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

Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/61824

Title:	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
Authors:	黃錦峯;Huang,Jin-feng
Contributors:	光電科學與工程學系
Keywords:	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
Date:	2013-11-06
Issue Date:	2014-02-13 17:43:17 (UTC+8)
Publisher:	國立中央大學
Abstract:	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.
Appears in Collections:	[Graduate Institute of Optics and Photonics] Electronic Thesis & Dissertation

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