公开(公告)号：US5317576A

公开(公告)日：1994-05-31

申请号：US13117

申请日：1993-02-01

申请人： Frederick Leonberger ,  William H. Glenn ,  Gary A. Ball

发明人： Frederick Leonberger ,  William H. Glenn ,  Gary A. Ball

IPC分类号： H01S3/067 ,  H01S3/07 ,  H01S3/08 ,  H01S3/094 ,  H01S3/0941 ,  H01S3/23 ,  H01S3/30

CPC分类号： H01S3/067 ,  H01S3/0675 ,  H01S3/09415 ,  H01S3/06737 ,  H01S3/07 ,  H01S3/08031 ,  H01S3/08086 ,  H01S3/094007 ,  H01S3/094019 ,  H01S3/094038 ,  H01S3/23 ,  H01S3/2383

摘要： A tunable optical waveguide laser arrangement includes a solid optical waveguide capable of guiding light along an axis between axially spaced ends thereof and being at least in part of an excitable material that emits light in response to stimulation by light. Stimulating light is launched into the waveguide for axial propagation therein and attendant emission of light by the excitable material. Two end reflectors are situated in the waveguide, each at one of the axially spaced ends thereof and extending normal to the axis to delimit a laser cavity. Each of the reflectors is constituted by a Bragg grating consisting of a multitude of axially consecutive grating elements constituted by periodic refractive index perturbations with a given periodicity. The length of the cavity, the peak reflectivity of the Bragg gratings and the gain of the excitable material are so coordinated with one another as to enable lasing in only a single longitudinal mode. The length of that portion of the optical waveguide that incorporates the two Bragg gratings and an intervening region of the optical waveguide is uniformly controlledly varied with attendant continuous tuning of the laser output wavelength without longitudinal mode hopping.

摘要翻译： 可调谐光波导激光器布置包括固体光波导，其能够沿着轴的轴向间隔开的端部引导光，并且至少部分地是响应于光的刺激而发光的可激发材料。 刺激光被发射到波导中以在其中轴向传播并伴随着可兴奋材料的光发射。 两个端部反射器位于波导中，每个在其轴向间隔开的一个端部处并且垂直于轴线延伸以限定激光腔。 每个反射器由布拉格光栅构成，布拉格光栅由具有给定周期的周期性折射率扰动构成的多个轴向连续的光栅元件组成。 腔的长度，布拉格光栅的峰值反射率和可激发材料的增益彼此协调，以使得仅在单个纵向模式下实现激光。 结合两个布拉格光栅的光波导的该部分的长度和光波导的中间区域的均匀控制地随着激光输出波长的连续调谐而不进行纵向模式跳变。