We describe a technique for fabricating fast well-corrected cylindrical microlenses for applications such as collimating laser diodes and coupling light into and out of integrated optics devices. The lenses are produced by first grinding a glass preform to a desired cross-sectional shape and then heating and drawing the preform into a fiber of the desired diameter. The heating and drawing operations polish the glass surface and reduce the cross-sectional dimensions but maintain the cross-sectional shape. Diffraction-limited 220-μm focal length immersion lenses with numerical aperture >0.6 have been demonstrated.
© 1991 Optical Society of America
Original Manuscript: October 9, 1990
Published: July 1, 1991
James J. Snyder, Patrick Reichert, and Thomas M. Baer, "Fast diffraction-limited cylindrical microlenses," Appl. Opt. 30, 2743-2747 (1991)