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公开(公告)号：US20190058300A1
公开(公告)日：2019-02-21
申请号：US15764147
申请日：2016-09-20
发明人： Anton FERIN , Valentin FOMIN , Andrey ABRAMOV
IPC分类号： H01S3/00 , H01S3/067 , H01S3/30 , B23K26/064
摘要： A single mode (SM) high power laser system is configured with a laser source outputting a single mode or low mode kW-power light and a passive delivery fiber spliced to an output fiber of the fiber laser source and having a double bottleneck-shaped core. The latter is configured to increase a threshold for nonlinear effects in general and in particular for stimulated Raman scattering (SRS) so that the delivery passive fiber has a fiber length at least twice the length of a delivery passive fiber with a standard uniformly dimensioned core, which may be used with the same laser source, while outputting the kW-power light with an M2 factor less than 2.
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公开(公告)号：US20140362877A1
公开(公告)日：2014-12-11
申请号：US14308407
申请日：2014-06-18
CPC分类号： H01S3/06708 , G02B6/14 , G02B6/2813 , H01S3/06745 , H01S3/06754 , H01S3/0804 , H01S3/094007 , Y10T156/11
摘要： A clad absorber unit is provided on a passive fiber of a high power fiber laser system and operative to trap and remove modes propagating along the waveguide clad of the fiber. The mode absorber is configured with such an optimal length that the clad light may be removed in a localized manner, substantially uniformly removed over the entire length thereof. The absorber removing clad light in a unformed fashion includes a host material impregnated with diffusers.
摘要翻译： 在高功率光纤激光器系统的无源光纤上设置包层吸收单元，用于捕获和去除沿着光纤的波导包层传播的模式。 模式吸收体配置有这样一个最佳长度，使得可以以局部方式去除包层光，在其整个长度上基本均匀地移除。 吸收剂去除包覆光以未成型的方式包括浸渍有扩散器的主体材料。
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