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題 名 | 相位共軛術在光學影像處理上的應用研究 |
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作 者 | 蔡景鍠; 章明; 鍾炳濤; | 書刊名 | 中原學報 |
卷 期 | 17 1988.12[民77.12] |
頁 次 | 頁22-33 |
分類號 | 336.9 |
關鍵詞 | 光學; 相位共軛術; 影像處理; |
語 文 | 中文(Chinese) |
中文摘要 | 本文中利用鈦酸鋇單晶產生自發相位共軛光波的技術,製成相位共軛邁克遜干涉儀來執行影像的相減、相加和強度反轉,並實驗探討以晶體角落反射之自發方式產生相位共軛波時入射光束大小及入射點位置對共軛像波之空間強度分佈的影響。 進一步建立的,是一雙相位共輒鏡之邁克遜干涉儀,此干涉儀中使用二塊鈦酸鋇單晶分別以四波混合方式及自發方式產生相位共軛波,兩輸出之干涉光束的相對相差可用試錯法藉轉動四波混合之晶體方位予以調整,使干涉儀操作在線性區域或最靈敏點。利用此干涉儀進行影像相加及相減之質驗時,其相加與相減程度可隨意藉調整相對相位差而予以改變。 |
英文摘要 | A phase-conjugate Michelson interferometer using an internally selfpumped barium titanate crystal as reflector has been constructed to perform image subtraction, addition and intensity inversion. The spatial intensity distribution of the self-pumped phase conjugate wave has been discussed experimentally, which depends on the size of incident beam and on the position of the optical wave incident upon the crystal. A double phase-conjugator Michelson interferometer has been constructed to perform image subtraction and addition. In the interferometer, there are two output phase conjugate waves, one comes from the first crystal via four-wave mixing, and the other comes from the second crystal by self-pumped generation. The relative phase shift between the two output beams can be adjusted by rotating the first crystal. The degree of image subtraction or addition can be changed through changing the relative phase shift by simply rotating the crystal. |
本系統中英文摘要資訊取自各篇刊載內容。