Distributed feedback gain-coupled lasers based on InGaAs quantum-wire arrays |
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| Authors: | J Robadey U Marti RO Miles M Glick F Filipowitz M Achtenhagen D Martin F Morier-Genoud PC Silva Y Magnenat P-H Jouneau F Bobard FK Reinhart |
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| Affiliation: | Inst. de Micro- et Optoelectron., Ecole Polytech. Federale de Lausanne, Switzerland; |
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| 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/sup 2/. The side-mode suppression ratio at twice threshold is 35 dB. A 4-/spl mu/m 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. |
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