CW performance of an InGaAs-GaAs-AlGaAs laterally-coupled distributed feedback (LC-DFB) ridge laser diode
- 1 March 1995
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Photonics Technology Letters
- Vol. 7 (3) , 244-246
- https://doi.org/10.1109/68.372734
Abstract
Single-mode distributed feedback (DFB) laser diodes typically require a two-step epitaxial growth or use of a corrugated substrate. We demonstrate InGaAs-GaAs-AlGaAs DFB lasers fabricated from a single epitaxial growth using lateral evanescent coupling of the optical field to a surface grating etched along the sides of the ridge. A CW threshold current of 25 mA and external quantum efficiency of 0.48 mW/mA per facet were measured for a 1 mm cavity length device with anti-reflection coated facets. Single-mode output powers as high as 11 mW per facet at 935 nm wavelength were attained. A coupling coefficient of at least 5.8 cm/sup -1/ was calculated from the subthreshold spectrum taking into account the 2% residual facet reflectivity.<>Keywords
This publication has 10 references indexed in Scilit:
- Laterally coupled distributed feedback laser fabricated with electron-beam lithography and chemically assisted ion-beam etchingJournal of Vacuum Science & Technology B: Microelectronics and Nanometer Structures, 1994
- InGaAs-GaAs-AlGaAs laterally-coupled distributedfeedback (LC-DFB) ridge laser diodeElectronics Letters, 1994
- Ridge-waveguide sidewall-grating distributed feedback structures fabricated by x-ray lithographyJournal of Vacuum Science & Technology B: Microelectronics and Nanometer Structures, 1993
- Characterization of an InGaAs-GaAs-AlGaAs strained-layer distributed-feedback ridge-waveguide quantum-well heterostructure laserIEEE Photonics Technology Letters, 1992
- Evaluation of the coupling coefficient of a distributed feedback laser with residual facet reflectivityJournal of Applied Physics, 1987
- Analysis of ridge-waveguide distributed feedback lasersIEEE Journal of Quantum Electronics, 1985
- A novel GaInAsP/InP distributed feedback laserApplied Physics Letters, 1985
- On the Use of Effective Refractive Index in DFB Laser Mode SeparationJapanese Journal of Applied Physics, 1983
- Effect of external reflectors on longitudinal modes of distributed feedback lasersIEEE Journal of Quantum Electronics, 1975
- Coupled-Wave Theory of Distributed Feedback LasersJournal of Applied Physics, 1972