12 May 1995 Hybrid binary optic/cylinder lens array for collimation of diode laser arrays
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Abstract
The design, fabrication, and testing of a collimating lens array is discussed. The lens array is a hybrid design using a cylinder lens along with a binary optic element array. The binary optics were made on silicon dioxide substrates, patterned with a contact print excimer laser mask aligner and reactive ion etched. The lens array is designed to collimate 100 individual laser sources on a 100-micrometers pitch. The 1-cm lens array collimates lasers array sources laterally (along the axis of the array) using only the binary optic elements. In the other highly divergent axis of the diode laser array, the lens array corrects cylinder lens aberrations with the binary optic elements and does the gross collimation with the cylinder lens. The results were 50 percent transmission and 50 percent Strehl ratio, both very disappointing. Possible causes of the poor performance are in both design and fabrication.
© (1995) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Joseph L. Levy, Joseph L. Levy, } "Hybrid binary optic/cylinder lens array for collimation of diode laser arrays", Proc. SPIE 2383, Micro-Optics/Micromechanics and Laser Scanning and Shaping, (12 May 1995); doi: 10.1117/12.209029; https://doi.org/10.1117/12.209029
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