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Monolithic Chip-Integrated Absorption Spectrometer from 3-5 microns, Phase I

Metadata Updated: November 12, 2020

A monolithically integrated indium phosphide (InP) to silicon-on-sapphire (SoS) platform is being proposed for a monolithic portable or handheld spectrometer between 3-5microns. SoS provides the necessary refractive index contrast to fabricate slotted photonic crystal waveguide (PCW) structures for lab-on-chip sensing. Monolithic integration of quantum cascade laser (QCL) and quantum cascade detector (QCD) has been previously demonstrated by us at 9.5 micron wavelength on a solely InP platform in which PCWs cannot be fabricated without significant fabrication complexities. At 3.4 micron wavelength, we have also demonstrated 1ppm gas sensing by slow light and intensity enhancements of slotted PCWs in SoS. The Phase 1 proposal takes the crucial step of wafer bonding to integrate the best capabilities of the individual platforms and integrate into a full-fledged monolithic absorption spectrometer. The work plan is thus to demonstrate the technical objectives which are: 1) Design and fabricate slotted PCWs at 4.55 micron 2) Demonstrate feasibility for sub 10ppb detection sensitivity in our slotted PCW at 4.55 micron in SoS for carbon monoxide 3) Demonstrate monolithic integration of quantum cascade laser, quantum cascade detector and silicon-on-sapphire waveguide at 4.55 micron and 4) Design simultaneous QCL-QCD structures for operation around the selected wavelengths at 3.3 micron (CH4), 4.2 micron (CO2) and 4.55 micron (CO) for fabrication in Phase 2.

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Public: This dataset is intended for public access and use. License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

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Metadata Created Date November 12, 2020
Metadata Updated Date November 12, 2020

Metadata Source

Harvested from NASA Data.json

Additional Metadata

Resource Type Dataset
Metadata Created Date November 12, 2020
Metadata Updated Date November 12, 2020
Publisher Space Technology Mission Directorate
Unique Identifier Unknown
Identifier TECHPORT_93653
Data First Published 2017-12-01
Data Last Modified 2020-01-29
Public Access Level public
Bureau Code 026:00
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Harvest Object Id 1957b7a7-40eb-4130-8178-6f6ce9696780
Harvest Source Id 58f92550-7a01-4f00-b1b2-8dc953bd598f
Harvest Source Title NASA Data.json
Homepage URL
Program Code 026:027
Source Datajson Identifier True
Source Hash 048ea24e7d7a1dde785cfe1a5f3e167cfd6e5bd4
Source Schema Version 1.1

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