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We present an actuated silicon-micromachined micromirror with continuous and highly accurate position adjustment designed to be used in the construction of external-cavity semiconductor-laser modules. In our initial design, a positioning accuracy better than /spl plusmn/0.2 /spl mu/m for the actuated micromirrors is obtained. The mechanical robustness, small size, and fine-positional precision of the actuated micromirrors are sufficient for external-cavity-laser applications. In production, the cost of these miniature external-cavity-laser systems should be low because they are batch-processed.