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Single-step laser fabrication of refractive microlenses in semiconductor-doped glasses

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Abstract

Exposure of semiconductor-doped glasses to above-band-gap focused cw laser radiation results in the controllable formation of microlenses. A laser-driven thermal runaway is proposed to explain the low powers required for the process. A linear array of eight identically prepared microlenses is characterized and shown to exhibit diffraction-limited performance.

© 1995 Optical Society of America

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