本代码包（ABCDRez）是基于MATLAB语言的激光光束传输（Laser Beam Propagation）及激光谐振腔仿真（Laser Resonator Simulation）代码包。文章使用高斯光束（Gaussian Beam）描述激光，简单介绍了热效应（Thermal Effect）、腔内非线性变换（Nonlinear Frequency Transformation），主要介绍了光束的调节与匹配（Beam Adjusting and Matching）、驻波谐振腔（Standing Stable Resonator）、行波谐振腔（Traveling Stable Resonator）相关内容。用接近数学表达式的自然化语言，使用户更易学习、掌握及灵活运用。

RFID-based navigation system supporting visually impaired users with tactile guidance and real-time audio feedback for independent shopping.

A laser-based intruder alarm circuit that triggers the buzzer and LED when the laser beam is interrupted.