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...
It begins with a review of basic laser properties and moves to definitions and implications of the various standard beam quality metrics such as [i]M[/i][sup]2[/sup], power in the bucket, brightness, beam parameter product, and Strehl ratio. The practical aspects of beam metrology, which...
As such, any variation of the interaction conditions between the laser-accelerated proton beam and the irradiated material sample (e.g. changing the number of protons per unit of irradiated surface, varying the distance between the particle source and the sample or tuning the length of the laser...
As a result of the fixed irradiating laser beam, the samples had a lens-like shape. The thickness of the obtained samples was measured at their center (maximum thickness). The melting depth was determined both as a function of the laser power output at a given time of irradiation and as ...
scanning the field of measurement with the intensity-modulated laser beam to provide intensity-modulated reflected light from the parcel in the field of measurement with an optical scanning system having a scanning mirror for line scanning; processing the intensity-modulated light reflected from the ...
High-beam-quality High-power Nanosecond Laser Bulletin of Chinese Academy of Sciences , 35 , 37 -37 (2020) ChangSheng YANG, ShanHui XU, Jun ZHOU, Bing HE, YiFeng YANG, HongWei QU, ZhiDe ZHAO, ZhongMin YANG Research advance on the key technology of high-power fiber laser materials and...
We describe how a direct combination of an axicon and a lens can represent a simple and efficient beam-shaping solution for laser material processing applications. We produce high-angle pseudo-Bessel micro-beams at 1550 nm, which would be difficult to produce by other methods. Combined with appr...
The size of the laser spot affects the quality and precision of the measurement. A situation often occurs in which the footprint of a laser beam on a surface covers an area including two or more objects [48]. These objects can be in one plane or at different distances. The reflected ene...
The measured electrical noise (𝑉𝑒𝑁VNe) was reduced to 0.15 μV/√Hz; coherent acoustic background noise; this noise can arise due to laser beam modulation. The LPAS system effectively addressed this type of noise during the measurements; coherent background signal arising from the ...
BWA-CAMTheBWA-CAMLaserBeamAnalyzersystemandsoftwareenables“real-time”laserbeammeasurement,analysisandmonitoringoflowtoveryhighpowerCWandpulsedlasers.ThesystemdesignisbasedontheinternationalstandardsISO11146andISO13694whichrelatetolasersandlaserrelatedequipmentandlaserbeamspatialmetrics.Ineverylaserapplication,thelaser...