{"project":{"acronym":"","projectId":34039,"title":"3-color DPAS Aerosol Absorption Monitor","primaryTaxonomyNodes":[{"taxonomyNodeId":10745,"taxonomyRootId":8816,"parentNodeId":10740,"level":3,"code":"TX08.1.5","title":"Lasers","definition":"Passive laser technologies, such as laser heterodyne radiometry, can involve low-power elements such as distributive feedback (DFB) lasers; active laser systems that pass through the atmosphere to make a measurement, such as light detecting and ranging (LIDAR) require higher powered laser elements.","exampleTechnologies":"Pulsed lasers, and the electro-optical components that support them like fibers, gratings, crystals, laser diodes, electro-optical modulators, nanolasers","hasChildren":false,"hasInteriorContent":true}],"startTrl":2,"currentTrl":4,"endTrl":4,"benefits":"The primary NASA need for this technology is to measure spectrally resolved light absorption by atmospheric aerosols for its Airborne Measurement program. At present, aerosol light absorption is measured by collecting sample on a filter subtract and measuring light extinction and scattering of the collected samples during the airborne measurements. This method suffers from a number of intrinsic errors. The proposed DPAS technique will be far more sensitive than the filter-based techniques, and is capable of providing 1s data acquisition measurement. Additionally, past NASA programs such as EXCAVATE, APEX, UNA-UNA, and AAFEX have had as a major focus, on the measurement of black carbon emissions from civilian aircraft engines. Since mass absorption coefficient of black carbon is known at several visible wavelengths, the proposed DPAS aerosol absorption monitor can be used as a black carbon emission monitor.
We expect that the 3-color RGB DPAS aerosol absorption monitor developed under this program will significantly benefit the scientific community interested in characterizing the radiative properties of ambient aerosols. The ability of one instrument to simultaneously measure spectrally resolved particle absorption with good time resolution and high precision will enable continuous measurements of the particle optical absorption that can be directly used by regional and global climate forcing models. In combination with the Cavity Attenuated Phase-Shift (CAPS) extinction monitor, which represents a dramatic improvement on current particle extinction measurement technology, single particle albedo of ambient aerosols could be directly determined. Since aerosol scattering of solar radiation causes atmospheric cooling, whereas absorption can cause atmospheric warming, direct measurements on single particle albedo of ambient aerosols are critical in understanding aerosol effect on the Earth radiative balance.","description":"We propose to develop a highly sensitive and compact device to monitor light absorption from atmospheric aerosols simultaneously at three spectral regions, red, green, and blue. The proposed method is primarily based on the differential photoacoustic (DPAS) technique and will also take advantage of the current rapid development on high-power semiconductor lasers. The proposed RGB DPAS Aerosol Absorption Monitor will eventually be less than 25 pounds in weight and consume approximately 300W electrical power. It will also be capable of being remotely controlled and being operated at a variety of sampling pressure conditions for the airborne measurements. Since all the major components of the proposed system are commercially available except the home-designed acoustic cells, its total manufacturing cost could be less than $20,000 per unit.","startYear":2015,"startMonth":6,"endYear":2015,"endMonth":12,"statusDescription":"Completed","programDirectors":[{"contactId":206378,"canUserEdit":false,"firstName":"Jason","lastName":"Kessler","fullName":"Jason L Kessler","fullNameInverted":"Kessler, Jason L","middleInitial":"L","primaryEmail":"jason.l.kessler@nasa.gov","publicEmail":true,"nacontact":false}],"programExecutives":[{"contactId":215154,"canUserEdit":false,"firstName":"Jennifer","lastName":"Gustetic","fullName":"Jennifer L Gustetic","fullNameInverted":"Gustetic, Jennifer L","middleInitial":"L","primaryEmail":"jennifer.l.gustetic@nasa.gov","publicEmail":true,"nacontact":false}],"programManagers":[{"contactId":62051,"canUserEdit":false,"firstName":"Carlos","lastName":"Torrez","fullName":"Carlos Torrez","fullNameInverted":"Torrez, 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At present, aerosol light absorption is measured by collecting sample on a filter subtract and measuring light extinction and scattering of the collected samples during the airborne measurements. This method suffers from a number of intrinsic errors. The proposed RGB DPAS technique will be far more sensitive than the filter-based techniques, and is capable of providing 1s data acquisition measurement. Additionally, past NASA programs such as EXCAVATE, APEX, UNA-UNA, and AAFEX have had as a major focus, on the measurement of black carbon emissions from civilian aircraft engines. Since mass absorption coefficient of black carbon is known at several visible wavelengths, the proposed DPAS aerosol absorption monitor can be used as a black carbon emission monitor.
