System of locking frequency and phase for arrangement of lasers

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	System of locking frequency and phase for arrangement of lasers
其他题名	System of locking frequency and phase for arrangement of lasers
	POCHI EE YAA
	1987-10-29
专利权人	ROCKWELL INTERNATL CORP
公开日期	1987-10-29
授权国家	日本
专利类型	发明申请
摘要	A system and method are described for establishing a common operating frequency and phase for the lasers in a two-dimensional array, each of which has an actual frequency which deviates from a common nominal frequency. A waveguide structure is placed in the path of the beams emitted from the various lasers, and a plurality of optical gratings are provided in the waveguide in alignment with the laser beams to deflect portions of the beams into propagation along the waveguide and into cross-coupling with the other lasers in the array. The periodic gratings are characterized by grating periods substantially equal to lambda /n1, and the thickness of the waveguide core is at least equal to approximately lambda /(4 2ROOT n22-n32), where lambda is the wavelength of the guided mode, n1 is the effective refractive index for the guided mode, and n2 and n3 are the refractive indices for the waveguide core and substrate, respectively. Two-dimensional coupling is achieved either by waveguide coupling in one direction and evanescent coupling in the other direction, or by a pair of gratings for each laser beam at angles to each other to produce waveguide coupling in both directions.
其他摘要	描述了一种用于在二维阵列中建立激光器的共同工作频率和相位的系统和方法，每个阵列具有偏离公共标称频率的实际频率。波导结构放置在从各种激光器发射的光束的路径中，并且多个光学光栅设置在波导中与激光束对准，以使光束的一部分偏转成沿波导传播并进入交叉耦合。与阵列中的其他激光器。周期光栅的特征在于光栅周期基本上等于λ/ n1，波导芯的厚度至少等于λ/（4 2ROOT n22-n32），其中λ是导模的波长，n1是导模的有效折射率，n2和n3分别是波导芯和基板的折射率。通过在一个方向上的波导耦合和在另一个方向上的渐逝耦合，或者通过彼此成角度的每个激光束的一对光栅来实现二维耦合，以在两个方向上产生波导耦合。
主权项	-
申请日期	1987-02-05
专利号	JP1987248284A
专利状态	失效
申请号	JP1987025556
公开（公告）号	JP1987248284A
IPC 分类号	H01S3/23 \| H01S3/06 \| H01S5/00 \| H01S5/10 \| H01S5/14 \| H01S5/18 \| H01S5/183 \| H01S5/40 \| H01S5/42 \| H01S3/18
专利代理人	-
代理机构	-
文献类型	专利
条目标识符	http://ir.opt.ac.cn/handle/181661/64739
专题	半导体激光器专利数据库
作者单位	ROCKWELL INTERNATL CORP
推荐引用方式 GB/T 7714	POCHI EE YAA. System of locking frequency and phase for arrangement of lasers. JP1987248284A[P]. 1987-10-29.

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