摘要
针对激光的快速智能扫描,综合利用晶体的双折射效应和电光效应,提出一种电控集成8行任意扫瞄的高速光扫描方案。主要由三级数字电光偏转器和8×1的周期性极化电光棱镜组构成,其中3个电光快门和3块双折射晶体构成三级数字偏转器,通过半波电压的控制实现行位置的转换,一定数目的周期性极化电光棱镜级联组成单行偏转器,通过控制电压进行单行扫描,根据电场施加方式可实现数字型或者连续型扫描。利用梯形结构的电光棱镜组设计了最大电压为5.822 kV时,扫描视场为17.256°的可通过联机控制进行任意行扫描的高速激光扫描器。
Based on intelligent laser scanning,birefringence effect and electro-optic effect,a scanner for arbitrary scanning in 8 rows is proposed.It mainly consists of a three-order electro-optic deflector and a 8×1 cascade electro-optic prism group.The three-order electro-optic deflector is composed of three electro-optic shutters and three birefringent crystal plates.The laser beams are switched between rows by controlling half-wave voltage of crystal.The prism group with cascade prisms of optic-axis reciprocatingly scans rows by applied electrical field.Digital or continuous scanning were realized by changing the properties of the applied electrical field.A laser scanner with 17.256° scanning area and 5.822KV maximal voltage was designed by using the cascade electro-optic deflector of trapezium structure.It scans arbitrarily in 8 rows using on-line operation.
出处
《应用光学》
CAS
CSCD
北大核心
2011年第2期323-328,共6页
Journal of Applied Optics
基金
国家自然科学基金(10964001)
关键词
电光效应
双折射效应
电光偏转
电光扫描器
electro-optic effect
birefringence effect
electro-optic deflecting
electro-optic laser scanner
