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Multiple wavelength, surface emitting laser with broad bandwidth Distributed Bragg Reflectors

机译:具有宽带宽的多波长,表面发射激光器分布式布拉格反射器

摘要

A multiple wavelength surface emitting laser (10) has a first (14) and second (32) broad bandwidth distributed Bragg reflector (DBR) which reflect light at multiple wavelengths. The surface emitting laser structure comprises at least two cavities with each cavity containing one or more active layers (18, 26) for respectively emitting light at different wavelengths. In a first preferred embodiment, a first cavity contains only a first active layer (18) for emitting light of a first wavelength, a second cavity contains only a second active layer (26) for emitting light of a second wavelength, a third cavity contains only a third active layer for emitting light of a third wavelength, and a fourth cavity contains only a fourth active layer for emitting light of a fourth wavelength. In a preferred embodiment for a dual wavelength surface emitting laser, a first cavity contains a first active layer for emitting light of a first wavelength and a second cavity contains the first and second active layers and emits only light of the second longer wavelength. The second layer has been eliminated in the first cavity by etching before completing the epitaxial growth.
机译:多波长表面发射激光器(10)具有第一(14)和第二(32)宽带宽分布的布拉格反射器(DBR),它们反射多个波长的光。该表面发射激光器结构包括至少两个腔,每个腔包含一个或多个用于分别发射不同波长的光的有源层(18、26)。在第一优选实施例中,第一腔仅包含用于发射第一波长的光的第一有源层(18),第二腔仅包含用于发射第二波长的光的第二有源层(26),第三腔包含仅第三有源层用于发射第三波长的光,而第四腔仅包含第四有源层用于发射第四波长的光。在双波长表面发射激光器的优选实施例中,第一腔包含用于发射第一波长的光的第一有源层,而第二腔包含第一和第二有源层,并且仅发射第二较长波长的光。在完成外延生长之前,已经通过蚀刻在第一腔中消除了第二层。

著录项

  • 公开/公告号EP0817340A1

    专利类型

  • 公开/公告日1998-01-07

    原文格式PDF

  • 申请/专利权人 XEROX CORPORATION;

    申请/专利号EP19970304782

  • 发明设计人 PAOLI THOMAS L.;

    申请日1997-07-01

  • 分类号H01S3/25;H01S3/085;

  • 国家 EP

  • 入库时间 2022-08-22 02:49:54

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