【摘要】：針對(duì)激光二極管端面泵浦圓片Yb∶YAG晶體產(chǎn)生的熱效應(yīng)問題,以實(shí)際工作特點(diǎn)為基礎(chǔ),通過熱傳導(dǎo)理論分析了熱效應(yīng)。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(duì)變熱導(dǎo)率圓片Yb∶YAG晶體溫度場(chǎng)的影響。研究結(jié)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(duì)含質(zhì)量分?jǐn)?shù)為8%、晶體半徑為4mm、厚度為0.5mm的圓片Yb∶YAG晶體進(jìn)行泵浦,在將晶體的熱導(dǎo)率分別視為常量和變量時(shí),泵浦端面獲得的最大溫升分別為52.15℃和59.51℃。根據(jù)計(jì)算結(jié)果,設(shè)計(jì)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(yīng)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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