激光技术
激光技術
격광기술
LASER TECHNOLOGY
2013年
5期
631-635
,共5页
汪相如%谭庆贵%黄子强%孔令讲%杨若夫%幺周石
汪相如%譚慶貴%黃子彊%孔令講%楊若伕%幺週石
왕상여%담경귀%황자강%공령강%양약부%요주석
激光技术%液晶相控阵%双波束%2维扫描
激光技術%液晶相控陣%雙波束%2維掃描
격광기술%액정상공진%쌍파속%2유소묘
laser technique%liquid crystal optical phase array%dual beam%2-D steering
为了在光学相控阵中实现双波束成形和2维扫描，以玻璃作为基底材料，以液晶作为移相介质，利用液晶的电控移相特性，对入射光束进行双波束成形和相控空间扫描；采用现场可编程门阵列芯片对液晶驱动芯片进行波控数据发送，完成对液晶移相阵列的电压驱动，从而达到电控光束扫描功能，完成单个透射型液晶光学相控阵组件的研制；利用该组件的电控光束扫描功能，采用多个组件级联的方式，实现基于透射型液晶光学相控阵组件的双波束成形和2维扫描技术。结果表明，该系统能够实现双波束独立偏转控制，以及高精度的空间2维偏转。
為瞭在光學相控陣中實現雙波束成形和2維掃描，以玻璃作為基底材料，以液晶作為移相介質，利用液晶的電控移相特性，對入射光束進行雙波束成形和相控空間掃描；採用現場可編程門陣列芯片對液晶驅動芯片進行波控數據髮送，完成對液晶移相陣列的電壓驅動，從而達到電控光束掃描功能，完成單箇透射型液晶光學相控陣組件的研製；利用該組件的電控光束掃描功能，採用多箇組件級聯的方式，實現基于透射型液晶光學相控陣組件的雙波束成形和2維掃描技術。結果錶明，該繫統能夠實現雙波束獨立偏轉控製，以及高精度的空間2維偏轉。
위료재광학상공진중실현쌍파속성형화2유소묘，이파리작위기저재료，이액정작위이상개질，이용액정적전공이상특성，대입사광속진행쌍파속성형화상공공간소묘；채용현장가편정문진렬심편대액정구동심편진행파공수거발송，완성대액정이상진렬적전압구동，종이체도전공광속소묘공능，완성단개투사형액정광학상공진조건적연제；이용해조건적전공광속소묘공능，채용다개조건급련적방식，실현기우투사형액정광학상공진조건적쌍파속성형화2유소묘기술。결과표명，해계통능구실현쌍파속독립편전공제，이급고정도적공간2유편전。
In order to realize dual beam formation and 2-D scan in optical phased array , choosing glass as substrate material and liquid crystal as phase-shifting medium, using the electric control phase-shifting characteristics of liquid crystal, double beam formation and phase control spatial scanning of incident light were gotten .Wave control data were transmitted to LCD driver chip by FPGA chip and the liquid crystal phase shifting array was driven by voltage , and beam scanning function was controlled , so a single transmissive-type liquid crystal optical phased-control array assembly was developed.Therefore, based on beam scanning function of the assembly , a liquid crystal optical phased array was developed by cascading multiple-assembly to realize dual beam formation and 2-D scan.The results show that the cascading system has the ability to achieve double beam independent deflection control and high precision 2-D deflection.
