Nd:YAG固体激光放大器的参数优化研究
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摘要
针对激光空气电离实验的要求,本论文研制了一台氙灯泵浦电光调Q Nd∶YAG一级激光放大器。根据本振级工作物质和所要求的能量输出选择了适当尺寸的放大级介质,确定了放大级介质单位体积内的储能密度,并讨论了两级之间泵浦方式的匹配及放大级工作物质端面反馈消除的问题。通过实验数据绘制了放大级输出特性曲线,讨论了放大级的提取效率和输入能量之间的关系。结果表明该放大器在本振级输入能量为379.5mJ时,放大级达到增益饱和,提取效率最高,最大放大倍数为2.68倍,提取效率为90%,最大输出能量为1015.6mJ,峰值功率密度为68.4 MW/cm~2,此激光各项指标基本达到设计要求。
利用研制的氙灯泵浦电光调Q Nd∶YAG一级激光放大器进行了激光空气电离实验。当激光功率密度为508.6MW/cm~2,电压为53KV时,获得了8cm长的电离线。实验结果表明此激光放大器的各项指标达到了激光空气电离实验的需求。
Againsted the requirement of laser ionization experiment in air, the article developed a Xenon lamp-pumped、Q-switched Nd:YAG laser amplifier.According to local oscillation stage' s operation material and output energy requirement, we selected the amplification stage' s medium with appropriate size, determined the stored energy density per capacity, and discussed the questions which were the matching of pump way between the two-stage and feedback elimination of amplification stage' s operation material's side surface .we drawn the amplification stage' s output characteristic curve with experiment datas, and discussed the relationship between the extracting efficiency of amplification stage and input energy of laser.Theoretical and experimental results showed that the amplification stage reached gaining saturation,and the extracting efficiency reached the highest in the case of local oscillation stage' s input energy for 379.5mJ.The biggest amplifying multiple was 2.68, the extracting efficiency was 90%, the largest output energy was 1015.6mJ ,and the peakpower density was 68.4MW/ cm~2 .Those targets basicly met the requirement of the design.
Proceeded laser air breakdown experiment by making use of the developed Q-switched Nd:YAG laser amplifier.When the power density of laser was 508.6MW/cm~2 and electric voltage was 53KV, we could obtain 8cm length ionization. The results showed that the targets of laser amplifier achieved the requirement of air ionization laser experiment.
利用研制的氙灯泵浦电光调Q Nd∶YAG一级激光放大器进行了激光空气电离实验。当激光功率密度为508.6MW/cm~2,电压为53KV时,获得了8cm长的电离线。实验结果表明此激光放大器的各项指标达到了激光空气电离实验的需求。
Againsted the requirement of laser ionization experiment in air, the article developed a Xenon lamp-pumped、Q-switched Nd:YAG laser amplifier.According to local oscillation stage' s operation material and output energy requirement, we selected the amplification stage' s medium with appropriate size, determined the stored energy density per capacity, and discussed the questions which were the matching of pump way between the two-stage and feedback elimination of amplification stage' s operation material's side surface .we drawn the amplification stage' s output characteristic curve with experiment datas, and discussed the relationship between the extracting efficiency of amplification stage and input energy of laser.Theoretical and experimental results showed that the amplification stage reached gaining saturation,and the extracting efficiency reached the highest in the case of local oscillation stage' s input energy for 379.5mJ.The biggest amplifying multiple was 2.68, the extracting efficiency was 90%, the largest output energy was 1015.6mJ ,and the peakpower density was 68.4MW/ cm~2 .Those targets basicly met the requirement of the design.
Proceeded laser air breakdown experiment by making use of the developed Q-switched Nd:YAG laser amplifier.When the power density of laser was 508.6MW/cm~2 and electric voltage was 53KV, we could obtain 8cm length ionization. The results showed that the targets of laser amplifier achieved the requirement of air ionization laser experiment.
引文
[1]马养武,陈钰清著.激光器件.浙江大学出版社,2001,109
[2]华中工学院等编.激光技术,湖南:湖南科学技术出版社,1981.44
[3]徐荣浦,刘敬海编著.激光器件与技术教程.北京:北京工业学院出版社,1986.167
[4]天津大学编译.激光与技术.北京:科学出版社,1972.144
[5]W.克希耐尔.固体激光工程[M].北京:科学出版社,2002.356-377
[6]周炳琨,高以智等.激光原理.国防工业出版社,2004,8,187-197
[7]王春,陈绍和等.激光二极管列阵抽运的单纵模激光脉冲再生放大器.光学学报.2001.7,21(7)
[8]罗斌,激光二极管泵浦Nd:YAG多程激光放大器研究.硕士论文.中国工程物理研究所,2000.6
[9]Ross M.YAG laser operation by semiconductor laser pumping[A].Proc of IEEE[C].1968.
