Distributed feedback gain-coupled lasers based on InGaAs quantum-wire arrays
- 1 January 1997
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Photonics Technology Letters
- Vol. 9 (1) , 5-7
- https://doi.org/10.1109/68.554152
Abstract
Fabrication and characterization of a current-injected InGaAs-GaAs quantum-wire gain-coupled distributed feedback (DFB) laser operating at 77 K at a wavelength of 923 nm are presented. Threshold current densities in broad area lasers were measured to be as low as 160 A/cm 2 . The side-mode suppression ratio at twice threshold is 35 dB. A 4-μm rib waveguide device has a threshold of 14 mA. The patterning process for the second-order DFB grating fabricated with deep UV holography and wet-chemical etching is described.Keywords
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