Journal
APPLIED PHYSICS LETTERS
Volume 97, Issue 22, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.3521464
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Funding
- Deutsche Forschungsgemeinschaft (DFG) [DFG-Fr 1671/4-3]
- State of Baden-Wurttemberg through the DFG-Center for Functional Nanostructures (CFN) [DFG-Fr 1671/6-1]
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Three-dimensional direct laser writing is commonly associated with tightly focused femtosecond laser pulses. Although few reports have used continuous-wave lasers instead, it is unclear whether state-of-the-art three-dimensional submicron structures for photonics can be fabricated along these lines. Here, we systematically investigate the underlying mechanisms using a 532 nm continuous-wave laser operating at power levels of only some 10 mW and three different commercially available photoresists. Body-centered cubic woodpile photonic crystals composed of 24 layers with rod spacings as small as 450 nm serve as a demanding benchmark example for illustrating state-of-the-art. (C) 2010 American Institute of Physics. [doi: 10.1063/1.3521464]
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