Hyperspectral grating optimization and manufacturing considerations

Leah Ziph-Schatzberg; Barry Swartz; Chris Warren; Jeff Santman; Mohammad Saleh; Richard Wiggins; Joe Crifasi; Lovell Comstock; Kevan Taylor

doi:10.1117/12.2180378

3 June 2015 Hyperspectral grating optimization and manufacturing considerations

Leah Ziph-Schatzberg, Barry Swartz, Chris Warren, Jeff Santman, Mohammad Saleh, Richard Wiggins, Joe Crifasi, Lovell Comstock, Kevan Taylor

Author Affiliations +

Proceedings Volume 9482, Next-Generation Spectroscopic Technologies VIII; 948210 (2015) https://doi.org/10.1117/12.2180378
Event: SPIE Sensing Technology + Applications, 2015, Baltimore, MD, United States

Abstract

Hyperspectral imaging systems are finding broader applications in both the commercial and aerospace markets. It is becoming clear that to optimize the performance of these systems, their instrument transfer function needs to be tailored for each application. Vis-SWIR systems in the full 400nm to 2500nm waveband present particular design and manufacturing challenges. A single blazed grating is inadequate for a system operating in the full vis-SWIR wavelength range. In addition, optical materials and broad band coatings present a challenge for non-reflective systems. An understanding of the application and wavelengths of interest, combined with a judicious choice of a focal plane array, can then lead to an optimized system for the specific application. The ability to tailor the grating and manufacture a wide variety of grating profiles and substrate shapes becomes a significant performance enabler. This paper will discuss how the use of optical, coating, and grating design/analysis software, combined with grating manufacturing techniques assure meeting high performance requirements for different applications.

Citation Download Citation

Leah Ziph-Schatzberg, Barry Swartz, Chris Warren, Jeff Santman, Mohammad Saleh, Richard Wiggins, Joe Crifasi, Lovell Comstock, and Kevan Taylor "Hyperspectral grating optimization and manufacturing considerations", Proc. SPIE 9482, Next-Generation Spectroscopic Technologies VIII, 948210 (3 June 2015); https://doi.org/10.1117/12.2180378

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KEYWORDS

Sensors

Manufacturing

Diffraction gratings

Optical coatings

Optics manufacturing

Phase shifts

Design for manufacturability

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