光学与光电技术, 2014, 12 (5): 8, 网络出版: 2015-01-08
基于STC单片机F-P扫描干涉仪的设计
Study of F-P Scanning Interferometer Based on STC Single-Chip Microcomputer
摘要
通过分析F-P扫描干涉仪的工作原理,基于STC89C52RC单片机,采用PA93功率放大器驱动压电陶瓷,设计了1 064 nm平平腔结构的F-P扫描干涉仪。腔镜反射率为98%,精细度156,腔长0.1~100 mm连续可调,对应自由光谱区1.5~1 500 GHz和分辨率9.65~9 650 MHz。压电陶瓷驱动电压和频率通过4×4矩阵键盘,可以在0~200 V和1~30 Hz连续可调,显示在1 602液晶屏上。同时可以通过RS232串口与计算机通讯,在上位机使用LabVIEW软件界面方便地设置压电陶瓷驱动电压和频率。最后使用该F-P扫描干涉仪,对激光二极管泵浦Nd: YVO4激光器纵模进行了测量,验证了整个系统的工作性能。
Abstract
A planar-planar 1064 nm F-P scanning interferometer is designed based on STC89C52RC single-chip microcomputer. Its principle is analyzed using MATLAB software. PA93 power amplifier is used to drive PZT. The reflectivity of the mirror is 98%, corresponding to the fineness of 156. The length of the cavity can be adjusted continuously and is set to be 0.1~100 mm, corresponding to the free spectrum of 1.5~1 500 GHz and resolution of 9.65~9 650 MHz. The voltage and frequency of the PZT can also be adjusted continuously by 4×4 matrix keyboard setting to be 0~200 V and 1~30 Hz which are displayed on the 1602 LCD. The PZT driver can communicate with computer by RS232 serial port, and the voltage and frequency of the PZT can also be adjusted continuously by LabVIEW software. The longitudinal mode of a diode-pumped Nd: YVO4 laser is inspected to verify the system working well at last.
薛竣文, 方宇杰, 安宏波, 谢海军, 裴雪丹, 苏秉华. 基于STC单片机F-P扫描干涉仪的设计[J]. 光学与光电技术, 2014, 12(5): 8. XUE Jun-wen, FANG Yu-jie, AN Hong-bo, XIE Hai-jun, PEI Xue-dan, SU Bing-hua. Study of F-P Scanning Interferometer Based on STC Single-Chip Microcomputer[J]. OPTICS & OPTOELECTRONIC TECHNOLOGY, 2014, 12(5): 8.