Abstract
Compact bistable GaAs étalons with epitaxial GaAs/AlAs Bragg reflectors have been fabricated by metallorganic vapor phase epitaxy. Their monolithic structure is convenient for further technological steps. It has been found that the good thermal conductivity of the mirror layers allows more efficient heat sinking and leads to improved switching characteristics. A 2:1 contrast ratio and a 20 ns switching time have been obtained in the reflective mode, with a 4 mW threshold power and a strongly reduced dependence of the switch-off threshold upon incident pulse duration.
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