The pulsed Nd:YAG holographic laser-present status and applications

A holographic pulsed Nd:YAG laser system operating at 0.532 micron is described. Transverse-mode and axial-mode selection, doublet pulsing, and requirements for high pulse repetition rate operation up to 30 pulses/sec are discussed. Experimental findings on techniques developed for measuring spatial and temporal coherence in holography applications are presented. Visible output compatible with Ag halide photographic materials, adaptability to holographic interferometry, and compactness are pointed out. System applications include: development of a photopolymeric film for holographic recording at 0.532 micron, multiple wavelength single-shot contour holography, small-scale holographic movies in time motion studies, and rugged holographic cameras for aerodynamics and wind tunnel testing and underwater minisubmarine data acquisition, plus NDT applications.