激光技术
激光技術
격광기술
LASER TECHNOLOGY
2014年
3期
394-397
,共4页
光学器件%波片%偏振态%相位差%线偏振光
光學器件%波片%偏振態%相位差%線偏振光
광학기건%파편%편진태%상위차%선편진광
optical devices%wave-plate%polarization state%phase difference%linearly polarized light
为了研究线偏振光通过多个任意厚度波片后的偏振态，利用线偏振光叠加的方法，对两个晶体光轴夹角为45°的不同厚度波片计算了透射的两个正交线偏振光的强度和相位差，由此得到叠加后的偏振态及透射光总强度，并分析了它们随波片延迟量、入射光方位角的变化关系。结果表明，透射光的偏振态由后面波片的延迟量决定，强度由前面波片的延迟量和入射线偏振光方位角决定，同时说明正反向使用时，透射光的偏振态和强度一般不同。该研究结果可用于类似结构退偏器（如Lyot退偏器）的分析。
為瞭研究線偏振光通過多箇任意厚度波片後的偏振態，利用線偏振光疊加的方法，對兩箇晶體光軸夾角為45°的不同厚度波片計算瞭透射的兩箇正交線偏振光的彊度和相位差，由此得到疊加後的偏振態及透射光總彊度，併分析瞭它們隨波片延遲量、入射光方位角的變化關繫。結果錶明，透射光的偏振態由後麵波片的延遲量決定，彊度由前麵波片的延遲量和入射線偏振光方位角決定，同時說明正反嚮使用時，透射光的偏振態和彊度一般不同。該研究結果可用于類似結構退偏器（如Lyot退偏器）的分析。
위료연구선편진광통과다개임의후도파편후적편진태，이용선편진광첩가적방법，대량개정체광축협각위45°적불동후도파편계산료투사적량개정교선편진광적강도화상위차，유차득도첩가후적편진태급투사광총강도，병분석료타문수파편연지량、입사광방위각적변화관계。결과표명，투사광적편진태유후면파편적연지량결정，강도유전면파편적연지량화입사선편진광방위각결정，동시설명정반향사용시，투사광적편진태화강도일반불동。해연구결과가용우유사결구퇴편기（여Lyot퇴편기）적분석。
Adopting the means of light vector superimposition , the polarization states of linearly polarized light transmitting through several wave-plates with arbitrary thickness were analyzed .Taking two wave plates whose optical axes are oriented at 45°as example, the polarization states and intensity of transmitted light were calculated .It is found that the polarization states are dependent on retardation of the back wave-plate, and the intensity is dependent on retardation of the front wave-plate and vibration azimuth angle of incident light .It also indicates that the characteristics are not the same when the two wave plates are used in forward and reverse directions .The theoretical results can be applied to the analysis of depolarizer , such as Lyot depolarizer .
