J4 ›› 2010, Vol. 27 ›› Issue (6): 688-692.

• 激光技术与器件 • 上一篇    下一篇

2.94um Er:YAG电光调Q激光器及应用研究

马明俊 叶兵 麻晓敏   

  1. 1合肥工业大学电子科学与应用物理学院,安徽 合肥 230009; 
    2 解放军炮兵学院物理教研室,安徽 合肥 230031
  • 收稿日期:2009-12-28 修回日期:2010-01-23 出版日期:2010-11-28 发布日期:2010-11-19
  • 通讯作者: 叶兵(1961— ),男,安徽人,教授,研究生导师,主要从事激光技术应用研究。 E-mail:yb0430@hfut.edu.cn
  • 作者简介:马明俊(1978— ),男,重庆人,硕士研究生,主要从事激光器及应用研究。E-mail:junmabch78@sina.com.

Electro-optically Q-switched 2.94um Er:YAG laser and its applications

Ma Ming-jun,Ye Bing,Ma Xiao-min   

  1. 1 School of Electronic Science and Applied Physics,Hefei University of Technology, Hefei 230009, China; 
    2 Physics Teaching Research Section,Artillery Academy, Hefei 230031,China
  • Received:2009-12-28 Revised:2010-01-23 Published:2010-11-28 Online:2010-11-19

摘要:

随着2.94 激光在医学中的应用日益广泛,控制工作激光参数提高医疗安全性能显得尤为重要,因此对工作的激光进行调Q是很有必要的。文中介绍了利用双布儒斯特角切割的LiNbO3晶体作为电光Q开关的Er:YAG调Q激光器,在工作频率5Hz,脉冲泵浦能量92J条件下,获得了脉宽103 ~110ns,能量达到87mJ的调Q脉冲激光输出。并分别在静态和调Q模式下对龋牙进行了窝洞制样,利用扫描电子显微镜对样本扫描,对比显示调Q激光制样的效果更好。

关键词: 激光技术, Er:YAG激光器, 电光Q开关, LiNbO3晶体, 窝洞制备

Abstract:

With the extensive application of 2.94 laser in medicine, the control of laser parameters are particularly important to improve medical safety, therefore, Q-switched operation of  Er:YAG laser is necessary. With LiNbO3 crystal cut at Brewster’s angle acted as electro-optical Q-switching of the Er:YAG laser, at 5Hz repetition rate and pump energy of 92J, giant pulses of 103 ~ 110ns duration and 87mJ energy were obtained. A free-running and Q-switched pulsed laser was used for the cavity preparation experiments of the dentine respectively. Using scanning electron microscopy, the samples showed that Q-switched laser is more efficient.

Key words: laser techniques, Er:YAG laser, electro-optical Q-switching, LiNbO3 crystal, cavity preparation

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