本論文藉由三面鏡共振腔設計以及在腔內加入雙折射晶體 YVO 4 的方法，來產生 Yb:YAB 晶體之圓柱向量光束， 透過 ABCD 矩陣以 及 G 1 G 2 穩定區 的分析，來找出共振腔穩定區中尋常光 o ray 與非尋 常光 e ray 單獨存在的位置， 而雙折射晶體則可以有效的提升這兩種 光單獨存在的範圍， 在第二段腔長 z 2 為 73.5 cm 時，可以透過調整第 一段共振腔長度 z 1 達到切換徑向偏振 RP 與方位角偏振 AP 的效果 在共振腔內加入聲光調製晶體後，則可以使輸出的圓柱向量光束帶有 Q 開關脈衝，且不影響其偏振品質。

In this thesis, we generate cylindrical vector beam in an Yb:YAB laser by using cavity design and birefringent crystal (YVO4). Through the analysis of the ABCD matrix and the G1G2, we can find the stable region of the cavity. And also we can find the where ordinary ray (o-ray) and extraordinary ray (e-ray) exist separately, the birefringent crystals can substantially increase stable region of o-ray and e-ray. When the cavity length z2 is 73.5 cm, the radial polarization (RP) and azimuthal polarization (AP) can be switched by adjusting the cavity length z1. After adding acousto-optic modulation crystal in the cavity, the cylindrical vector beam with Q-switcheded pulses can be obtained, and the polarization quality won't be affected.

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