Depressed index cladding graded barrier separate confinement single quantum well heterostructure laser
- 18 November 1991
- journal article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 59 (21), 2694-2696
- https://doi.org/10.1063/1.105887
Abstract
In this letter, we present data for a novel depressed index cladding laser structure which provides reduced perpendicular far-field divergence angle with acceptable low-threshold current densities. Narrow perpendicular divergence angles of 27° full width at half maximum for a nearly perfect Gaussian beam shape have been measured, with a corresponding near-field spot size of 1.30 μm. Threshold current densities of 309 A/cm2 are observed for 150 μm stripewidth, 780 μm long devices with 0.80 μm transverse spot sizes. Pulsed output powers for unmounted devices are greater than 0.9 W/uncoated facet.Keywords
This publication has 5 references indexed in Scilit:
- Low-divergence single-mode ridge waveguide diode lasersIEEE Photonics Technology Letters, 1991
- Metalorganic chemical vapor depositionCritical Reviews in Solid State and Materials Sciences, 1988
- Operational and design considerations for broad area graded barrier quantum well heterostructure lasers grown by metalorganic chemical vapor deposition for high power applicationsFiber and Integrated Optics, 1988
- Effect of compositionally graded and superlattice buffer layers on the device performance of graded barrier quantum well heterostructure laser diodesApplied Physics Letters, 1987
- AN EFFICIENT LARGE OPTICAL CAVITY INJECTION LASERApplied Physics Letters, 1970