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Compact , Efficient UV Laser Transmitter for Space-based and Airborne Ozone DIAL

Compact , Efficient UV Laser Transmitter for Space-based and Airborne Ozone DIAL. Space-based or UAV active measurements of O 3 require novel method of obtaining high powers of UV laser emission.

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Compact , Efficient UV Laser Transmitter for Space-based and Airborne Ozone DIAL

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  1. Compact , Efficient UV Laser Transmitter for Space-based and Airborne Ozone DIAL • Space-based or UAV active measurements of O3 require novel method of obtaining high powers of UV laser emission. • P.I. - S. Higdon, ITT ; Co-PI – T. McGee, Code 916; Co-I’s M, Schoeberl, GSFC, M.P. McCormick and T. Chyba, Hampton U.; D. Richter, ITT. • New Proposal. • Technique uses a high rep-rate, low pulse energy Diode pumped YAG laser to pump OPO’s to generate required wavelengths. >12% efficiency from IR to UV; 1.1% total wallplug efficiency.

  2. 1064 nm 1000 Hz, Nd:YAG 2w 3w Isolator 355 nm 1064 nm 299 nm 1.91 mm OPO 1.91 mm KTA Mixer OC HR ozone b a error ozone Figure 3. Percent random error calculated for two airborne DIAL systems: (a) our test-bed system and (b) an existing NASA system. Figure 2. Ozone profile and DIAL error vs. altitude for our space-based DIAL system. UV Laser Transmitter • Transmitter will be tested in a compact airborne instrument (precursor to UAV) Figure 1. High performance UV laser system

  3. Current Status • OPO Development at ITT funded through NASA Earth Science Technology Office • Exploring pump laser development through SBIR program • Develop proposal for inclusion on WB-57 AURA Validation payload

  4. Code 916 Lidar Projects - Ongoing • Airborne Raman Ozone Temperature and Aerosol Lidar (AROTEL) • DC-8 Instrument, flown in SOLVE Campaign • Measures Vertical Profiles of O3, T, and Aerosol and Cloud properties above the aircraft • Stratospheric Ozone Lidar • Ground-based, UV, mobile lidar • Measures O3, T, Aerosols, in stratosphere • More than 20 International NDSC, Aircraft, and Satellite Validation Campaigns • Currently deployed in New Zealand • Aerosol and Temperature Lidar • Ground-based Mobile Lidar, Near IR, Vis and UV • Multiple International Campaigns

  5. New Code 916 Lidar Projects • Tropospheric Ozone Lidar • Laboratory UV DIAL Instrument • Under Construction for Urban Pollution Studies • Autonomous Cloud Lidar for Tropics • Collaboration with Code 912 and JPL • Deployment to Kiritibati (2N) for Cirrus studies • Backscatter and Depolarization • Modification of AT Lidar • Addition of H2O channel; Depolarization in IR and Vis; Rotational Raman Temperature measurement in troposphere

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