Abstract
Folded-cavity surface-emitting InGaAs-GaAs lasers (FCSELs) that employ high-quality internal 45/spl deg/ deflectors are demonstrated with low-threshold current density and high efficiency. A simplified process involving a stop etch to position the surface emitting output mirror close to the waveguide and ion-beam-etching (IBE) to form the 45/spl deg/ deflecting mirror is presented. FCSELs (cavity length 800 /spl mu/m) with two 45/spl deg/ deflectors, are obtained with threshold current density as low as 112.5 A/cm/sup 2/ and surface-emission external quantum efficiency as high as 65% (0.82 W/A). The additional loss contributed by the folded-cavity design is estimated as 4.2 cm/sup -1/. >
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
