【摘要】：針對激光二極管端面泵浦圓片Yb∶YAG晶體產(chǎn)生的熱效應問題,以實際工作特點為基礎,通過熱傳導理論分析了熱效應。分析了不同泵浦功率、超高斯階次、光斑半徑、晶體尺寸因素對變熱導率圓片Yb∶YAG晶體溫度場的影響。研究結果表明,使用泵浦功率為60W、超高斯階次為5、光斑半徑為400μm的泵浦光對含質(zhì)量分數(shù)為8%、晶體半徑為4mm、厚度為0.5mm的圓片Yb∶YAG晶體進行泵浦,在將晶體的熱導率分別視為常量和變量時,泵浦端面獲得的最大溫升分別為52.15℃和59.51℃。根據(jù)計算結果,設計了適合的激光器熱穩(wěn)腔,能充分抑制激光器產(chǎn)生的熱效應問題。
[Abstract]:In view of the thermal effect of laser diode end pumped wafer Yb:YAG crystal, the thermal effect is analyzed by means of heat conduction theory based on the actual working characteristics. The effects of different pump power, super-Gaussian order, spot radius and crystal size on the temperature field of Yb:YAG crystal with variable thermal conductivity are analyzed. The results show that the pump power is 60 W, the super Gaussian order is 5, and the spot radius is 400 渭 m, the pump power is 8%, the crystal radius is 4 mm, and the thickness of 0.5mm is 4 mm, and the pump power is 60 W, the thickness of the crystal is 4 mm, and the laser spot radius is 400 渭 m. When the thermal conductivity of the crystal is regarded as constant and variable respectively, the maximum temperature rise at the pump end is 52.15 鈩，

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