Light-in-Flight Recording by Holographic Microscope and Its Numerical Verification

Abstract

The Feynman variational method is applied to a real functional integral representation of a generator for the velocity correlation functions in stationary homogeneous turbulence. The resulting approximation for the two-point correlation differs from that recently obtained by Lucke using a similar approach. It is pointed out that Lucke's approximation is based on a restricted trial function and does not correctly reproduce second-order perturbation theory in the limit of weak non-linearity. The approximation derived here does not suffer from this defect but is more complicated. Some defects of this general approach are discussed.

Moving Picture Recording and Observation of Visible Femtosecond Light Pulse Propagation

“…Light-in-flight recording by holography (LIF holography) is one powerful technique capable of overcoming these problems. [13][14][15][16][17][18][19][20][21][22] LIF holography can observe the propagation of ultrashort light pulses as form of a spatially and temporally continuous moving picture. The observation of ultrashort light pulses propagating in air and inside optical devices has been reported.…”