激光与光电子学进展, 2015, 52 (12): 121406, 网络出版: 2015-12-08  

一体化Y 型腔正交偏振氦氖激光器的基本特性研究

Characters of Orthogonal Polarized He-Ne Laser with Integrated Y-shaped Cavity Research
作者单位
国防科学技术大学光电科学与工程学院, 湖南 长沙 410073
摘要
为了提高Y 型腔正交偏振氦氖激光器的输出光特性,对激光器的腔体结构、增益区光路以及偏振分光片的加工工艺进行改进,研制出了新型一体化Y 型腔正交偏振氦氖激光器。介绍了该激光器的基本结构和工作原理,实验测试了激光器的输出光模式、输出光功率、频差闭锁特性和频差稳定性。与先前分立式结构的Y 型腔正交偏振激光器相比较,详细分析了改进后的激光器的优势,特别指出了其在频差稳定性方面的提升。实验结果表明,利用一体化Y 型腔结构可以实现激光器的频率分裂;通过调节P 子腔反射镜上压电陶瓷的电压,可以线性调节激光器的输出频差;相比于分立式Y 型腔激光器,一体化Y 型腔正交偏振氦氖激光器的输出光功率提高至647 μW,频差闭锁阈值降低至12 MHz,频差范围提高至12~1038 MHz,频差稳定性提高至1.2×105 Hz。
Abstract
To improve the laser performance, an orthogonal polarized He-Ne laser with integrated Y-shaped cavity is designed after modifying the cavity structure, the gain region and the processing technology of polarizing beam splitter. Cavity structures and operating principles of the laser are described, and the mode, power, lock-in features, frequency difference stability of the laser are measured. Detailed performance enhancements are shown, especially the frequency difference stability. Comparisons are presented to traditional laser with detached Y-shaped cavity. The results show that the frequency difference between two cavities can be linearly adjusted by changing the voltage of the piezoelectric transducer in the P-cavity. Compared with the detached Y-shaped cavity laser, the output power of the integrated laser is improved to 647 μW, the lock-in frequency difference is reduced to 12 MHz, the range of frequency difference is improved to 12~1038 MHz, while the frequency difference stability is improved to 1.2×105 Hz.

龚梦帆, 肖光宗, 傅杨颖, 张斌. 一体化Y 型腔正交偏振氦氖激光器的基本特性研究[J]. 激光与光电子学进展, 2015, 52(12): 121406. Gong Mengfan, Xiao Guangzong, Fu Yangying, Zhang Bin. Characters of Orthogonal Polarized He-Ne Laser with Integrated Y-shaped Cavity Research[J]. Laser & Optoelectronics Progress, 2015, 52(12): 121406.

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