Junewen CHEN^* and Jun-Nan CHEN

Institute of Mechanical and Aerospace Engineering, Chung-Hua University, Hsin-Chu 30067, Taiwan

(Received July 6, 2006; Accepted August 14, 2006)

Five types of passive Q-switched as well as simultaneously Q-switch mode-locked modulators: plastic dye sheets (Kodak 9850 cellulose acetate dye sheets), lithium fluoride crystals containing F₂^- color centers (LiF:F₂^-), chromium-doped yttrium–aluminum–garnet crystals (Cr⁴⁺:YAG), ionic color filter glass (Schott RG1000 color filter glass), and the single crystal semiconductor wafers (GaAs, Fe-doped InP, Zn-doped InP, S-doped InP, etc.) used for modulation of the Nd:hosted(Nd:YAG, Nd:YVO₄, and Nd:LSB) lasers were investigated in detail in our research. We also investigated applications of the Q-switch mode-locked pulse train for the development of a higher resolution solid-state laser range finder.

Key words: passive Q-switch modulators, simultaneously Q-switch mode-locked pulses, Nd:hosted lasers

^*E-mail address: jwchen@chu.edu.tw