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ErYAG Energy Scaling for Water Vapor DIAL

Award Information
Agency: National Aeronautics and Space Administration
Branch: N/A
Contract: 80NSSC22PB023
Agency Tracking Number: 221648
Amount: $149,475.00
Phase: Phase I
Program: SBIR
Solicitation Topic Code: S11
Solicitation Number: SBIR_22_P1
Solicitation Year: 2022
Award Year: 2022
Award Start Date (Proposal Award Date): 2022-07-20
Award End Date (Contract End Date): 2023-01-25
Small Business Information
13605 Dulles Technology Drive
Herndon, VA 20171-4603
United States
DUNS: 107940207
HUBZone Owned: No
Woman Owned: No
Socially and Economically Disadvantaged: No
Principal Investigator
 Evan Hale
 (703) 471-7671
Business Contact
 Tracy Perinis
Phone: (703) 471-7671
Research Institution

Fibertek proposes to develop technology for power scaling a frequency doubled Er:YAG single frequency laser source to meet the needs for a planned water vapor DIAL space-based instrument.nbsp; Our approach will focus on quantifying the system level benefits of reduced-temperature operation of a power-scaled Er:YAG oscillator and power amplifier.nbsp; A primary challenge to the Er:YAG laser system is inherently low gain and quasi-three-level lasing transitions of the erbium activator ions.nbsp; It is well-established that reducing the laser gain medium to sub-ambient temperatures improves achievable laser efficiency.nbsp; However, models based on cross-section data from the current literature that simply use Boltzman statistics for scaling cannot account for the observed improvements, inhibiting system trades of performance versus temperature.nbsp; Fibertek proposes to address the lack of data in the current literature by collecting spectroscopic data over the temperature range 77K-300K to determine the optimum gain medium temperature for Er:YAG.nbsp; This data will be integrated into an advanced energetics model to accurately predict improvements in laser efficiency.nbsp; The model predictions will be validated through laser demonstrations as well as to guide a study to assess the improvements relative to potential SWaP penalties associated with operating at a reduced temperature.nbsp; Energy scaling of Er:YAG could potentially provide NASA with a compact laser transmitter that could revolutionize weather and climate research by providing three dimensional distributions of water vapor profiles, estimates of perceptible water vapor, high resolution methane column measurements, distributions of planetary boundary layer heights, and attenuated profiles of aerosols and clouds.

* Information listed above is at the time of submission. *

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