文献类型： 会议论文

第一作者： Michael Scaggs

作者： Michael Scaggs ¹ ; Gil Haas ¹ ;

作者机构： 1.Haas Laser Technologies, Inc. 37 Ironia Road, Flanders, NJ 07836

关键词： laser beam analysis;M-squared;M2;wire grid polarizer;real time analysis;beam waist analyzer

会议名称： SPIE Conference on Laser Resonators, Microresonators, and Beam Control

主办单位：

页码： 86000R-1-86000R-9

摘要： An all passive optical design laser beam waist analyzer has been developed which can analyze in real time a focused beam waist independent upon its polarization state and facilitates a wide dynamic range of neutral density adjustment for optimizing the intensity on the sensor in an extremely compact size. The technique is applicable from the UV to the far infrared and tests in the visible and the far infrared are presented. At the core of the design is a short Fabry-Perot resonator which produces spatial time slices of a focused laser beam and post the resonator is a pair of wire grid polarizers. The Fabry-Perot resonator optics provides a ~ 4.0 optical density for the incoming laser beam. As the intensity of the light following the Fabry-Perot resonator is sufficiently low, a very efficient and compact arrangement of a pair of wire gird polarizers are introduced to provide a wider dynamic range of focus intensity at the sensor plane without the need to add additional neutral density filters. This simple, but unique combination of optics, makes for a very compact and efficient means to evaluate focused laser beams from the ultra violet to the far infrared.

分类号： N-532