窄线宽激光在光学谐振腔腔长精密测量中的应用

发布时间：2018-05-14 06:42

本文选题：测量 + 窄线宽激光　；参考：《光学学报》2017年01期

【摘要】：提出了一种利用窄线宽激光作为测量光源,对光学谐振腔自由光谱区、腔内共振激光波长进行精密测量而得到光学谐振腔腔长的方法。对光学谐振腔腔长的测量理论进行了严格推导,通过理论模拟对测量条件及结果进行了分析讨论。以自行研制的线宽为1.9Hz、频率不稳定度为1.7×10-14 s-1、中心波长为1550nm的窄线宽激光作为光源,对长度约100mm的光学谐振腔腔长进行了精密测量。对光学谐振腔自由光谱区进行测量,得到其腔长为0.10024407m、精度为22nm;对光学谐振腔腔内共振激光波长进行测量,得到其腔长为0.1002440884m、精度为0.21nm,精度相对提高了2个量级。提出的方法有望促进基础物理研究、材料的物理属性精密测量及光纤传感等领域的发展。
[Abstract]:This paper presents a method to obtain the length of optical resonator by using narrow linewidth laser as the measuring light source to accurately measure the free spectrum region of optical resonator and the wavelength of intracavity resonance laser. The measurement theory of optical cavity length is derived strictly and the measurement conditions and results are analyzed and discussed by theoretical simulation. Using a narrow linewidth laser with a linewidth of 1.9 Hz, a frequency instability of 1.7 脳 10 ~ (-14) s-1 and a center wavelength of 1550nm as a light source, the length of an optical resonator with a length of about 100mm is accurately measured. By measuring the free spectrum region of optical resonator, the cavity length is 0.10024407m and the precision is 22nm.The cavity length is 0.1002440884m, the precision is 0.21nm, and the precision is two orders of magnitude. The proposed method is expected to promote the development of basic physics research, precise measurement of physical properties of materials and optical fiber sensing.
【作者单位】：中国科学院国家授时中心时间频率基准重点实验室;
【基金】：国家自然科学基金委重大科研仪器设备研制专项(61127901) 国家自然科学基金(11273024,61025023);国家自然科学基金青年科学基金(11403031) 中组部“青年拔尖人才支持计划”项目(组厅字[2013]33号) 中科院科技创新“交叉与合作团队”项目(中科院人教字(2012)119号) 中国科学院重点部署项目(KJZD-EW-W02)
【分类号】：TN249

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