Semiconductor laser with integrated optical elements

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	Semiconductor laser with integrated optical elements
其他题名	Semiconductor laser with integrated optical elements
	SCIFRES, DONALD R.; STREIFER, WILLIAM
	1989-03-21
专利权人	JDS UNIPHASE CORPORATION
公开日期	1989-03-21
授权国家	美国
专利类型	授权发明
摘要	Lasers and laser arrays having various optical elements, such as lenses, apertures, prisms, etalons and phase plates, integrated within the resonant optical cavity of the laser. The optical elements are created by introducing a lateral geometric contour in boundaries of refractive index changes thereby causing a change in shape of phase fronts of lightwaves propagating in the laser cavity in a manner analogous to optical elements. Boundaries may be defined between an active region and transparent window regions or may be formed in other layers with which lightwaves interact, such as the layers bounding the active region. Curved boundaries produce convergent or divergent lenses. Absorbing regions may bound window regions to produce apertures for lateral mode control. A periodic step shaped boundary can be used to shift the phase of lightwaves propagating in some laser array waveguides relative to lightwaves in others of the waveguides in order to cause beam emission of a desired supermode. Fresnel lenses, prisms and etalons can also be integrated within the laser.
其他摘要	具有各种光学元件的激光器和激光器阵列，例如透镜，孔，棱镜，标准具和相位板，集成在激光器的谐振光学腔内。通过在折射率变化的边界中引入横向几何轮廓来产生光学元件，从而引起以类似于光学元件的方式在激光腔中传播的光波的相位前沿的形状的变化。边界可以限定在有源区域和透明窗口区域之间，或者可以形成在与光波相互作用的其他层中，例如限定有源区域的层。弯曲的边界产生会聚或发散透镜。吸收区域可以限制窗口区域以产生用于横向模式控制的孔径。周期性阶梯形边界可用于使在一些激光器阵列波导中传播的光波的相位相对于其他波导中的光波移动，以便引起所需超模的光束发射。菲涅耳透镜，棱镜和标准具也可以集成在激光器内。
主权项	A semiconductor laser having at least one optical element integrated therein comprising, a plurality of contiguous semiconductor layers on a substrate, the layers and substrate forming a semiconductor body, pumped portions of at least one of said layers forming an active region for lightwave generation, means for injecting current into said active region to produce said lightwaves, means for obtaining optical feedback of said lightwaves to achieve lasing operation, said feedback means defining a resonant cavity in the semiconductor body, and means within the semiconductor body for optical waveguiding of said lightwaves, said optical waveguiding means having one or more boundaries within the semiconductor body with which said lightwaves interact, the boundaries being characterized by a refractive index change thereat, at least portions of said boundaries being characterized by a lateral geometric contour corresponding to a surface of a selected optical element so as to cause a change in shape of phase fronts of lightwaves propagating across said boundary portions in a manner analogous to the change produced by said optical element, at least one of said boundaries being not parallel to said feedback means.
申请日期	1987-05-20
专利号	US4815084
专利状态	失效
申请号	US07/053092
公开（公告）号	US4815084
IPC 分类号	H01S3/00 \| H01S5/40 \| H01S5/026 \| H01S5/16 \| H01S5/00 \| H01S5/10 \| H01S5/20 \| H01S3/19
专利代理人	-
代理机构	SCHNECK, THOMAS
文献类型	专利
条目标识符	http://ir.opt.ac.cn/handle/181661/44553
专题	半导体激光器专利数据库
作者单位	JDS UNIPHASE CORPORATION
推荐引用方式 GB/T 7714	SCIFRES, DONALD R.,STREIFER, WILLIAM. Semiconductor laser with integrated optical elements. US4815084[P]. 1989-03-21.

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