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Microfabrication of a Diffractive Microlens Array on n‐GaAs by an Efficient Electrochemical Method
Author(s) -
Zhang L.,
Ma X. Z.,
Zhuang J. L.,
Qiu C. K.,
Du C. L.,
Tang J.,
Tian Z. W.
Publication year - 2007
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.200700300
Subject(s) - microlens , materials science , microfabrication , fabrication , etching (microfabrication) , optoelectronics , optics , isotropic etching , diffraction , layer (electronics) , nanotechnology , physics , lens (geology) , medicine , alternative medicine , pathology
A first example of the fabrication of large‐scale diffractive microlens arrays on n‐GaAs using an efficient electrochemical technique named CELT (confined etchant layer technique) is reported. This microlens array is an eight‐phase level diffractive optic device with eight concentric rings and seven steps in one lenslet. When appropriate chemical solutions and etching conditions are chosen, an approximate copy of the diffractive microlens array on the quartz is transferred onto the n‐GaAs.