DBR Laser with Nondynamic Plasma Grating Formed bv Focused Ion Beam Imdanted Dopants
نویسندگان
چکیده
A static plasma grating has been demonstrated experimentally [l] in a large optical cavity FIB-DBR GaAIAs/GaAs laser diode. The grating is formed by implanting stripes of dopants with a focused ion beam (FIB). The dopants ionize to form periodic fluctuations in the carrier concentration which, through the Kramers-Kronig relations, form an index grating. A model of the grating strength for optimization of the laser design is developed and presented here. The computed results show that K can be increased by more than an order of magnitude over the 15 cm-' estimated experimentally. Therefore, FIB-DBR (or -DFB) lasers with performance comparable to that of conventional DBR (or DFB) lasers can be expected.
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