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系統識別號 U0026-3107201315513500
論文名稱(中文) 方位角和徑向偏振固態脈衝雷射
論文名稱(英文) Radial and azimuthal polarizations in passively Q-switched solid-state laser
校院名稱 成功大學
系所名稱(中) 光電科學與工程學系
系所名稱(英) Department of Photonics
學年度 101
學期 2
出版年 102
研究生(中文) 李東霖
研究生(英文) Dong-Lin Li
學號 l76014051
學位類別 碩士
語文別 中文
論文頁數 47頁
口試委員 指導教授-魏明達
口試委員-蔡宗祐
口試委員-曾碩彥
口試委員-謝文峰
中文關鍵字 圓柱向量偏振  Q-開關 
英文關鍵字 radially polarized beam  azimuthally polarized beam  Q-switched 
學科別分類
中文摘要 本論文研究被動Q-開關Nd:GdVO4雷射的圓柱向量偏振行為。在三面鏡系統的架構下,將輸出耦合鏡往穩定區的邊界移動,可以看到雷射輸出由Gaussian mode轉變成Ring mode。同時在Ring mode範圍內可觀察到方位角和徑向偏振。隨後我們在腔內加入一飽和吸收體,產生Q-開關脈衝,並比較脈衝和連續波這兩種條件下的圓柱向量偏振行為。實驗結果顯示飽和吸收體的加入會減小Ring mode的圓柱向量偏振範圍,但我們仍可得到有高偏振比的圓柱向量偏振脈衝。
英文摘要 Radially and azimuthally polarized beams were generated in passively Q-switched Nd:GdVO4 laser with a Cr:YAG saturable absorber. Based on the cavity design, the cavity configuration simultaneously satisfied the thereshold of the passive Q-switching and the generating condition of the cylindrical vector beam. When the pump power was 5W, the pulse width, repetition frequency, and the average power were 110 ns, 12.3 kHz, and 270 mW, respectively. The pulse operation had better polarization ratio than that of continuous-wave operation. Moreover, the spatial-dependent pulse trains were explored, and the dynamical behavior is an interesting future work.
論文目次 摘要 I
Abstract II
誌 謝 III
目錄 IV
圖目錄 VI
第一章、 序論 1
1.1、圓柱向量偏振脈衝簡介 1
1.2、動機與目的 2
第二章、 原理 5
2.1、徑向偏振和方位角偏振 5
2.2、Q開關原理 10
2.3、Cr4+:YAG工作原理 13
第三章、 實驗與結果討論 19
3.1、連續波實驗架構 19
3.1-1、實驗方法 20
3.1-2、實驗結果和討論 22
3.2、脈衝實驗架構 28
3.2-1、脈衝實驗方法 29
3.2-2、脈衝實驗結果和討論 30
第四章、 結論與未來展望 44
4.1、結論 44
4.2、未來展望 44
文獻參考資料 45
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