本文選題：激光技術(shù)　切入點(diǎn)：穩(wěn)定度　出處：《量子電子學(xué)報》2017年04期

【摘要】：設(shè)計(jì)了一套高穩(wěn)定度大能量輸出的三波長Nd:YAG激光系統(tǒng),用作激光清洗光源。該系統(tǒng)包括振蕩級、放大級及后續(xù)波長切換系統(tǒng)。為解決激光棒熱致雙折射效應(yīng)造成的輸出能量下降和輸出不穩(wěn)定,在輸出鏡和激光工作物質(zhì)之間插入λ_(1/4)波片,并對波片的補(bǔ)償效果進(jìn)行了研究。結(jié)果表明:插入波片后振蕩級輸出能量提高了10%,穩(wěn)定度明顯提高。重復(fù)頻率為10 Hz時,1064 nm激光經(jīng)放大后單脈沖能量可達(dá)700 mJ,其單次通過倍頻晶體BBO,得到532 nm激光的單脈沖能量為325.6 mJ,四倍頻后得到266 nm激光的單脈沖能量為84 mJ。1 h內(nèi)測得的三波長激光輸出能量不穩(wěn)定度均小于0.6%。
[Abstract]:A three wavelength Nd:YAG laser system with high stability and high energy output is designed, which can be used as laser cleaning light source.The system includes an oscillating stage, an amplifier stage and a subsequent wavelength switching system.In order to solve the problem of output energy decrease and output instability caused by thermal birefringence of laser rod, a 1 / 4) wave plate is inserted between the output mirror and the laser working material, and the compensation effect of the wave plate is studied.The results show that the output energy of the oscillating stage is increased by 10% and the stability is obviously improved.When the repetition rate is 10 Hz, the single pulse energy of 1064nm laser can reach 700mJ after amplification. The single pulse energy of 532nm laser is 325.6 MJ, and that of 266nm laser is 84 mJ.1 h.The instability of three wavelength laser output energy is less than 0.6.
【作者單位】： 中國科學(xué)院安徽光學(xué)精密機(jī)械研究所安徽光子器件與材料省級實(shí)驗(yàn)室;中國科學(xué)院大學(xué);中國科學(xué)技術(shù)大學(xué);合肥師范學(xué)院;
【分類號】：TN249
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本文編號：1692276