第 42 卷 第 2 期
2015 年 2 月
Vol. 42, No. 2
February, 2015
中 国 激 光
CHINESE JOURNAL OF LASERS
0207001-
荧光显微镜中蓝光激光器基频腔面膜的研制
付秀华 吴冠岐
*
刘冬梅 李松岩 张 静 董 力
长春理工大学光学工程学院, 吉林 长春 130022
摘要 蓝光激光器在生物工程、激光显示屏、激光医疗以及侦查通讯等众多领域都有着重要应用,而谐振腔作为激光
器的重要组成部分,如何合理有效地激发出蓝光更是研究的重点。针对蓝光激光器的使用要求,以 Nd:YAG 作为基底,
Ta
2
O
5
和 SiO
2
分别作为高低折射率材料,利用电子束真空镀膜设备,双离子源辅助沉积的方法进行谐振腔面膜的制备。
借助膜系设计软件对实验进行模拟分析,优化改善电场分布,减小激光对薄膜的损伤,详细地叙述了极值法累积误差
产生的原因,以及镀膜材料的色散引起的短波区和长波区的监控差异,通过分析折射率所引起的光学厚度变化,调整
修正因子,最终制备出了光谱性能好,吸收小,化学性能稳定的滤光膜,满足蓝光激光器的使用要求。
关键词 薄膜; 膜系设计; Nd:YAG; 蓝光激光器; 离子源辅助沉积
中图分类号 O484.4 文献标识码 A
doi: 10.3788/CJL201542.0207001
Study and Fabrication of Blue Laser Fundamental Cavity Film in
Fluorescence Microscope
Fu Xiuhua Wu Guanqi Liu Dongmei Li Songyan Zhang Jing Dong Li
School of Optoelectronic Engineering,Changchun University of Science and Thchnology,
Changchun, Jilin 130022, China
Abstract The blue laser has significant meaning in the application fields of biological engineering, laser
screen, laser medical technology, investigation, communication and many fields of science. The resonant
cavity is an important component of laser, how to make it work effectively turns to be a major subject. Aimed
at the operating requirements of blue laser cavity surface film, based on Nd:YVO
4
, Ta
2
O
5
、SiO
2
are chosen as
coating materials. The films are prepared by vacuum coating equipment and double ion beam assist deposition.
Through technics feedback analysis to the test result by several simulation experiments, the electric field
distribution is optimized, which can decrease the damage of thin- film from laser. The reason of extremum
method cumulative error is described, as well as reasons of control differences of short wavelength range and
long wavelength range. By analysising optical thickness caused by refractive index, adjust the tool factor. The
filter coating with well- optical performance, low- absorb, and steady- chemical properties is prepared, which
satisfy the operating requirements of blue laser.
Key words thin films; film system design; Nd:YAG; blue laser; ion beam assisted deposition
OCIS codes 310.6860; 310.6845; 140.3580
收稿日期: 2014-07-29; 收到修改稿日期: 2014-09-12
基金项目: 国家自然科学基金(60977052)、省部产学研结合项目(2010A090200006)
作者简介: 付秀华(1963—),女,博士,教授,主要从事光学薄膜技术和光学制造技术等方面的研究。E-mail: goptics@126.com
* 通信联系人。E-mail: wu_guanqi@126.com
1 引 言
荧光显微镜主要是由配备透射光及表面荧光 装置的 Hg 灯光源、激光二极管(LD)抽运激光器、电荷耦合
元件(CCD)以及一些电子控制部分来组成
[1]
。将蓝色荧光蛋白作为活细胞内蛋白质的标记分子,经激光器倍
频出的蓝光作为 激发源来 激发活细胞,利用荧光 共振的方法
[2-3]
,就可 以清楚地研究活细胞内蛋 白质的相互
作用了
[4]
。
1