摘要
SDL-5400型号GaAlAs LD激光器产生的是单模高斯光束,在相互垂直方向上光束发散角不相等,且存在像散。为得到共腰的圆形光斑,由复参数q和ABCD定律,设计出两相互垂直的柱面透镜和棱镜对准直整形模块,通过CCD标定方法,得到经准直整形后的LD激光束在弧矢方向上的远场发散角为0.53 mrad,子午方向为0.64 mrad。
The divergence angles of the single-mode Gauss beam generated by GaAlAs SDL： 5400 LD laser in the perpendicular directions are not equal, and there is astigmatism in the beam. In order to obtain the circular light spot with common beam waist, a collimating and shaping module with two semi-cylinder perpendicular lenses and a pair of prisms was designed according to the complex parameterand ABCD-law. The far-field divergence angle of the collimated and shaped LD laser beam, which was calibrated with CCD, was 0. 53 mrad in the sagittal direction and 0. 64 mrad in the meridional direction.
出处
《应用光学》
CAS
CSCD
2008年第3期412-417,共6页
Journal of Applied Optics
基金
国家863-701项目
关键词
远场发散角
准直整形
CCD标定
测量精度
far-field divergence angle
collimation and shaping
calibration with CCD
measurement accuracy
