本文選題：準分子寬帶泵浦堿金屬激光器 + 泵浦閾值��； 參考：《北京郵電大學》2015年碩士論文

【摘要】：文章根據(jù)已有的研究模型,改進了以Cs-Ar混合氣體為增益介質(zhì)的五能級準分子寬帶泵浦堿金屬激光器(XPAL)的速率方程模型,通過模擬計算得到了不同溫度和弛豫氣體濃度下輸出激光能量隨輸入泵浦能量變化的曲線圖,模型得到的斜率效率和實驗數(shù)據(jù)基本符合。結(jié)果表明,其他條件不變的情況下,溫度越高,XPAL的閾值和斜率效率會越高；弛豫氣體濃度足夠大的時候,852nm的D2線沒有激光輸出；在一般條件下,XPAL在T=515K附近時效率最高。文章還研究了含有雙光子吸收機制的堿金屬蒸汽激光器的特性,建立了以Rb蒸汽為激光工作物質(zhì)的四能級速率方程模型,模擬結(jié)果得出含有雙光子吸收機制的堿金屬蒸汽激光器效率較高,但激光泵浦閾值也較高,效率和閾值隨工作溫度的升高而升高。
[Abstract]:In this paper, the rate equation model of a five-level excimer wideband pumped alkali metal laser with Cs-Ar mixture as gain medium is improved according to the existing research models. The curves of the output laser energy varying with the input pump energy at different temperature and relaxation gas concentration are obtained by simulation. The slope efficiency obtained by the model is in good agreement with the experimental data. The results show that the higher the temperature, the higher the threshold value and slope efficiency of XPAL, the higher the relaxation gas concentration is, the higher the threshold and slope efficiency will be, and when the concentration of relaxation gas is high enough, the D2 line at 852 nm will have no laser output, and the efficiency of XPAL will be the highest at T515K under general conditions. The characteristics of alkali metal vapor laser with two-photon absorption mechanism are also studied, and a four-level rate equation model with RB vapor as working material is established. The simulation results show that the alkali metal vapor laser with two-photon absorption mechanism is more efficient, but the laser pump threshold is also higher, and the efficiency and threshold value increase with the increase of operating temperature.
【學位授予單位】：北京郵電大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：TN248

【參考文獻】

相關(guān)期刊論文 前7條

1 余建華;祝強;全鴻雁;吳國誠;鄭偉;;高功率堿金屬蒸汽激光器在地球同步衛(wèi)星發(fā)射中的應用[J];激光與光電子學進展;2007年11期

2 楊子寧;王紅巖;陸啟生;郭少鋒;許曉軍;;半導體抽運堿金屬蒸氣激光器研究進展[J];激光與光電子學進展;2010年05期

3 譚彥楠;李義民;公發(fā)全;劉通;劉萬發(fā);;雙光子吸收420nm堿金屬蒸氣藍光激光器[J];中國激光;2013年10期

4 楊子寧;王紅巖;陸啟生;李元棟;許曉軍;;光譜特性對半導體泵浦堿蒸氣激光器性能的影響[J];強激光與粒子束;2010年10期

5 楊子寧;王紅巖;華衛(wèi)紅;陸啟生;肖楠;許曉軍;陳金寶;;半導體泵浦銣蒸氣激光器國內(nèi)首次出光[J];強激光與粒子束;2011年09期

6 岳德勝;李文煜;王紅巖;楊子寧;許曉軍;;準分子寬帶泵浦堿金屬激光器[J];強激光與粒子束;2012年10期

7 岳德勝;李文煜;王紅巖;楊子寧;許曉軍;;準分子寬帶泵浦堿金屬激光器泵浦特性分析[J];強激光與粒子束;2012年11期

，

本文編號：1946130