Preface

Laser Technology Laboratory has started since 1997. New laser technology has tremendously contributed to the progress of basic science and developed a variety of applications. In recent years, rapid progress of ultrashort, high-intensity laser technology enables us to study the interaction of ultrastrong optical fields with matters. In this laboratory, Novel nonlinear phenomena caused by interaction of ultrashort intense laser pulses with matters are investigated for creation of coherent x-ray sources including x-ray lasers and high-order harmonics. Nonlinear optical phenomena in the soft x-ray region and generation of ultrashort pulses in the region of attosecond seconds are pursued by use of high-order harmonics. In addition, applications of short wavelength and ultrashort laser pulses to material processing are studied.

Research Subjects

1. Ultrashort high intensity lasers

(1) Development of femtosecond high intensity Ti:sapphire lasers

(2) Interaction of ultrashort high intensity pulses with matters

An AFM image of ablation pattern on a gold target produced by the 27th harmonic beam

2. Generation and application of coherent soft x-ray radiation

(1) High energy high-order harmonic generation

(2) Nonlinear optics in the soft x-ray region

(3) Generation and measurement of attosecond pulses