Compact efficient uv laser transmitter for space based and airborne ozone dial
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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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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 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.


Uv laser transmitter

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


Current status

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


Code 916 lidar projects ongoing

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


New code 916 lidar projects

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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