Development of laser technology - Development of the wavelength tuning and the output stabilization technology-

Several new technologies for expansion of wavelength tunability and stabilization of laser system are developed. A self-seeded Ti:Sapphire laser system is developed in a dual cavity configuration to get a broad tunability in Near-IR region. For the continuous tunability in the visible region, mixing of dye solutions is demonstrated and this mixing provided the frequencies which is impossible in most of visible dye solutions. In addition an optical parametric oscillator (OPO) system, which adopted a BBO nonlinear crystal for the frequency tuning, is developed. This OPO system showed a bright future in solid state tunable laser technology. For the extension of tunability in UV region, a Raman shifter is developed. The frequency stability is achieved by using optogalvanic cell in a reference cavity, and 3% of stabilization is accomplished. 58 figs, 2 pix, 16 refs. (Author)