本文選題：熱效應(yīng)　切入點(diǎn)：穩(wěn)態(tài)熱模型　出處：《激光與紅外》2017年07期 　論文類型：期刊論文

【摘要】：基于2μm Tm:YLF激光器的實(shí)際工作條件建立了各向異性激光晶體的穩(wěn)態(tài)熱模型,通過解析法得到了Tm晶體內(nèi)溫度場分布的解析表達(dá)式;模擬并分析了泵浦功率、光斑半徑、晶體端面尺寸對Tm晶體內(nèi)溫度場分布的影響。最終得到了在不同條件下晶體內(nèi)部溫度分布,結(jié)果表明:摻雜濃度的增加加劇了晶體的溫升,增加了晶體熱畸變不均勻性,產(chǎn)生更明顯的熱效應(yīng);而晶體長度的適度增加降低了晶體的溫升,緩解了晶體熱畸變不均勻性,削弱了晶體的熱效應(yīng)。所得結(jié)論可以為LD抽運(yùn)Tm:YLF激光器的腔型及散熱系統(tǒng)設(shè)計(jì)提供理論支持。
[Abstract]:Based on the actual working conditions of 2 渭 m Tm:YLF laser, the steady state thermal model of anisotropic laser crystal is established, the analytical expression of temperature field in TM crystal is obtained by analytical method, and the pump power, spot radius and pump power are simulated and analyzed. The effect of crystal end dimension on the temperature field distribution in TM crystal is obtained. The results show that the increase of doping concentration intensifies the temperature rise of the crystal and increases the inhomogeneity of the thermal distortion of the crystal. A more obvious thermal effect is produced, and a moderate increase in the length of the crystal reduces the temperature rise of the crystal and alleviates the inhomogeneity of the thermal distortion of the crystal. The results can provide theoretical support for the design of cavity and heat dissipation system of LD pumped Tm:YLF laser.
【作者單位】： 廣東東軟學(xué)院計(jì)算機(jī)科學(xué)與技術(shù)系;
【基金】：國家自然科學(xué)基金項(xiàng)目(No.61363047) 廣東省佛山市科技創(chuàng)新項(xiàng)目(No.2016AG100382)資助
【分類號】：TN248
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本文編號：1625454