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用提拉法生长了（1.5 at.%）Nd3+：Y3Sc2Al3O12（YSAG）激光晶体，摇摆曲线表明晶体结晶质量优良.测量了该晶体的吸收和发光光谱，表明其适合成熟的808 nm激光二极管（LD）抽运，其4F3/24I11/2跃迁最强发射波长为1059 nm，发射截面为1.0310-19 cm2，同时其激光上能级寿命为253 s，表明Nd：YSAG具有和Nd：YAG相近的效率，但其激光上能级寿命比Nd：YAG长约20 s.以LD抽运2 mm2 mm6 mm Nd：YSAG激光棒，激光阈值为0.85 W，最高输出功率为1.1 W，激光斜效率为21.1%，光-光转化效率为18.3%.综合表明Nd：YSAG单晶作为激光性能优良的全固态激光材料，更适合全固态调Q激光输出.In order to solve the problem of low segregation coefficient of Nd3+ ions in YAG crystal, Sc3+ ions are used to replace some Al3+ ions in YAG, so that the YAG cell becomes bigger, thereby the segregation coefficient of Nd3+ ion increases. In this paper, the spectra and laser characteristics of Nd:YSAG single crystal are studied. The (1.5 at.%) Nd3+:Y3Sc2Al3O12 (YSAG) laser crystal is grown by Czochralski method, and X-ray rocking curve shows that the crystal quality is good. The concentration of ions in Nd:YSAG is measured by an electronic probe. The segregation coefficient of Nd3+ ion is calculated to be 0.35, which is approximately twice as much as that of Nd3+ in YAG. The absorption and emission spectra are measured, which indicates that it can be pumped by an 808 nm-laser diode (LD). The strongest emission from the transition 4F3/24I11/2 of Nd:YSAG peaks at 1059 nm with an emission cross section of 1.0310-19 cm2, and the lifetime of 4F3/2 is about 253 s, which indicates that Nd:YSAG has roughly an efficiency equal to that of Nd:YAG, but the laser upper level lifetime is longer than that of Nd:YAG, which is more favorable for Q-switched laser operation. The 808 nm-LD is used to pump Nd:YSAG rod of 2 mm2 mm6 mm, the laser operation with a threshold of 0.85 W and a maximum output power of 1.1 W is realized:the laser slope efficiency is 21.1%, and the optical conversion efficiency is 18.3%. All of the above results show that Nd:YSAG single crystal is a good solid state laser material, which is more favorable for Q-switched laser operation.
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Keywords:
- Nd:YSAG /
- absorption /
- fluorescence /
- laser diode pumped solid-state laser
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[2] Zhao X 2006 M. S. Thesis (Tianjin: Tianjin University) (in Chinese) [赵欣 2006 硕士学位论文 (天津: 天津大学)]
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[5] Saikawa J, Sato Y, Taira T, Ikesue A 2007 Opt. Mater. 29 1283
[6] Sato Y, Saikawa J, Taira T, Ikesue A 2007 Opt. Mater. 29 1277
[7] Gheorghe C, Lupei A, Hău S, Voicu F, Gheorghe L, Vlaicu A M 2016 J. Alloys Compd. 683 547
[8] Feng T, Shi J L, Jiang D Y 2009 Ceram. Int. 35 427
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[10] Feng T, Cai H, Qi Y F, Jiang D Y, Zhou J, Lou Q H, Shi J L 2008 J. Inorg. Mater. 23 1041 (in Chinese) [冯涛, 蔡虹, 漆云凤, 蒋丹宇, 周军, 楼棋洪, 施剑林 2008 无机材料报 23 1041]
