An electron-holographic interference microscope that produces a time-sequential interference micrograph at a TV rate is developed. In this system, the electron off-axis hologram detected with a TV camera is transferred to a liquid-crystal spatial light modulator as a video signal. The liquid-crystal spatial light modulator can function as a thin amplitude hologram or a thin phase hologram. Time-sequential interference micrograph is obtained at a TV rate by superimposition of a plane reference wave onto the reconstructed object wave. Experimental results for observing a dynamic domain-wall motion in thin Permalloy film are demonstrated.
© 1993 Optical Society of America
Original Manuscript: June 16, 1993
Published: November 15, 1993
Jun Chen, Tsukasa Hirayama, Guanming Lai, Takayoshi Tanji, Kazuo Ishizuka, and Akira Tonomura, "Real-time electron-holographic interference microscopy with a liquid-crystal spatial light modulator," Opt. Lett. 18, 1887-1889 (1993)