National Capital Section
of the Optical Society of America
Second 2013-2014 meeting of the
National Capital Section of the Optical Society of America
At the NASA Goddard Visitor Center
Tuesday, November 19, 2013
"ATOM INTERFEROMETRY PRINCIPLES AND ITS APPLICATIONS TO EARTH SCIENCES"
Dr. Dr. Babak Saif
NASA/Goddard Space Flight Center
Atom Interferometers as measurement instruments have a better reproducibility, repeatability, and accuracy than any optical interferometers that are manmade. Atoms in their own inertial frame are almost completely to the first order decoupled from their environment so their noise floor is lower than optical interferometers. In this frame, free fall, atoms are the best test particles for measuring any gravitational field. They can be used to measure the gravity gradient field of the Earth, moon, and other planets. Gradiometers applicable to Earth science studies from a satellite platform in low-Earth orbit will be discussed. The instrument will take advantage of the long interrogation times that are available in microgravity environments.
Dr. Babak Saif received a B.S. in Electrical Engineering and the M.S. and PhD. Degrees in Physics from the Catholic University of America, and also M.S. and PhD. Degrees in Optics from the University of Arizona. His PhD specialties were in the electrical properties of DNA molecules and speckle interferometry. He has served as the Optical Branch Head when employed by Swales Aerospace. Subsequently, he was a scientist at the Space telescope Science Institute and is presently an optical engineer with Godard’s Optics Branch supporting the James Webb Space Telescope project.
6:00 PM Social Hour and Networking
6:30 PM Lecture: "Atom Interferometry Principles and its Applications to Earth Science" by Babak Saif, NASA Goddard.
About 7:45 PM: Optional dinner at Siri's Chef's Secret Restaurant, 5810 Greenbelt Road, Greenbelt, MD
Dinner will be ordered individually from the menu. Dinner, including appetizer and a simple desert is in the neighborhood of $20., including tax and tip.
Reservations are requested for the dinner so that we may let the restaurant know how many to expect. Contact:
DIRECTIONS to Goddard SFC Recreation Area (on Good Luck Road)
Directions:: From the Capital Beltway (I-95/I-495) exit onto the Baltimore-Washington Parkway, North, towards Baltimore.
Almost immediately, exit onto Greenbelt Road (Rt. 193) East, following signs towards NASA Goddard Space Flight Center [you will turn
left from the exit ramp onto Greenbelt Road].
If you are approaching from the Outer Loop of the Beltway, on the exit road to the Baltimore-Washington Parkway there is a slip road that leads directly on to Greenbelt Road eastbound, so, in this case, you would not turn "left" on to Greenbelt Road
Traveling East on Greenbelt Rd, continue past the Goddard main entrance (on the left),
Pass one more traffic light, and turn left at the next light onto Good Luck Road.
Look for a gate on the left, within less than ¼ mile.
There will be a guard at the gate to admit visitors after 5:30 PM.
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