To answer calls for vegetation canopy and cryosphere lidar instrument including but not limited to Canopy Height and Glacier Elevation (CHANGE) and Global Ecosystems Dynamics Investigation (GEDI) 2, we propose to design and build a next generation laser transmitter architecture. In this proposal we will develop a bread board demonstration 1064 nm, 5 ns, 10 mJ laser that will be used to study mission requirement margins in a laboratory environment. This laser will use the highly successful design elements from the GEDI Laser and update the architecture to achieve mission requirements.More »
The 2017 Earth Science Decadal Survey identified a new competed class of cost-capped missions, designed the Earth System Explorers. Among the 7 topics specifically identified, ice elevation and canopy height and structure are two topics that a laser-altimeter based mission architecture could meet. The first ESE Announcement of Opportunity is expected in FY22.
Our end product will be a laser system meeting the mission driving requirements 1064 nm, 5 ns, 10 mJ. The intent would be to have a robust and high confidence laser test bed that heavily leverages the GEDI laser that could in turn be could be used for flight proposals supporting topographic, vegetation and cryosphere lidars that would need a fast turn around on relatively high TRL laser technology.
This concept would leverage innovative 3-D print technology for the breadboard build that has been invested in a FY21 GFIC “ Characterization and Testing of Copper-Nickel Electroplated 3D Printed Parts for Space Flight Applications”
|Organizations Performing Work||Role||Type||Location|
|Goddard Space Flight Center (GSFC)||Lead Organization||NASA Center||Greenbelt, Maryland|
This project successfully completed the redesign of the the GEDI laser system in order to meet predicted mission specifications for the CHANGE mission proposal. Specifically this involved compressing the laser cavity and changing the output coupling to achieve a tighter pulse width of 5 ns while maintaining output energy. Breadboard testing was not completed unfortunately because a long lead PR was held up in approvals and the part has not arrived yet. Once it is in, it will be relatively simple to install the part and run the breadboard to confirm predictions. The testbed will then be available for future CHANGE studies if called upon.
The purpose of the Goddard Space Flight Center’s Internal Research and Development (IRAD) program is to support new technology development and to address scientific challenges. Each year, Principal Investigators (PIs) submit IRAD proposals and compete for funding for their development projects. Goddard’s IRAD program supports eight Lines of Business: Astrophysics; Communications and Navigation; Cross-Cutting Technology and Capabilities; Earth Science; Heliophysics; Planetary Science; Science Small Satellites Technology; and Suborbital Platforms and Range Services.
Task progress is evaluated twice a year at the Mid-term IRAD review and the end of the year. When the funding period has ended, the PIs compete again for IRAD funding or seek new sources of development and research funding, or agree to external partnerships and collaborations. In some cases, when the development work has reached the appropriate Technology Readiness Level (TRL) level, the product is integrated into an actual NASA mission or used to support other government agencies. The technology may also be licensed out to the industry.
The completion of a project does not necessarily indicate that the development work has stopped. The work could potentially continue in the future as a follow-on IRAD; or be used in collaboration or partnership with Academia, Industry, and other Government Agencies.
If you are interested in partnering with NASA, see the TechPort Partnerships documentation available on the TechPort Help tab. http://techport.nasa.gov/help