本研究主要利用飛秒雷射之加工特性實現材料內部光學元件製作。飛秒雷射具有超短脈衝及光能量密度極高之特性，並擁有特殊的光化學剝離機制，而這些特性有別於一般雷射所帶來較小的熱影響區、加工尺寸精密度高、及熱應力較低等優勢，可以在透明材料內部達到較高精密度之加工。
而有別於一般光學元件製作，飛秒雷射於透明材料內部所製作之光學元件具有結構較不易的磨損，而且可以達到更好的空間利用率而製作出複合式光學元件。本研究成功的在透明材料PMMA中製作出聚焦元件，透過光學模擬設計後進行內部加工，並對所做之元件進行光學量測觀察其聚焦情形，最後進行模擬與實驗驗正。

This study aims to fabricate inner optical components by femtosecond laser. Femtosecond laser is characterized with ultra-short pulse and high fluence. And with the unique mechanism of photochemical peeling, femtosecond laser has advantages of small heat-affected zone, high precision, and low thermal stress. Therefore, optical components inside transparent materials can be manufactured precisely.

In contrast with the exterior structure of optical components, the inner structure inside transparent materials by femtosecond laser sustain abrasion and have better space utilization, which is suitable for manufacturing compound optical components. This study has successfully fabricated light-converging optical components in PMMA. And with incorporation of optical simulation, the components has calibrated and verified. Finally, comparisons between simulations and experiments have been done.

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