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    請使用永久網址來引用或連結此文件: http://ir.lib.ncu.edu.tw/handle/987654321/61824


    題名: 以週期性雙稜鏡型晶疇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;Double-prism domain PPLN for simultaneous laser Q-switching and optical parametric oscillation in a Nd:YVO4 Laser
    作者: 黃錦峯;Huang,Jin-feng
    貢獻者: 光電科學與工程學系
    關鍵詞: 週期性雙稜鏡型晶疇極化反轉鈮酸鋰;Nd:YVO4雷射;Q-調制;光參量振盪器;Double-prism domain PPLN;Nd:YVO4 laser;Q-switching;OPO
    日期: 2013-11-06
    上傳時間: 2014-02-13 17:43:17 (UTC+8)
    出版者: 國立中央大學
    摘要: 在本論文中,致?於把?種功能的元件整合在同一塊晶體上。此?種元件分別為電光光束偏折器元件及光??產生器與光??振盪器,在本實驗中已成功製作出雙稜鏡 (double-prism domain ,DPD)週期性晶格極化反轉鈮酸鋰晶體,更進一步,將此晶體置入Nd:YVO4雷射系統中,同時達成電光Q調制開關及光參量產生器與光參量振盪器。
    此雙稜鏡 (double-prism domain ,DPD)週期性晶格極化反轉鈮酸鋰晶體週期為30μm,可當作光束偏折器與光參量產生器使用,在光束偏折器方面,當施加電壓約為300V時可將光束偏折1度,而放入雷射共振腔後,藉由外加180V的強度、頻率為1k赫茲的脈衝電壓於晶體後達成電光Q調制開關,並在雷射二極體泵浦功率為7.5W時量測波長1550nm的光參量振盪器訊號光,可得到脈衝能量為8.14uJ、脈衝寬度為3.5ns (尖峰功率為2.3kW),且可達成光參量振盪器連續波長調變。
    In this thesis, we have devoted to integrate two device functions in a monolithic LiNbO3 crystal. These two devices are an EO beam deflector and an optical parametric generator (OPG) or optical parametric oscillator (OPO). The PPLN crystal has a double-prism domain (DPD) structure has been designed and fabricated in this work. We further inserted this DPD PPLN crystal in a Nd:YVO4 laser system to simultaneously function as a laser Q switch and an intracavity optical parametric generator (OPG) and optical parametric oscillator (OPO).
    The PPLN crystal has a double-prism domain (DPD) structure with a domain period of 30 m to simultaneously as an electro-optic (EO) beam deflector (and therefore an EO Q-switch in the laser cavity) and an optical parametric down converter. The characterized deflection angle of the DPD PPLN device was 1o at the voltage about 300V. And at 180V Q-switching voltage and 1-kHz switching rate, we measured a down-converted signal at 1550 nm with pulse energy of 8.14 J and pulse width of 3.5ns ( peak power of ~2.3 kW) from the constructed IOPO at 7.5W diode pump power. Continuous wavelength tuning of the IOPO signal was also demonstrated.
    顯示於類別:[光電科學研究所] 博碩士論文

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