| 摘要 |
PURPOSE:To perform a stable oscillation with sufficient light output in practice by setting the reflectivity of two resonator ends to 0.45 or higher and 0.80 or lower. CONSTITUTION:The reflectivity of a light in an oscillating wavelength of its laser at two resonator ends are set to 0.45 or higher and 0.80 or lower. Since the reflectivity of the oscillating length of the resonator end of a semiconductor laser is sufficiently higher by approx. 0.3 of the case of the cleavage surface of the semiconductor crystal of laser medium in such a structure, the ratio of the returning light of the light itself into the resonator is decreased. Further, since the reflectivity of the resonator end is sufficiently high, the light energy stored therein is high, and the influence by the light incident from the exterior is less, thereby obtaining stable oscillated state. |
