The device for stabilizing diode laser radiation finds application in maintaining a single-frequency generation mode of the diode laser over a wide temperature range at various radiation intensities, which is necessary for achieving high-quality holographic recording, high-accuracy interferometric measurements, as well as setting exact values of phase-step shifts in digital phase-stepping holographic interferometry. The device is designed for integration into a phase-stepping holographic microscope in a portable holographic recording system, and in an interferometric system featuring a reflection holographic optical element for measuring the full displacement field using diode lasers.