Apparatus and method for controlling the spatial beam profile of laser radiation

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	Apparatus and method for controlling the spatial beam profile of laser radiation
其他题名	Apparatus and method for controlling the spatial beam profile of laser radiation
	CODEMARD, CHRISTOPHE ANDRÉ; ZERVAS, MIKHAIL NICKOLAOS
	2019-08-08
专利权人	SPI LASERS UK LIMITED
公开日期	2019-08-08
授权国家	世界知识产权组织
专利类型	发明申请
摘要	An apparatus for controlling the spatial beam profile (1) of laser radiation (2), which apparatus comprises a laser (3) and a resonant fibre (4), wherein: the laser (3) is connected to the resonant fibre (4); the resonant fibre (4) comprises a first core (5), a cladding (6) and a waveguide structure (7); the first core (5) supports a fundamental mode (8) at a first wavelength (9) and at a second wavelength (10); the waveguide structure (7) supports a mode (13) at the first wavelength (9) and at the second wavelength (10); the waveguide structure (7) is positioned such that the fundamental mode (8) supported by the first core (5) overlaps the waveguide structure (7) at the first wavelength (9); the waveguide structure (7) is such that the fundamental mode (8) couples between the first core (5) and the waveguide structure (7) at the first wavelength (9); the resonant fibre 4 is defined by a length (11); the length (11) is such that the proportion of the laser radiation (2) that is emitted from the first core (5) compared to the laser radiation (2) emitted from the waveguide structure (7) is different at the first wavelength (9) compared to the second wavelength (10); the spatial beam profile (1) of the laser radiation (2) is determined by the proportion of the laser radiation (2) that is emitted from the first core (5); the laser (3) is selected such that its output wavelength (12) is able to be changed from the first wavelength (9) to the second wavelength (10), thereby enabling the spatial beam profile (1) to be controlled.
其他摘要	一种用于控制激光辐射（2）的空间光束轮廓（1）的装置，该装置包括激光器（3）和谐振光纤（4），其中：激光器（3）连接到谐振光纤（4） ;谐振光纤（4）包括第一芯（5），包层（6）和波导结构（7）;第一芯（5）支持第一波长（9）和第二波长（10）的基模（8）;波导结构（7）支持第一波长（9）和第二波长（10）的模式（13）;波导结构（7）定位成使得由第一芯（5）支撑的基模（8）在第一波长（9）处与波导结构（7）重叠;波导结构（7）使得基模（8）以第一波长（9）耦合在第一纤芯（5）和波导结构（7）之间;谐振光纤4由长度（11）限定;长度（11）使得从第一芯（5）发射的激光辐射（2）与从波导结构（7）发射的激光辐射（2）相比在第一波长处的比例不同（ 9）与第二波长（10）相比;激光辐射（2）的空间光束轮廓（1）由从第一芯（5）发射的激光辐射（2）的比例确定;选择激光器（3）使得其输出波长（12）能够从第一波长（9）改变到第二波长（10），从而能够控制空间光束轮廓（1）。
主权项	Apparatus for controlling the spatial beam profile of laser radiation, which apparatus comprises a laser and a resonant fibre, wherein: • the laser is connected to the resonant fibre; • the resonant fibre comprises a first core, a cladding and a waveguide structure; • the first core supports a fundamental mode at a first wavelength and at a second wavelength; • the waveguide structure supports a mode at the first wavelength and at the second wavelength; • the waveguide structure is positioned such that the fundamental mode supported by the first core overlaps the waveguide structure at the first wavelength; • the waveguide structure is such that the fundamental mode couples between the first core and the waveguide structure at the first wavelength; • the resonant fibre is defined by a length; • the length is such that the proportion of laser radiation that is emitted from the first core compared to the laser radiation emitted from the waveguide structure is different at the first wavelength compared to the second wavelength; • the spatial beam profile of the laser radiation is determined by the proportion of the laser radiation that is emitted from the first core; and • the laser is such that its output wavelength is able to be changed from the first wavelength to the second wavelength, thereby enabling the spatial beam profile to be controlled.
申请日期	2019-01-28
专利号	WO2019150064A1
专利状态	未确认
申请号	PCT/GB2019/000010
公开（公告）号	WO2019150064A1
IPC 分类号	B23K26/073 \| G02B6/02 \| G02B27/09 \| G02B6/036 \| G02B6/14 \| B23K26/06
专利代理人	JONES, GRAHAM HENRY
代理机构	-
文献类型	专利
条目标识符	http://ir.opt.ac.cn/handle/181661/54946
专题	半导体激光器专利数据库
作者单位	SPI LASERS UK LIMITED
推荐引用方式 GB/T 7714	CODEMARD, CHRISTOPHE ANDRÉ,ZERVAS, MIKHAIL NICKOLAOS. Apparatus and method for controlling the spatial beam profile of laser radiation. WO2019150064A1[P]. 2019-08-08.