Skip Navigation
Center Innovation Fund: JPL CIF

Next Generation Broadband Grating for Hyperspectral Thermal Infrared Imagers

Completed Technology Project

Project Introduction

Next Generation Broadband Grating for Hyperspectral Thermal Infrared Imagers
Design and electron-beam fabricate a shaped-groove concave/convex grating to significantly extend the wavelength range of future airborne and space-based HyTES-like (Hyperspectral Thermal Emission Spectrometer) systems. Grating wavelength range will be 3 µm to 12 µm (MWIR-LWIR). Current HyTES wavelength range is 7.5 µm to 12 µm (LWIR only). The shaped-groove design can produce tailored efficiency to equalize instrument SNR across full wavelength range (compensates for signal and detector responsivity variation with wavelength). Flat efficiency shaped-groove proof of concept design shown at right. Concave/convex grating will be electron-beam fabricated using improved writing schemes to improve uniformity reduce ghosts/scatter. Grating performance (efficiency and scatter) will be measured in a laboratory setup (FY 2015 end state). Grating performance will be demonstrated in a laboratory breadboard spectrometer with a JPL HOT-BIRD* detector (FY 2016 end state). More »

Anticipated Benefits

Primary U.S. Work Locations and Key Partners

Project Library

Share this Project

Organizational Responsibility

Project Management

Project Duration

Technology Maturity (TRL)

Technology Areas

Light bulb

Suggest an Edit

Recommend changes and additions to this project record.