[10]王卫民,罗斌等.LD侧泵浦Nd:YAG板条双程功率放大器初步研究.强激光与粒束.2001.5,13(3)
[11]庞毓,王卫民.二极管泵浦Nd:YAG板条双通放大器技术研究.强激光与粒子束.2005.4,17(10)
[12]Frederic Druon.12mJ,350fs Yb:GdCOB regenerative amplifier.OpticsCommunications 199(2001)181-187
[13]Murray J E.Lowdermilk W H.Nd:YAG regenerative amplifier.J.Appl.Phys.1980
[14]丁磊,贾伟等.美国Mercury系统的最新进展.激光与光电子学进展.2004.8,41(8)
[15]贾伟,李明中等.美国Mercury系统得发展近况.激光与光电子学进展.2004.5,41(5)
[16]曹三松,张向阳等.Nd:YAG单程激光放大器的设计方法.激光技术.2001.11,25(6)
[17]王成程,於海武等.新型阵列式片状放大器全口径增益实验研究.强激光与粒子束.2003.5,23(5)
[18]彭海波,周寿桓等.高放大倍率单频Nd:YAG激光系统.中国激光.2002.7,29(7)
[19]Y.U.Guralnik.D.A.Kuznetsov.Powerful subnanosecond hybrid master oscillator-power amplifierNd:YAG laser system.Elements ofLaser Systems Co.
[20]Liu Lang,Bi Guojiang.Huang Maoquan.Research of single longitudinal mode main oscillator pumped by LD in MOPA system[J].Chinese J.Lasers.2004.31
[21]R.Dabu,C.Blanaru.Single frequency green nanosecond Nd:YAG microlaser-oscillator power-amplifier system.National Institute for Lasers,Plasma,and Radiation Physics.
[22]王运谦,刘朗等.大口径管状Nd:YAG放大器.激光与红外.2003.8,33(4)
[23]王成程,於海武等.新型高功率固体激光阵列式片状放大器,激光技术,2003.2,27(1)
[24]Comaskey B J.High average power diode pumped slab laser[J].IEEE J Q uant Elect.1992.28(4):992-996.
[25]高清松,童立新等,二极管泵浦Nd:YAG棒双通放大器技术,强激光与粒子束,2005.4,1(10)
[26]Xiaodong Yang.High-beam-quality,5.1 J,108 Hz diode-pumped Nd:YAG rod oscillator-amplifier laser system.Optics Communications.266(2006) 39-43
[27]练文,叶艾.高效率电光调Q固体激光器的实验研究.光学与光电技术.2005,3(6):26-28
[28]李适民,黄维玲.激光器件原理与设计.第二版.北京:国防工业出版社,2005:151-161
[19]李志刚.二极管泵浦固体激光器及放大器的研究:[博士学位论文].华中科技大学,2004
[30]Avizonis P V,Crrotbeck R L.J A P,1966,37:687
[31]沈柯.激光原理教程[M].北京:北京工业大学出版社.1986,95-106.
[32]孟绍贤,谷忠民,莽燕萍.电光开关削波和激光放大过程中的脉冲变窄[J].中国激光.1998,10(25):930-934.
[33]A.Y.Cabezas.G.L.Mcallister.Gain Saturationin Neodymium:Glass Laser Amplifiers[J].J.Appl.Phys.1967,38(9):3487-3491.
[34]范安辅,徐天华.激光技术物理[M].成都:四川大学出版社.1992,288-300.
[35]蓝信钜等.激光技术[M].北京:北京科学出版社.2000,145-170.
