White Light Phase-conjugate Lensless Image Projection
Petr Hříbek, M. C. Gower · Journal of Modern Optics · 1989
The lensless projection in white light of images with ∼ 30 µ;m resolution has been demonstrated using phase-conjugate reflections from a self-pumped BaTiO3 crystal which was simultaneously illuminated with red, green and blue laser light. The relative beam incident intensities were crucial in reducing holographic photoerasure and cross-talk effects.