Accurate circuit-level modeling of lasers is essential for the design and simulation of high-speed photonic systems. This paper presents a comprehensive approach to model small-signal dynamics of lasers using Verilog-A. The small-signal model (SSM) captures the linear frequency response around a fixed bias point, enabling analytical extraction of key parameters such as modulation bandwidth and relaxation-oscillation frequency. For a Double Heterostructure laser, we implement both the equivalent circuit model and the transfer-function model, the latter derived through linearization of the rate equations, in Verilog-A. For a Quantum Well laser, only the equivalent circuit model is implemented in Verilog-A. Simulation results show a strong agreement with the experimental data from the literature, validating the accuracy of the proposed approach. This framework facilitates an accurate and scalable tool for the simulation of laser behavior in electronic-photonic integrated circuits (EPICs), supporting future design automation and optimization.