A compact digital holographic system based on a multifunctional holographic optical element with improved resolution and field of view

•A novel technique to extend the field of view and enhance the resolution of an off-axis digital holographic system simultaneously, using a multifunctional holographic optical element is presented.•The main advantages of the proposed digital holographic system include a simple optical setup, Compact size, and Cost-effectiveness due to the use of fewer optical elements.•The system's feasibility demonstrates its ability to increase the field of view and enhance resolution at the same time.•The system's easy-to-set-up experimental configuration and impressive results make it a powerful tool for various optical imaging and empirical research applications.