本文關(guān)鍵詞：諧振腔失諧對二極管泵浦Nd:YAG激光器性能的影響　出處：《紅外與激光工程》2017年06期 　論文類型：期刊論文

  更多相關(guān)文章： 諧振腔失諧 速率方程 可靠性 Nd YAG

【摘要】：理論和實驗研究了激光器諧振腔失諧對激光器性能的影響。一方面,理論上,基于準連續(xù)二極管泵浦、電光調(diào)Q固體激光器的特點,建立了包含諧振腔失諧修正函數(shù)的速率方程模型。通過數(shù)值仿真,模擬了不同激光模式、光斑半徑、孔闌半徑、孔闌位置情況下,諧振腔失諧對激光器損耗以及激光性能的影響。另一方面,實驗測量了諧振腔失諧對激光器性能的影響。對于長250 mm、最小孔闌半徑3.5 mm的凹凸非穩(wěn)腔,凹面全反鏡失諧比凸面輸出鏡失諧對激光器性能的影響大,當凹面全反鏡水平方向失諧角度由0增加到490μrad時,激光能量由220 m J下降到150.9 m J,下降31.4%,脈沖寬度由5 ns增大到6.5 ns,實驗結(jié)果和理論分析結(jié)果基本相符,說明激光模型的正確性。建立的模型與實驗方法為預(yù)測激光器諧振腔失諧對激光器性能的影響提供了一種有效工具,為高可靠性激光器設(shè)計提供了依據(jù)。
[Abstract]:Theoretical and experimental study of the laser resonator detuning on the performance of the laser. On the one hand, in theory, based on quasi-continuous diode pumping, electro-optic Q-switched solid-state laser characteristics. The rate equation model including the resonator detuning correction function is established. By numerical simulation, different laser modes, spot radius, aperture radius and aperture position are simulated. The influence of cavity detuning on laser loss and laser performance is also studied. On the other hand, the effect of resonator detuning on laser performance is measured experimentally. For the concave and convex unstable cavity with the smallest aperture radius of 3.5 mm, the detuning of the concave full mirror is more important than the detuning of the convex output mirror on the performance of the laser. When the angle of detuning in horizontal direction of concave full mirror increases from 0 to 490 渭 rad, the laser energy decreases from 220mJ to 150.9mJ, which decreases by 31.4%. The pulse width is increased from 5 ns to 6.5 ns, and the experimental results are in good agreement with the theoretical analysis results. The established model and experimental method provide an effective tool for predicting the influence of laser resonator detuning on laser performance and provide a basis for the design of high reliability laser.
【作者單位】： 北京空間機電研究所;
【分類號】：TN248.1
【正文快照】： 0 引言 LD泵浦的全固態(tài)激光器結(jié)構(gòu)緊湊、效率高、穩(wěn)定好、壽命長,在星載激光雷達和空間光電對抗等領(lǐng)域內(nèi)有廣泛的應(yīng)用[1-7]。由于空間環(huán)境的特殊性,空間應(yīng)用的激光器不僅要滿足性能指標要求,還要滿足可靠性要求。激光諧振腔是激光器實現(xiàn)激光能量提取和輸出的關(guān)鍵。諧振腔失諧，

本文編號：1400848