[11] Lutts G B, Denisov A L, Zharikov E V, Zagumennyi A I, Kozlikin S N, Lavrishchev S V, Samoylova S A 1990 Opt. Quant. Electron. 22 S269
[12] Jiang B X, Zhao Z W, Xu X D, Song P X, Wang X D, Xu J, Deng P Z 2006 J. Synthetic Crystals 35 757
[13] Zhao S Z, Chen L, Zhang L, Zhang F J 2004 Acta Photon. Sin. 33 133 (in Chinese) [赵圣之, 陈磊, 张路, 张福军 2004 光子学报 33 133]
[14] Peng F, Zhang Q L, Wang X F, Zhang H L, Ding S J, Liu W P, Luo J Q, Sun D L, Sun G H 2016 Acta Phys. Sin. 65 014211 (in Chinese) [彭方, 张庆礼, 王小飞, 张会丽, 丁守军, 刘文鹏, 罗建乔, 孙敦陆, 孙贵花 2016 物理学报 65 014211]
[15] Mao Y L, Qiu H W, Xu J, Deng P Z, Gan F X 2001 Acta Opt.Sin. 21 1264 (in Chinese) [毛艳丽, 邱宏伟, 徐军, 邓佩珍, 干福熹 2001 光学学报 21 1264]
[16] Chen J K, Sun D L, Luo J Q, Xiao J Z, Kang H X, Zhang H L, Cheng M J, Zhang Q L, Yin S T 2013 Opt. Lett. 38 1218
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[1] Ye B Q, Ma Z L, Wang M Q 1988 Acta Phys. Sin. 37 416 (in Chinese) [叶碧青, 马忠林, 王明琪 1988 物理学报 37 416]
[2] Zhao X 2006 M. S. Thesis (Tianjin: Tianjin University) (in Chinese) [赵欣 2006 硕士学位论文 (天津: 天津大学)]
[3] Cornacchia F, Simura R, Toncelli A, Tonelli M, Yoshikawa A, Fukuda T 2007 Opt. Mater. 30 135
[4] Allik T H, Morrison C A, Gruber J B, Kokta M R 1990 Phys. Rev. B 41 21
[5] Saikawa J, Sato Y, Taira T, Ikesue A 2007 Opt. Mater. 29 1283
[6] Sato Y, Saikawa J, Taira T, Ikesue A 2007 Opt. Mater. 29 1277
[7] Gheorghe C, Lupei A, Hău S, Voicu F, Gheorghe L, Vlaicu A M 2016 J. Alloys Compd. 683 547
[8] Feng T, Shi J L, Jiang D Y 2009 Ceram. Int. 35 427
[9] Feng T, Shi J L, Jiang D Y 2008 J. Euro. Ceram. Soc. 28 2539
[10] Feng T, Cai H, Qi Y F, Jiang D Y, Zhou J, Lou Q H, Shi J L 2008 J. Inorg. Mater. 23 1041 (in Chinese) [冯涛, 蔡虹, 漆云凤, 蒋丹宇, 周军, 楼棋洪, 施剑林 2008 无机材料报 23 1041]
[11] Lutts G B, Denisov A L, Zharikov E V, Zagumennyi A I, Kozlikin S N, Lavrishchev S V, Samoylova S A 1990 Opt. Quant. Electron. 22 S269
[12] Jiang B X, Zhao Z W, Xu X D, Song P X, Wang X D, Xu J, Deng P Z 2006 J. Synthetic Crystals 35 757
[13] Zhao S Z, Chen L, Zhang L, Zhang F J 2004 Acta Photon. Sin. 33 133 (in Chinese) [赵圣之, 陈磊, 张路, 张福军 2004 光子学报 33 133]
[14] Peng F, Zhang Q L, Wang X F, Zhang H L, Ding S J, Liu W P, Luo J Q, Sun D L, Sun G H 2016 Acta Phys. Sin. 65 014211 (in Chinese) [彭方, 张庆礼, 王小飞, 张会丽, 丁守军, 刘文鹏, 罗建乔, 孙敦陆, 孙贵花 2016 物理学报 65 014211]
[15] Mao Y L, Qiu H W, Xu J, Deng P Z, Gan F X 2001 Acta Opt.Sin. 21 1264 (in Chinese) [毛艳丽, 邱宏伟, 徐军, 邓佩珍, 干福熹 2001 光学学报 21 1264]
[16] Chen J K, Sun D L, Luo J Q, Xiao J Z, Kang H X, Zhang H L, Cheng M J, Zhang Q L, Yin S T 2013 Opt. Lett. 38 1218
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