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    • 1. 发明授权
    • Tunable laser source apparatus
    • 可调谐激光源设备
    • US06594289B2
    • 2003-07-15
    • US09741275
    • 2000-12-19
    • Atsushi YamadaShigenori Mattori
    • Atsushi YamadaShigenori Mattori
    • H01S310
    • H01S5/141H01S5/0687H01S5/16H01S5/164
    • A tunable laser source apparatus including an external cavity has a semiconductor laser and a wavelength selector. The semiconductor laser includes a reflection surface, a surface with an anti-reflection film and an active layer. The selector selects from laser light emitted from the laser through the surface with the anti-reflection film and feeding laser light of a desired wavelength back to the laser through the surface with the anti-reflection film. The semiconductor laser has a window region formed between a tip portion of the active layer extending toward the surface with the anti-reflection film and the surface with the anti-reflection film, the window region allowing the laser light of the desired wavelength fed back from the selector to be coupling thereon, while dilating the beam size of a portion of the laser light which is reflected from the surface with the anti-reflection film and reach the tip portion film.
    • 包括外部空腔的可调谐激光源设备具有半导体激光器和波长选择器。 半导体激光器包括反射面,具有防反射膜的表面和有源层。 选择器从激光器通过表面与防反射膜进行激光的选择,并将所需波长的激光通过表面与抗反射膜反射回激光。 半导体激光器具有窗口区域,该窗口区域形成在有效层的顶端部分与抗反射膜之间朝向表面延伸,并且具有防反射膜的表面,窗口区域允许所需波长的激光从 选择器在其上耦合,同时用抗反射膜扩大从表面反射的一部分激光的光束尺寸并到达尖端部分膜。