A linewidth stabilizing method for defocusing laser direct writing is proposed for further improvement of line quality of diffractive optical elements.
为了提高激光直写加工衍射光学元件时的线条质量，提出一种离焦激光直写的线宽稳定方法。
2
The reflectivity of optical mirrors can be obtained by measuring linewidth of transmission spectrum of optical cavity and the fineness of Fabry-Perot (F-P) cavity.
谐振腔精细度法是通过测量光学谐振腔透射谱线宽度来实现对光学反射镜反射率的测定。
3
In experiment, we research the optical spectrum and analyze the influence of driven current noise on optical spectrum linewidth of tunable DBR laser.