Abstract
Due to the ever increasing use of small-scale optical devices such as diode lasers, optical fibers, and CCD pixel elements, optics on a micron scale has become increasingly more important in science and industry. Numerous techniques have been employed to fabricate small-scale optical elements, almost all of which involve complex patterning steps followed by etching or ablation. In this work we present a method of preparing refractive microlenses in a single step, utilizing laser-induced surface structure formation in semiconductor-nanocrystallite-doped glasses (SDGs). The SDG materials, along with above-bandgap laser sources, can be used to fabricate lenses usable at below-bandgap wavelengths.
© 1995 Optical Society of America
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