Microfabrication technology with high processing accuracy and high efficiency is required to produce the microstructure. Therefore, we focused on PNJ, that its characteristics are the short beam diameter and long focal length. To do microfabrication of the desired scale with higher precision and efficiency, a processing method with high processing resolution and controllable PNJ beam diameter is required. For the process method, this study focused on the optical Kerr effect which is one of the non-linear optical phenomena. The optical Kerr effect is a phenomenon in which the refractive index in a nonlinear optical medium change depending on the light intensity of the incident beam. This phenomenon can be used to change the PNJ beam diameter and intensity distribution of PNJ. Therefore, we investigate the control of PNJ intensity distribution based on nonlinear optical phenomena in PNJ processing. This report shows the measurement of nonlinear refractive index of fused silica and the relationship between incident light intensity to microsphere and process diameter in PNJ processing.
YAMASAKI et al. (Wed,) studied this question.