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A numerical model of the rod laser medium pumped by laser-diode array (LDA) end is set up. Considering the influence of temperature correlation of the thermodynamic parameters of the material and heat transfer coefficient between air and medium, using the thermal conduction equations and the thermal-elastic equations, the transient distributions of temperature and thermal stress and strain in the composite rod medium and un-composite rod medium are calculated by the finite element analysis method. The effects of pump power and heat transfer coefficient and time on transient distributions of temperature and thermal stress and strain in the medium are analyzed. The results indicate that the positions of maximal temperature maximal tensile stress and maximal axial strain of the composite rod are different from those of the un-composite rod. And the maximal temperature, maximal tensile stress and maximal axial strain of the composite rod are respectively 73 per cent, 60 per cemt, and 33 per cent of the corresponding values of the un-composite rod. It is obvious that the thermal effect of the composite rod is greatly reduced. The theoretical results provide theoretical reference for the design of solid laser pumped by LDA and experimental study.
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Keywords:
- composite rod laser /
- laser-diode array end-pumping /
- finite element method /
- thermal effect
[1] He W J, Yao B Q, Wang Y Z, Ju Y L 2007 Acta Phys. Sin. 56 3240 (in Chinese) [贺万骏、姚宝权、王月珠、鞠有伦 2007 56 3240]
[2] Wu J, Summers H D 2009 Chin. Phys. B 18 4912
[3] Zheng Y, Gao M Y, Yao J Q 2003 J. Optoelectron Laser 14 1094 (in Chinese) [郑 义、高明义、姚建铨 2003光电子·激光 14 1094]
[4] Song X L, Li B B, Wang S Y, Cai D F, Wen J G, Guo Z 2007 Chin.J.Lasers 34 1476 (in Chinese) [宋小鹿、李兵斌、王石语、蔡德芳、文建国、过 振 2007 中国激光 34 1476]
[5] Masaki T, Noboru T, Tadashi K 1996 IEEE J. Sel. Top. Quantum Electron. 3 9
[6] Li M Z, Zhu Z S 2007 J. Dongguan Univ. Techn.14 33 (in Chinese) [李明真、朱占收 2007 东莞理工学院学报 14 33]
[7] Liu M Q, Li B C 2008 Acta Phys. Sin. 57 3402 (in Chinese) [刘明强、李斌成 2008 57 3402]
[8] Liu Q X, Zhong M, Jiang D, Qi W Z, Cai B W, Hao Q L, Zhao F D 2006 Laser Infrared 36 670 (in Chinese)[刘全喜、钟鸣、江 东、齐文宗、蔡邦维、郝秋龙、赵方东 2006 激光与红外 36 670]
[9] Song X L, Guo Z, Li B B, Wang S Y, Cai D F, Wen J G 2009 Acta Phys. Sin. 58 1700 (in Chinese)[宋小鹿、过 振、李兵斌、王石语、蔡德芳、文建国 2009 58 1700]
[10] Koechner W 2002 Solid-State Laser Engineering (Beijing: Science Press) p405 (in Chinese)[克希耐尔 W 2002 固体激光工程(中译本) (北京:科学出版社) 第405页]
[11] Brown D C 1998 IEEE J. Quantum Electron. 34 2383
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[1] He W J, Yao B Q, Wang Y Z, Ju Y L 2007 Acta Phys. Sin. 56 3240 (in Chinese) [贺万骏、姚宝权、王月珠、鞠有伦 2007 56 3240]
[2] Wu J, Summers H D 2009 Chin. Phys. B 18 4912
[3] Zheng Y, Gao M Y, Yao J Q 2003 J. Optoelectron Laser 14 1094 (in Chinese) [郑 义、高明义、姚建铨 2003光电子·激光 14 1094]
[4] Song X L, Li B B, Wang S Y, Cai D F, Wen J G, Guo Z 2007 Chin.J.Lasers 34 1476 (in Chinese) [宋小鹿、李兵斌、王石语、蔡德芳、文建国、过 振 2007 中国激光 34 1476]
[5] Masaki T, Noboru T, Tadashi K 1996 IEEE J. Sel. Top. Quantum Electron. 3 9
[6] Li M Z, Zhu Z S 2007 J. Dongguan Univ. Techn.14 33 (in Chinese) [李明真、朱占收 2007 东莞理工学院学报 14 33]
[7] Liu M Q, Li B C 2008 Acta Phys. Sin. 57 3402 (in Chinese) [刘明强、李斌成 2008 57 3402]
[8] Liu Q X, Zhong M, Jiang D, Qi W Z, Cai B W, Hao Q L, Zhao F D 2006 Laser Infrared 36 670 (in Chinese)[刘全喜、钟鸣、江 东、齐文宗、蔡邦维、郝秋龙、赵方东 2006 激光与红外 36 670]
[9] Song X L, Guo Z, Li B B, Wang S Y, Cai D F, Wen J G 2009 Acta Phys. Sin. 58 1700 (in Chinese)[宋小鹿、过 振、李兵斌、王石语、蔡德芳、文建国 2009 58 1700]
[10] Koechner W 2002 Solid-State Laser Engineering (Beijing: Science Press) p405 (in Chinese)[克希耐尔 W 2002 固体激光工程(中译本) (北京:科学出版社) 第405页]
[11] Brown D C 1998 IEEE J. Quantum Electron. 34 2383
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