A system of holographic fingerprint lock,to which the correlative technique isapplied is presented in this paper.The reliability of the system has been improved for adoptingunbleached phase hologram.

• 介绍了利用光学相关技术的全息指纹锁系统,实验中采用了非漂白位相全息图,提高了衍射效率和信噪比,使系统的可靠性得到改善。