In the yb3 + - doped single or double clad fiber lasers by using few - mode fiber bragg gratings as wavelength reflectors , the linewidth of the output laser is smaller than 0 . 1nm , which shows that such a scheme can produce narrow linewidth laser 最吸引我们的是使用这种光纤光栅做为腔镜组成的掺yb3 +单包层和双包层光纤激光器有着小于0 . 1nm的3db带宽,说明少量模光纤布拉格光栅具有较窄的反射峰。
Some factors related to the trap potential and heating rate are considered , such as the laser detuning , the changing of cavity length , laser power of trapping beam , and the linewidth of laser . 7 ) an ultra - high finesse micro - cavity is established in our lab 6 )对超高精细度微腔内光学偶极阱进行了数值模拟,研究了光场失谐、腔长变化、功率、以及线宽等参数对腔内偶极阱的阱深以及加热率的影响。
Just below threshold , consistel1t to theoretical analysis , there are numbers of comb - like narrow linewidth lights due to resonating of ifltr8 - cavity ase light . novel experimental results of the erbium - doped - fiber ring resonator behaviors operating near threshold are reported in the chapter 首先理论分析了当有源环形腔无注入光,且有源光纤环形腔在阈值以下时,由有源腔内ase输出光表现出的腔输出特性。
Then , on the basis of coupled wave equations , theoretically studies of opo threshold parameters and of the conversion efficiency and of linewidth control are presented . several principles of the optimum design for opo are discussed . the experimental investigations of noncritical phase matching 以耦合波方程为基础,分析和计算了光学参量振荡器的转换效率、抽运阈值、谱线宽度等特性,并在此基础上讨论了如何选择opo的各项参数。
Several key techniques that only exist in polar coordinate have been used in ldw processing . an efficient experiential formulation that indicates the relation between linewidth and laser power corresponding to various radial positions under constant angular velocity is presented based on the definition of exposure 本文在极坐标激光直写光刻技术研究中,解决了极坐标特有的关键技术,制作了同心环分划板,定位精度和线宽达到了设计要求。