[36]余本海.两级串接连续Nd:YAG固体激光器的研究:[硕士学位论文].华中科技大学,2004
[37]杨轶.棒状固体热容激光器谐振腔及其热稳设计:[工学硕士学位论文].国防科学技术大学研究生院,2005
[2]华中工学院等编.激光技术,湖南:湖南科学技术出版社,1981.44
[3]徐荣浦,刘敬海编著.激光器件与技术教程.北京:北京工业学院出版社,1986.167
[4]天津大学编译.激光与技术.北京:科学出版社,1972.144
[5]W.克希耐尔.固体激光工程[M].北京:科学出版社,2002.356-377
[6]周炳琨,高以智等.激光原理.国防工业出版社,2004,8,187-197
[7]王春,陈绍和等.激光二极管列阵抽运的单纵模激光脉冲再生放大器.光学学报.2001.7,21(7)
[8]罗斌,激光二极管泵浦Nd:YAG多程激光放大器研究.硕士论文.中国工程物理研究所,2000.6
[9]Ross M.YAG laser operation by semiconductor laser pumping[A].Proc of IEEE[C].1968.
[10]王卫民,罗斌等.LD侧泵浦Nd:YAG板条双程功率放大器初步研究.强激光与粒束.2001.5,13(3)
[11]庞毓,王卫民.二极管泵浦Nd:YAG板条双通放大器技术研究.强激光与粒子束.2005.4,17(10)
[12]Frederic Druon.12mJ,350fs Yb:GdCOB regenerative amplifier.OpticsCommunications 199(2001)181-187
[13]Murray J E.Lowdermilk W H.Nd:YAG regenerative amplifier.J.Appl.Phys.1980
[14]丁磊,贾伟等.美国Mercury系统的最新进展.激光与光电子学进展.2004.8,41(8)
[15]贾伟,李明中等.美国Mercury系统得发展近况.激光与光电子学进展.2004.5,41(5)
[16]曹三松,张向阳等.Nd:YAG单程激光放大器的设计方法.激光技术.2001.11,25(6)
[17]王成程,於海武等.新型阵列式片状放大器全口径增益实验研究.强激光与粒子束.2003.5,23(5)
[18]彭海波,周寿桓等.高放大倍率单频Nd:YAG激光系统.中国激光.2002.7,29(7)
[19]Y.U.Guralnik.D.A.Kuznetsov.Powerful subnanosecond hybrid master oscillator-power amplifierNd:YAG laser system.Elements ofLaser Systems Co.
[20]Liu Lang,Bi Guojiang.Huang Maoquan.Research of single longitudinal mode main oscillator pumped by LD in MOPA system[J].Chinese J.Lasers.2004.31
[21]R.Dabu,C.Blanaru.Single frequency green nanosecond Nd:YAG microlaser-oscillator power-amplifier system.National Institute for Lasers,Plasma,and Radiation Physics.
[22]王运谦,刘朗等.大口径管状Nd:YAG放大器.激光与红外.2003.8,33(4)
[23]王成程,於海武等.新型高功率固体激光阵列式片状放大器,激光技术,2003.2,27(1)
[24]Comaskey B J.High average power diode pumped slab laser[J].IEEE J Q uant Elect.1992.28(4):992-996.
[25]高清松,童立新等,二极管泵浦Nd:YAG棒双通放大器技术,强激光与粒子束,2005.4,1(10)
[26]Xiaodong Yang.High-beam-quality,5.1 J,108 Hz diode-pumped Nd:YAG rod oscillator-amplifier laser system.Optics Communications.266(2006) 39-43
[27]练文,叶艾.高效率电光调Q固体激光器的实验研究.光学与光电技术.2005,3(6):26-28
[28]李适民,黄维玲.激光器件原理与设计.第二版.北京:国防工业出版社,2005:151-161
[19]李志刚.二极管泵浦固体激光器及放大器的研究:[博士学位论文].华中科技大学,2004
[30]Avizonis P V,Crrotbeck R L.J A P,1966,37:687
[31]沈柯.激光原理教程[M].北京:北京工业大学出版社.1986,95-106.
[32]孟绍贤,谷忠民,莽燕萍.电光开关削波和激光放大过程中的脉冲变窄[J].中国激光.1998,10(25):930-934.
[33]A.Y.Cabezas.G.L.Mcallister.Gain Saturationin Neodymium:Glass Laser Amplifiers[J].J.Appl.Phys.1967,38(9):3487-3491.
[34]范安辅,徐天华.激光技术物理[M].成都:四川大学出版社.1992,288-300.
[35]蓝信钜等.激光技术[M].北京:北京科学出版社.2000,145-170.
[36]余本海.两级串接连续Nd:YAG固体激光器的研究:[硕士学位论文].华中科技大学,2004
[37]杨轶.棒状固体热容激光器谐振腔及其热稳设计:[工学硕士学位论文].国防科学技术大学研究生院,2005