GaInAsSb-AlGaAsSb distributed feedback lasers emitting near 2.4 /spl mu/m |
| |
| Authors: | M. Hummer K. Rossner A. Benkert A. Forchel |
| |
| Affiliation: | Technische Phys., Univ. Wurzburg, Germany; |
| |
| Abstract: | We have investigated fabrication and characteristics of continuous wave (cw) GaInAsSb-AlGaAsSb distributed feedback (DFB) lasers in the 2.4-/spl mu/m range. Single-mode DFB emission is obtained without overgrowth by first order Cr-Bragg gratings on both sides of a laser ridge. The cw threshold currents for a cavity with a length of 800 /spl mu/m and a width of 4 /spl mu/m are around 30 mA. At 20/spl deg/C and at an injection current of 190 mA output powers of 8.5 mW were realized. Monomode emission with a side-mode suppression ratio (SMSR) of 33 dB has been obtained. |
| |
| Keywords: | |
|
