Nonlinear crystal under the action of strong laser second nonlinear effect of the frequency to omega after laser through the crystal into a frequency of 2 frequency doubling light of omega, known as the frequency doubling technique, or second harmonic oscillation.Such as the 1064 nm laser through the frequency doubling crystal, into a 532 - nm green light.The CNI provides the frequency doubling crystal using frequency multiplication technology expanded laser wavelengths, can obtain more short wavelength laser.
According to the industrial and scientific research users specific parameters required to provide all kinds of high damage threshold of coating crystal and supporting services.