Fabrication and characterization of diffractive optical elements in InP for monolithic integration with surface-emitting components
Applied Optics, Vol. 39, Issue 3, pp. 398-401 (2000)
http://dx.doi.org/10.1364/AO.39.000398
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Abstract
We report on the fabrication and subsequent characterization of binary diffractive optical elements (DOE’s) in InP for operation at 1.3 μm. Fresnel lenses of different focal lengths and a DOE that splits and focuses an incident beam into a 1 × 4 array of spots (optical fan-out) were fabricated. We realized the surface reliefs by patterning resist, using electron-beam lithography and etching with a chemically assisted ion beam, which produced well-defined patterns with smooth sidewalls and little if no surface roughness. The measured efficiency for the lenses was 36%. For the fan-out element the efficiency and the uniformity error were 26% and 30%, respectively. Spot sizes as small as 16 μm were measured.
© 2000 Optical Society of America
[Optical Society of America ]
OCIS Codes
(050.1380) Diffraction and gratings : Binary optics
(050.1970) Diffraction and gratings : Diffractive optics
(250.7260) Optoelectronics : Vertical cavity surface emitting lasers
Citation
Josip Vukusic, Jörgen Bengtsson, Marco Ghisoni, Anders Larsson, Carl-Fredrik Carlström, and Gunnar Landgren, "Fabrication and characterization of diffractive optical elements in InP for monolithic integration with surface-emitting components," Appl. Opt. 39, 398-401 (2000)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-39-3-398
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