An off-axis holographic recording method for fast-moving objects that has a time resolution of several picoseconds and a large depth of field is suggested. Two different but mutually coherent laser pulses, the original pulse (20 ps) and a stretched pulse (60 ps), are interfered. The short pulse determines the resolution, and the stretched pulse increases the field depth. Interference patterns between the short and the expanded pulses, for λ = 1.064 μm and λ = 0.532 μm, are demonstrated.
© 2000 Optical Society of America
(090.0090) Holography : Holography
(110.6880) Imaging systems : Three-dimensional image acquisition
(120.3180) Instrumentation, measurement, and metrology : Interferometry
(320.7100) Ultrafast optics : Ultrafast measurements
Meir Werdiger, Shalom Eliezer, Benjamin Arad, Yossef Horowitz, Shlomo Maman, and Zohar Henis, "Interference Between Stretched and Original Pulses," Appl. Opt. 39, 2559-2564 (2000)