Speckle patterns with atomic and molecular de Broglie waves.
We have developed a nozzle source that delivers a continuous beam of atomic helium or molecular hydrogen having a high degree of transverse coherence and with adequate optical brightness to enable new kinds of experiments. Using this source we have measured single slit diffraction patterns and the first ever speckle-diffraction patterns using atomic and molecular de Broglie waves. Our results suggest fruitful application of coherent matter beams in dynamic scattering and diffractive imaging at short wavelength and with extreme surface sensitivity.
Patton
Forest S
FS
Department of Physics, University of Oregon, Eugene, Oregon 97403-1274, USA.
Deponte
Daniel P
DP
Elliott
Greg S
GS
Kevan
Stephen D
SD