Open AccessFemtosecond laser one-step direct-writing cylindrical microlens array on fused silica
Author(s) -
Zhi Luo,
Ji’an Duan,
Guo Chen
Publication year - 2017
Publication title -
optics letters/optics index
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.524
H-Index - 272
eISSN - 1071-2763
pISSN - 0146-9592
DOI - 10.1364/ol.42.002358
Subject(s) - microlens , optics , materials science , femtosecond , laser , fabrication , optoelectronics , lens (geology) , physics , medicine , alternative medicine , pathology
We demonstrate an efficient method for fabricating high-quality cylindrical microlens arrays (CMLAs) on the surface of fused silica, fully based on spatially shaping of a femtosecond laser beam from Gaussian to Bessel distribution. As the envelope of shaped spatial intensity distribution matches the profile of cylindrical microlens perfectly, a CMLA with more than 50 uniform microlenses is fabricated by simple line scanning. The radius and height of these microlens units can be finely controlled by adjusting the power of laser pulses. Excellent optical imaging and high-speed fabrication performances are also demonstrated by our fabricated CLMA.