Electrically pumped quantum post vertical cavity surface emitting lasers

Hyochul Kim, Matthew T. Rakher, Dirk Bouwmeester, Pierre M. Petroff
2009 Applied Physics Letters  
We demonstrate low threshold electrically pumped lasing in oxide apertured vertical cavity surface emitting lasers with quantum posts ͑QPs͒ as the active medium. A lasing threshold current as low as 12 A is achieved at 7 K and room temperature continuous wave lasing is also demonstrated in the cavities with quality factors of ϳ10 000. At low temperature, the QP devices show remarkably lower lasing current thresholds compared to equivalent quantum dot devices.
doi:10.1063/1.3112578 fatcat:enebv46skzb3lnyad3m7nz4fqa