Folded-cavity surface-emitting InGaAs-GaAs lasers with low-threshold current density and high efficiency
- 1 October 1995
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Photonics Technology Letters
- Vol. 7 (10) , 1104-1106
- https://doi.org/10.1109/68.466557
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/.Keywords
This publication has 9 references indexed in Scilit:
- Analysis of nonplanar wave propagation through multilayered Bragg reflectors for folded cavity and vertical cavity surface emitting laser structuresIEEE Journal of Quantum Electronics, 1995
- 1.3-/spl mu/m wavelength, InGaAsP-InP folded-cavity surface-emitting lasers grown by gas-source molecular-beam epitaxyIEEE Photonics Technology Letters, 1994
- CW operation of monolithic arrays of surface-emitting folded-cavity InGaAs/AlGaAs diode lasersIEEE Photonics Technology Letters, 1993
- Low threshold InGaAs/GaAs 45 degrees folded cavity surface-emitting laser grown on structured substratesIEEE Photonics Technology Letters, 1993
- Operating characteristics of high continuous power (50 W) two-dimensional surface-emitting lase arrayIEEE Photonics Technology Letters, 1993
- 50 mW CW-operated single-mode surface-emitting AlGaAs lasers with 45 degrees total reflection mirrorsIEEE Photonics Technology Letters, 1992
- Design and fabrication of ridge waveguide folded-cavity in-plane surface-emitting lasersIEEE Photonics Technology Letters, 1992
- High power cw operation of GaAs/GaAlAs surface-emitting lasers mounted in the junction-up configurationApplied Physics Letters, 1991
- Monolithic two-dimensional surface-emitting strained-layer InGaAs/AlGaAs and AlInGaAs/AlGaAs diode laser arrays with over 50% differential quantum efficienciesApplied Physics Letters, 1991