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Proceedings Paper

Chalcogenide molded freeform optics for mid-infrared lasers
Author(s): Francois Chenard; Oseas Alvarez; Allen Yi
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Paper Abstract

High-precision chalcogenide molded micro-lenses were produced to collimate mid-infrared Quantum Cascade Lasers (QCLs). Molded cylindrical micro-lens prototypes with aspheric contour (acylindrical), high numerical aperture (NA~0.8) and small focal length (f<2 mm) were fabricated to collimate the QCL fast-axis beam. Another innovative freeform micro-lens has an input acylindrical surface to collimate the fast axis and an orthogonal output acylindrical surface to collimate the slow axis. The thickness of the freeform lens is such that the output fast- and slow-axis beams are circular. This paper presents results on the chalcogenide molded freeform micro-lens designed to collimate and circularize QCL at 4.6 microns.

Paper Details

Date Published: 11 May 2017
PDF: 8 pages
Proc. SPIE 10181, Advanced Optics for Defense Applications: UV through LWIR II, 101810U (11 May 2017); doi: 10.1117/12.2269075
Show Author Affiliations
Francois Chenard, IRflex Corp. (United States)
Oseas Alvarez, IRflex Corp. (United States)
Allen Yi, The Ohio State Univ. (United States)


Published in SPIE Proceedings Vol. 10181:
Advanced Optics for Defense Applications: UV through LWIR II
Jay N. Vizgaitis; Bjørn F. Andresen; Peter L. Marasco; Jasbinder S. Sanghera; Miguel P. Snyder, Editor(s)

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