Lutronic Corporation

Huicheol Lee

Haelyung Hwang

Seunghwan Kong

The present invention relates to an apparatus for stabilizing second harmonic wave pulse output in a laser system operating by pulses. The apparatus of the present invention comprises: a pulse laser oscillating unit () which outputs a laser pulse; a nonlinear crystal () which converts the laser pulse of a first wavelength output by the pulse laser oscillation unit () into a second harmonic wave with a value that is half of the first wavelength, and outputs the converted second harmonic wave; and an optical absorption filter () which absorbs a portion of the energy of the converted second harmonic laser pulse from the nonlinear crystal () to output the second harmonic wave with a lower energy. The thus-configured apparatus of the present invention supplies a fundamental wave in a stable state and having a small PTP value and high level energy to the nonlinear crystal, in order to obtain the second harmonic wave which is in a more stable state and has a small PTP value and a variety of energies.

Growing community of inventors

Goyang-si, South Korea

Huicheol Lee