming into Portland Harbor and could distinctly see that its cargo was West Indian rum. A county historian avers that it was probably an optical delusion, the result of looking so often through a glass in common use in those days.”
—For the State of New Hampshire, U.S. public relief program (1935-1943)