CAJ | 학술논문

为了探究液体表面波的波动规律,提出了一种基于激光衍射的探测方法.未扩束的激光束直接斜入射到波动液面,液面波动的强度由电磁式激发器控制、频率由信号发生器控制,用CCD采集光衍射图样并传送到计算机中实时处理.根据波动光学理论,给出了衍射光场和液体表面波之间的解析关系,发现实验现象和理论分析吻合.实验结果表明:该方法具有实时、准确、无损的特点.
위료탐구액체표면파적파동규률,제출료일충기우격광연사적탐측방법.미확속적격광속직접사입사도파동액면,액면파동적강도유전자식격발기공제、빈솔유신호발생기공제,용CCD채집광연사도양병전송도계산궤중실시처리.근거파동광학이론,급출료연사광장화액체표면파지간적해석관계,발현실험현상화이론분석문합.실험결과표명:해방법구유실시、준학、무손적특점.
A method of detecting liquid surface wave based on laser diffraction was proposed. A He-Ne laser beam was obliquely incident upon liquid surface wave directly, the wave intensity was controlled by an electromagnetic type exciter and the frequency of the liquid wave was controlled by a signal generator, the laser diffraction patterns from liquid surface waves were collected by a charge-coupled device. The dependence of the diffracted field on the surface waves was derived by theory of wave optics. The experiment result indicates that the proposed method has the advantages of high sensitivity, high speed and non-destructive.