内容简介 《激光光束质量度量》是作者长期从事激光光束质量度量与评价实践的经验总结,系统介绍了M2、桶中功率、亮度、光束参数乘积和Strehl比等不同标准光束质量度量方法的定义和内涵,并重点针对如何搭建自己的M2测量设备、如何设计光束质量指标、光束质量指标的相互转换等内容进行了深入剖析,提出了激光光束质量度量的注意事...
The radius of the transverse focal spot on the target sample surface was measured by the technique described in51. Measuring technique provides information about the actual laser beam spot size despite the beam quality factor M2. It is valid for a Gaussian beam with a good beam qualify factor...
When modeling laser perforation processes with beam radii in the range of a few centimeters, thermal aspects such as temperature-dependent heat capacity, conductivity and energy input are of particular importance. Perforation performance and its dependence on process and material parameters such as beam ...
Through the sequential extraction of received speckle information, the speckle metrics for estimating the variation of focusing spot size on a remote diffuse target are obtained. Based on the simulation, we will give some discussions about the SPSE......
Therefore, alternative laser beam sources and processes have to be established, to avoid these negative effects on the weld seam quality. Laser beam sources in the visible wavelength range (VIS) prove to be an alternative due to an increased absorption of the laser energy in copper-based alloys...
Fiber lasers feature good beam quality, high efficiency, compact structure, and enable to be tuned extensively and work efficiently from continuous-wave operation to ultrashort optical pulses [1,2], from low power to high power schemes [3,4,5], which has been widely applied in nonlinear micro...
36 telemetry Dynamic dispatching library for metrics and instrumentations. beam-telemetry 872 37 syn A scalable global Process Registry and Process Group manager for Erlang and Elixir. ostinelli 632 38 clojerl Clojure for the Erlang VM (unofficial) clojerl 1656 39 proper PropEr: a QuickCheck-inspir...
At optical peak powers of 20 GW, exceeding previous limits of solid-based acousto-optic modulation by about three orders of magnitude, we reach a deflection efficiency greater than 50% while preserving excellent beam quality. Our approach is not limited to laser pulse deflection; gas-phase ...
The design of the microscopic, ambient-air scanning CEP probe needs to satisfy two aspects: first, the active volume that is sensitive to the CEP needs to be small enough to allow resolution of the laser beam; second, the proportionality of the acquired phase being a function of CEP needs ...
内容简介 《激光光束质量度量》是作者长期从事激光光束质量度量与评价实践的经验总结,系统介绍了M2、桶中功率、亮度、光束参数乘积和Strehl比等不同标准光束质量度量方法的定义和内涵,并重点针对如何搭建自己的M2测量设备、如何设计光束质量指标、光束质量指标的相互转换等内容进行了深入剖析,提出了激光光束质量度量的注意事...