Fabrication of large-sag aspheric micro-optics with nanometer accuracy using electron-beam lithography on curved substrates

Zhaohui Yang; James R. Leger

doi:10.1117/1.2190627

1 April 2006 Fabrication of large-sag aspheric micro-optics with nanometer accuracy using electron-beam lithography on curved substrates

Zhaohui Yang, James R. Leger

Author Affiliations +

Optical Engineering, Vol. 45, Issue 4, 043401 (April 2006). https://doi.org/10.1117/1.2190627

Abstract

Smooth patterns were written into PMGI electron-beam resist using electron-beam lithography on BK7 blank concave mirror substrates, resulting in aspheric optics with sag as large as 4 µm. Interference microscope measurements revealed that the fabricated optics had height accuracy of 10 nm. These optics were designed for flattop mode shaping in laser resonators. Excellent performance of these optics has been demonstrated by testing them as fixed phase-conjugate mirrors outside laser resonators, as well as mode-shaping mirrors within laser resonators.

©(2006) Society of Photo-Optical Instrumentation Engineers (SPIE)

Citation Download Citation

Zhaohui Yang and James R. Leger "Fabrication of large-sag aspheric micro-optics with nanometer accuracy using electron-beam lithography on curved substrates," Optical Engineering 45(4), 043401 (1 April 2006). https://doi.org/10.1117/1.2190627

Published: 1 April 2006

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