摘要
概述了声光可调谐滤光器 (AOTF)的基本色散原理 ,介绍了以AOTF为色散元件的红外单色系统的组成。对光源准直系统和系统工作距离进行了分析讨论。对DDS的使用以及DDS与DSP之间接口设计进行了介绍。理论和实验表明 ,输出红外光波数与驱动频率成良好线性关系。系统输出红外光波长范围 2 5～ 5 0 μm ,光谱半宽度为
The basic dispersive principle of AOTF (Acousto Optic Tunable Filter) is generally described The configuration of infrared monochromatic system and some problems of design of optical system, such as, collimation of beam and working distance etc , are analyzed The using method of DDS (Direct Digital Synthesis) in RF driver and interface between DDS and DSP are introduced The experiments and theory indicate that wave number is linear with the frequency of driving signal System has a wavelength region of 2 5～5 0μm, spectral half width of 15nm
出处
《光学技术》
CAS
CSCD
2002年第1期36-37,40,共3页
Optical Technique
基金
国家自然科学基金 (699770 1 5)
天津市自然科学基金 (98360 691 1 )
关键词
红外光
单色系统
声光可调谐滤光器
研制
infrared
monochromatic system
AOTF (Acousto Optic Tunable Filter)
