NGSLR - NASA

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Configura1on for Intercomparison with MOB-‐7 ▪ Laser and detector: -‐ <strong>NASA</strong> in-‐house built laser (Poulios & Coyle): ~ 1 mJ per pulse, 200 ps pulsewidth -‐ Variable rep rate (nominally 2 kHz), variable transmit energy -‐ Hamamatsu high QE MCP detector -‐ Expect a factor of 20x improvement over Q-‐Peak configura/on ▪ Tracking performance for period Dec 2010 – July 2011: -‐ Successfully tracked LEOs, LAGEOS and GLONASS at night -‐ Return rates were higher than with Q-‐Peak -‐ Was not able to range during daylight – due to wavelength instability and mismatch with daylight filter ▪ In-‐house laser issues currently being worked in B33 lab: -‐ Internal damage from high energy density on laser op/cs (this has been fixed) -‐ Stability issues (purchased new seeder to eliminate wavelength instability) -‐ Comes back shortly to <strong>NGSLR</strong> to allow us to con/nue development efforts and performance improvements, and to establish a baseline for system tracking / ranging performance SGP 9/27/2011 jlfm 24
In-‐house built 2 kHz laser Regenera/ve amplifier seeded by a gain-‐switched diode laser Nd:YAG slabs 1.5m folded cavity Seeder KTP doubler Pockels cell SGP 9/27/2011 jlfm 25
Page 1 and 2: NGSLR: NASA’s Next Genera1on Sate
Page 3 and 4: Team John Annen (automa/on lab lead
Page 5 and 6: Original Goals* “…the primary t
Page 7 and 8: SYSTEM Description SGP 9/27/2011 jl
Page 9 and 10: NGSLR System Characteris1cs • Tel
Page 11 and 12: Current Op1cal Bench Layout SGP 9/2
Page 13 and 14: NGSLR Computer Interfaces SGP 9/27/
Page 15 and 16: Automa1on Overview (some of the fun
Page 17 and 18: New Technologies Developed for NGSL
Page 19 and 20: Original System Configura1on Q-
Page 21 and 22: Current Automa1on Status ▪ Comple
Page 23: The Path to Completion SGP 9/27/201
Page 27 and 28: NGSLR Automa1on Laboratory • Deve
Page 29 and 30: IO Chassis • Controls and distrib
Page 31 and 32: Final System Configura1on Hamamatsu
Page 33: SUMMARY - Most of the original goal

NGSLR - NASA

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