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Passive fabrication of FUV bandpass filters for HWO spectrograph instrumentation

Completed TRL 4 (started at 2, targeting 4)

Description

This effort supports the production of reflective far-ultraviolet (FUV) band-selecting filters fo FUV multi-object spectrograph applications. We will utilize a novel reactive physical vapor deposition (rPVD) method, which has been previously proven to produce high-efficient reflective FUV broadband films, to fabricate these filters. This effort will target the development of a high-efficiency FUV bandpass filter operating at and extended spectral range of 160-200 nm.

Benefits

Future Habworlds (HWO) payload concepts, such as the HWO HabWorlds Ultraviolet Multi-Object Spectrograph (HUMS), will need highly efficient FUV band-separating/Lyman-alpha suppressing FUV filters, and the filter produced in this proposed effort will serve as a prototype for one of the proposed bands. This effort is also a technology maturation for risk reduction as the methods proposed do not require high-temperature heating.

Details

Technology areaSensors and Instruments > Remote Sensing Instruments and Sensors > Optical Components
ProgramCenter Independent Research & Development: GSFC IRAD (GSFC IRAD)
Lead organizationGoddard Space Flight Center, Greenbelt, MD
Start date2024-10-01
End date2025-09-30

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