980nm Oxide-Confined Vertical Cavity Surface Emitting Laser
980nm氧化物限制的垂直腔面发射激光器(英文)

Top-emitting oxide-confined intra-cavity contact structure 980nm VCSEL is fabricated by low-pressure metal organic chemical-vapor deposition (LP-MOCVD).Self-aligning etching process and selective oxidation are applied for current confinement.Output light power of 10.1mW and slope efficiency of 0.462mW/mA are obtained under room temperature,pulse operation,and injection current of 28mA.The maximum light power is 13.1mW under pulse operation.Output light power of 7.1mW,lasing wavelength of 974nm,and FWHM of 0.6nm are obtained under CW condition.The study of oxide-aperture influence on threshold current and differential resistance shows that lower threshold current can be obtained with a smaller oxide-aperture diameter.