Abstract
We present the first demonstration of a vertical cavity surface emitting laser (VCSEL) based on InAs quantum dots (QDs) on InP. A very high density of 10 <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">11</sup> cm <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">-2</sup> per QD layer, and a thin spacing layer of 15 nm are used to enhance the QD modal gain within the VCSEL cavity. Continuous wave (CW) operation is demonstrated at room temperature on optically pumped devices emitting at telecommunication wavelength (1550 nm), being the ground state transition of QDs. A very low threshold of 1.4 mW is obtained, corresponding to a value 6 times smaller than the best threshold we obtained on similar VCSEL structures integrating 1550 nm strained quantum wells. Wavelength tuning experiments have been also conducted due to a wedge cavity design. Laser emission in CW operation has been achieved on a large spectral window: from 1530 nm up to 1573 nm. A stable output polarization state with a polarization ratio exceeding 20 dB is also measured.
Sign-in/Register to access full text options 
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.
