Korea Atomic Energy Research Institute

Jang-Soo Lee

Doo-Byung Yoon

Jin-Ho Park

Soon-Woo Han

To Kang

Provided are an apparatus and a method for measuring a nonlinearity parameter using laser, and more particularly, an apparatus and a method for measuring a nonlinearity parameter using laser for computing the nonlinearity parameter by irradiating laser of a toneburst signal on a surface of a sample by non-contact type laser so as to excite the sample, irradiating measurement laser beam on the surface of the sample so as to receive displacement information occurring on the surface of the sample over time, measuring the displacement in an interferometer principle, and performing a bandpass filtering for the measured signal so as to measure amplitude Aof a component of a fundamental frequency and amplitude Aof a component of a secondary harmonic wave.

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Daejeon, South Korea

Jang-Soo Lee