DC 欄位 值 語言 DC.contributor 光電科學與工程學系 zh_TW DC.creator 高行隆 zh_TW DC.creator Hsin-Lung Kao en_US dc.date.accessioned 2024-12-16T07:39:07Z dc.date.available 2024-12-16T07:39:07Z dc.date.issued 2024 dc.identifier.uri http://ir.lib.ncu.edu.tw:444/thesis/view_etd.asp?URN=110226077 dc.contributor.department 光電科學與工程學系 zh_TW DC.description 國立中央大學 zh_TW DC.description National Central University en_US dc.description.abstract 為了獲得高平均功率同調光，可藉由提升TDL架構的pump laser-TDL光轉換效率或是提高seed從MA架構獲得的增益來達成。以中山大學提供的Yb:YAG樣本作增益介質，通過自行設計的激發腔與晶體散熱系統，本論文初步建立了TDL架構與MA架構。對於TDL架構，其在共振腔長度為270 mm、輸出耦合鏡之曲率半徑與反射率分別為500 mm及95%、晶體濃度為13.3 at%時，藉由50 Hz repetition rate、duty cycle 10%，平均功率43.6 W的pump laser能夠有平均輸出功率為22.68 W，slope efficiency為61.3%，pump laser-TDL光轉換效率52%。對於MA架構，建立了二通放大器，使1040 nm、pulse energy 25.68 nJ的seed光能有1.8倍的增益，驗證了在平均功率12.4 W的pump laser，晶體能有1.55×10^21 (cm^(-3))的雷射上能階電子密度。通過二通放大結果，可推估seed laser pulse energy 2.568 μJ，其中心波長改為1030 nm且FWHM 1nm，能在趟數增加至9趟時有最大輸出能量0.5 J。 zh_TW dc.description.abstract To achieve high average power coherent light beam, the pump laser-TDL light transfer efficiency of a TDL system or the gain of a MA system should be enhanced. This research builds up a fundamental TDL system and a MA system, which based on the Yb:YAG samples offered by NSYSU as gain medium with self-designed pump cavity and crystal cooling system. For TDL system, this research shows that a 13.3 at.%, 300 μm Yb:YAG with a 270 mm long resonator which output coupler’s radius of curvature and reflectivity is 500 mm and 95%,respectively, pumped by a 50 Hz repetition rate,duty cycle 10%,average power 43.6 W pump laser, can deliver TDL, which average output power comes to 22.68 W and the slope efficiency is 61.3%, the pump laser-TDL light transfer efficiency is 52%. For MA system, a 2-pass amplifier is built to let a 1040 nm, pulse energy 25.68 nJ seed has a 1.8x amplification, which proves that the upper laser level density should be 1.55×10^21 (cm^(-3)) when pumped by an average power 12.4 W pump laser. By the results of 2-pass amplifier, the simulation shows a 9-pass amplifier can amplify the seed laser, which central wavelength is 1030 nm and FWHM 1 nm , pulse energy 2.568 μJ, to 0.5 J. en_US DC.subject 薄片雷射 zh_TW DC.subject 釔鋁石榴石 zh_TW DC.subject 薄片多通放大器 zh_TW DC.subject Yb:YAG en_US DC.subject Thin disk laser en_US DC.subject Thin disk multiple-pass amplifier en_US DC.title YbYAG薄片雷射與多通放大器開發研究 zh_TW dc.language.iso zh-TW zh-TW DC.title Yb:YAG Thin Disk Laser and Multiple-pass Amplifier en_US DC.type 博碩士論文 zh_TW DC.type thesis en_US DC.publisher National Central University en_US