We expect that the 3-color RGB DPAS aerosol absorption monitor developed under this program will significantly benefit the atmospheric science community in characterizing the radiative properties of ambient aerosols. The ability of the proposed instrument to simultaneously measure particle absorption with good time resolution and high precision in three colors will enable continuous measurements of the particle optical absorption that can be directly used by regional and global climate forcing models. In combination with the Cavity Attenuated Phase-Shift (CAPS) extinction monitor, which represents a dramatic improvement on current particle extinction measurement technology, single particle albedo of ambient aerosols could be directly determined. Since aerosol scattering of solar radiation causes atmospheric cooling, whereas absorption can cause atmospheric warming, direct measurements on single particle albedo of ambient aerosols are critical in understanding aerosol effect on the Earth radiative balance.","description":"We propose to develop a highly sensitive and compact RGB DPAS aerosol absorption monitor for NASA's Airborne Measurement Program. It will measure aerosol light absorption simultaneous at three spectral regions: blue, green and red. The proposed measurement technique takes advantage of the current rapid development on high-power semiconductor lasers MEMS microphones. It will eventually weigh less than 25 pounds and consume approximately 300W electrical power. It will also be capable of being remotely controlled and being operated at a variety of sampling pressure conditions for the airborne measurements. Since majority of the electronic and optical components of the proposed system are commercially available except the home-designed acoustic cells, its total manufacturing cost could be less than $20,000 per unit.","startYear":2016,"startMonth":4,"endYear":2018,"endMonth":10,"statusDescription":"Completed","website":"","program":{"acronym":"SBIR/STTR","active":true,"description":"
The NASA SBIR and STTR programs fund the research, development, and demonstration of innovative technologies that fulfill NASA needs as described in the annual Solicitations and have significant potential for successful commercialization. If you are a small business concern (SBC) with 500 or fewer employees or a non-profit RI such as a university or a research laboratory with ties to an SBC, then NASA encourages you to learn more about the SBIR and STTR programs as a potential source of seed funding for the development of your innovations.
The SBIR and STTR programs have 3 phases:
The SBIR and STTR Phase I contracts last for 6 months with a maximum funding of $125,000, and Phase II contracts last for 24 months with a maximum funding of $750,000 - $1.5 million.
Opportunity for Continued Technology Development Post-Phase II:
The NASA SBIR/STTR Program currently has in place two initiatives for supporting its small business partners past the basic Phase I and Phase II elements of the program that emphasize opportunities for commercialization. Specifically, the NASA SBIR/STTR Program has the Phase II Enhancement (Phase II-E) and Phase II eXpanded (Phase II-X) contract options.
Please review the links below to obtain more information on the SBIR/STTR programs.
Provides an overview of the SBIR and STTR programs as implemented by NASA
Provides access to the annual SBIR/STTR Solicitations containing detailed information on the program eligibility requirements, proposal instructions and research topics and subtopics
Schedule and links for the SBIR/STTR solicitations and selection announcements
Federal and non-Federal sources of assistance for small business
Search our complete archive of awarded project abstracts to learn about what NASA has funded
Still have questions? Visit the program FAQs
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The SBIR and STTR programs have 3 phases:
The SBIR and STTR Phase I contracts last for 6 months with a maximum funding of $125,000, and Phase II contracts last for 24 months with a maximum funding of $750,000 - $1.5 million.
Opportunity for Continued Technology Development Post-Phase II:
The NASA SBIR/STTR Program currently has in place two initiatives for supporting its small business partners past the basic Phase I and Phase II elements of the program that emphasize opportunities for commercialization. Specifically, the NASA SBIR/STTR Program has the Phase II Enhancement (Phase II-E) and Phase II eXpanded (Phase II-X) contract options.
Please review the links below to obtain more information on the SBIR/STTR programs.
Provides an overview of the SBIR and STTR programs as implemented by NASA
Provides access to the annual SBIR/STTR Solicitations containing detailed information on the program eligibility requirements, proposal instructions and research topics and subtopics
Schedule and links for the SBIR/STTR solicitations and selection announcements
Federal and non-Federal sources of assistance for small business
Search our complete archive of awarded project abstracts to learn about what NASA has funded
Still have questions? Visit the program FAQs
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