以單塊二維非週期性晶疇極化反轉鈮酸鋰於Nd:YVO4雷射同時達成電光Q調制及腔內和頻橘黃光產生

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姓名

周䓵譽(Pin-yu Chou) 查詢紙本館藏

畢業系所

光電科學與工程學系

論文名稱

以單塊二維非週期性晶疇極化反轉鈮酸鋰於Nd:YVO4雷射同時達成電光Q調制及腔內和頻橘黃光產生
(Monolithic two dimension aperiodically poled lithium niobate for simultaneous laser Q-switched and intracavity sum frequency generation in a dual wavelength Nd:YVO4 laser)

相關論文

★ Continuous-wave narrow-line yellow laser generation in a diode-pumped Nd:YVO4 laser using volume Bragg gratings	★ 半導體雷射泵浦內建式Q-調制Nd:MgO:PPLN雷射之研究
★ 主動式多通道窄頻寬通Ti:PPLN波導濾波及模態轉換器之研究	★ 以鎂掺雜鈮酸鋰製作二倍頻藍光雷射波導元件之製程研究
★ 非週期性晶格極化反轉鈮酸鋰作為主動式窄頻寬通多波長濾波器及倍頻多波長濾波器	★ 非週期性晶格極化反轉鈮酸鋰作為有效率的二倍頻和模態轉換器之研究
★ 積體式週期與非週期極性反轉鈮酸鋰光電與雷射元件	★ 退火式質子交換波導PPLN電光調制TM模態轉輻射偏振態之研究
★ 高效率雙Nd:YVO4 雷射和頻黃光產生系統	★ 以串級式電光週期性晶格極化反轉鈮酸鋰達成三波長主動式Q-調制Nd:YVO4雷射
★ 以單塊二維週期性晶格極化反轉鈮酸鋰同時作為Nd:YVO4雷射之電光Q調制器和腔內光參量振盪器	★ 綠光準相位匹配二倍頻質子交換鎂摻雜鈮酸鋰波導的製程研究
★ 以單晶片串級式週期性準相位匹配波長轉換器與非週期性準相位匹配電光偏振模態轉換器達成主動式調制窄頻輸出光參量振盪器之研究	★ 單片非週期性晶疇極化反轉鈮酸鋰同時作為Nd:YVO4雷射Q-調制和腔內光參量產生之研究
★ 準相位匹配二倍頻軟質子交換鎂摻雜鈮酸鋰波導研究	★ 以雙體積全像布拉格光柵及二維週期性晶疇極化反轉鈮酸鋰於Nd:YVO4雷射內達成脈衝式窄頻光參量振盪器之研究

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摘要(中)

鈮酸鋰具有良好的壓電、電光、鐵電、熱電以及非線性等特性，為一種具備多種光學特性的晶體，在本論文中利用超晶格結構的方法並透過模擬退火法優化來計算出二維非週期性結構，同時將布拉格光柵與和頻光柵整合於單一結構上。經由黃光微影以及高電場極化反轉的技術將二維非週期性結構製作於Z切鈮酸鋰晶片上，晶片尺寸為長3公分，寬3釐米，厚度500微米。利用此二維非週期性結構所提供的三個倒晶格向量，可以在Nd:YVO4雷射系統中以相同入射角度同時將1064 nm與1342 nm進行布拉格繞射以及和頻轉換，產生出脈衝式橘黃光雷射。

量測結果於Z方向外加電場350伏特時，1064 nm以及1342 nm的繞射效率分別為60 %和55 %。進一步將晶片放置於Nd:YVO4雷射系統中，透過電訊號調制，在攝氏70度時利用單一結構將1064 nm與1342 nm同時進行Q調制以及和頻轉換脈衝式橘黃光雷射輸出，在泵浦5.7瓦特下，可以得到脈寬為8.4 ns、頻寬0.4 nm、脈動雷射間擾動情形8.9 %以及尖端功率512瓦特之脈衝式橘黃光雷射。

摘要(英)

Compact, high-repetition-rate pulsed visible coherent light sources are attractive for many applications, such as biomedicine, remote sensing, astronomy, and displays. The Q-switched all-solid-state laser technique can be a promising approach to attain such light sources. Moreover, due to the high nonlinearity and highly engineerable characteristics of the quasi-phase-matching(QPM) material, a device as simultaneous a Q-switch and wavelength converter can be realized in a two-dimensional aperiodically poled lithium niobate (APPLN).

In this thesis, we have designed and fabricated a unique 2D APPLN device integrating the functionalities of the Q-switch for two laser lines(1064nm and 1342 nm) simultaneously and sum frequency generator in a Nd:YVO4 laser system to generate pulsed yellow-orange laser, the such device was designed by aperiodic optical superlattice(AOS) technique and optimized by simulated annealing(SA) method.

In operation, 350 volts at repetition rate of 1 KHz drove the device, while the diffraction efficiencies of 1064 nm and 1342 nm of 60 % and 55 % were measured, respectively. At diode pump power of 5.7 watts, a yellow-orange pulse with pulse width of 8.4 ns, bandwidth of 0.4 nm, and peak power of 512 can be obtained, meanwhile, the peak-to-peak fluctuation of 8.9% was also found.

關鍵字(中)

★ 鈮酸鋰
★ 和頻轉換
★ Q調制

關鍵字(英)

★ Lithium niobate
★ Sum frequency generation
★ Q-switching

論文目次

第一章緒論...............................1
1-1歷史與發展...............................1
1-2 鈮酸鋰晶體(Lithium Niobate, LiNbO3).....2
1-3 研究動機................................3
1-4 內容概要................................11
第二章理論分析..............................12
2-1 鈮酸鋰之電光效應.........................12
2-2 布拉格繞射(Bragg diffraction)...........16
2-3 共振腔Q調制.............................19
2-4 准相位匹配(Quasi-phase-matching, QPM)...24
2-5 和頻機制(Sum frequency generation, SFG).26
第三章元件設計及製程.........................29
3-1 雙波長電光Q調制及和頻設計..................29
3-2 元件製程................................37
第四章實驗量測與結果.........................45
4-1 布拉格繞射效率量測........................45
4-2 和頻轉換之溫度相位匹配量測..................48
4-3 腔內Q調制橘黃光雷射特性量測.................49
第五章結論與未來展望..........................54
5-1 結論....................................54
5-2 未來展望.................................55
第六章參考文獻...............................56

參考文獻

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指導教授

陳彥宏(Yen-hung Chen)

審核日期

2014-8-22

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