SEMICONDUCTOR-LASER EXCITING SOLID LASER DEVICE

PROBLEM TO BE SOLVED: To minimize a power required for the driving current and temperature control of a semiconductor laser. SOLUTION: In a semiconductor-laser exciting solid laser device (100), a solid-laser medium (3) is excited by laser beams from the semiconductor laser (1), and fundamental waves of approximately 1064 nm are oscillated by an optical resonator (6) containing the solid-laser medium (3). In the semiconductor-laser exciting solid laser device (100), the fundamental waves are wavelength-converted into second higher harmonics of approximately 532 nm by a non-linear optical crystal (4), and green linear beams are emitted. In the semiconductor-laser exciting solid laser device (100), both a longitudinal mode and a transverse mode use the semiconductor laser (1) in a single mode. Since the semiconductor laser in the single mode both in the longitudinal mode and the transverse mode has a low oscillating threshold value and a high electro-optical conversion efficiency, a driving current can be minimized. The heat generation of the semiconductor laser is reduced because of the high electro-optical conversion efficiency, and the power required for the temperature control can be minimized. Accordingly, a portable use by driving a dry cell is enabled. COPYRIGHT: (C)2007,JPO&INPIT